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Hello:
I built myself a car charger a while ago and it all seemed to work fine. A couple of times however my unit has 'died' after a particularly long journey in the car. I have recently discovered that it was actually getting flat enough to turn off and not turn on until charged; even though it was indicating it was charging.
Further experiments have revealed that if the battery in nearly full (eg 84%) and I use my car charger, the percentage of battery full increases over time indicating it is indeed charging.
However; if the battery is quite empty eg 24% - over time the battery charge decreases until the unit turns off, and needs to be attached to the mains to charge it - even thought it still indicates it is charging!
Soehere in the middle of the two battery states ( 84% - 24%), my charger seems uable to charge my XDA for some unknown reason, I suspected it could be due to current drain - a flatter battery may need more current to charge which the charger cannot provide, but the same situation occurrs even if the unit is turned of and therefore taking very little current from the car charger - obviously leaving nearly all the current available to charge the battery.
Any ideas why this should happen? I am completely stumped - I do not wish to buy a charger as my charging system also incorporates a connection to my GPS unit, and no commercially available chargers provide this at a reasonable price.
Any help or suggestions much appreciated.
BTW: The PDA will only charge if at least one of the pins 16,17,or 18 isconnected to ground and at least one of the pins 20,21 or 22 are connected to +5V. Otherwise, though the XDA may say it is charging, it will actually just drain the battery.
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icarusbop,
Have a look at the charger I made for my XDA II, for use with the in-car kit I also made. The schematics are on my web site - follow the link from my signiature below.
This charger works 100%, and the state of the battery has no effect on charging performance. Mind you, it is capable of supplying > 2 Amps which is sufficient to fully charge the battery while watching movies, and the screen brightness turned all the way up. Charging times are the same as using the plug pack supplied with tyhe XDA II, if not a tad quicker.
The only draw back is the heatsink required for the +5 volt regulator. For the smallish one I have chosen (for the car kit - see pic on my site) it is capable of 2 Amps, but with a larger heatsink (see the first attempt pic of this charger) a full 5 Amps is easily achievable over extended use. It all depends on how much juice your set up requires.
Hope this helps.
Recrem...
I have the same issue but I have an original car kit which was working fine. After I upgraded to 2.06.00WWE i noticed that although when plugged into car kit it says charging, it actually discharges. Although I like this version, I'm in the car quite a bit and need the device to charge, and am thinking about rolling back to the latest rom from the club imate site.
It appears to be a software issue more than a hardware issue....
:?
update,
I've discovered that if charged to atleast 90% when plugged into car kit then it charges.
at some level below this (don't know where yet) it discharges.
welcome to the twilight zone
I haven't tested this with my car kit, and haven't noticed any problems when I had SE installed, although my wife said that her device wasn't charging while in the car, and when she got home after a fair drive, her battery was indeed flat!
I rolled back from 2.02 + 2.06 merged SE to my origional ROM of 1.66.00.WWE purely because some problems became more and more evident - like being unable to connect to ActiveSync unless I reset the device numerous times, and spontaneous hard resets. I have all the same software on my device now with the origional ROM and no problems...
We will be moving this week, and it would be a good test for my ROM and charger to see if it charges when below 90%....
Recrem...
microphone
Hi, did you manage to get the mic working on you carkit? I cannot get the mic working when connected with pins 1 and 5. sound output is working however!
Thanks,
Rob Boerman
Did you design and build your own car kit, or did you follow my design from my web site? I am curious if anyone has used the info I have posted there...
Haven't had a chance to try the mic. I only know it will require a good pre-amp to get it working, and I have been too busy to build one yet - perhaps when I have settled down into our new home after this week-end...
Recrem...
let me know
If you find time this weekend let me know
cheers,
Rob Boerman
All
Just to give my two-pennies worth...
I bought a USB cable when purchasing my O2 XDA II from the O2 shop. When using this cable, if the existing charge is below 85% then the device discharges when connected, however, if it is above 85% then it charges quite happily.
Get this.. if I use my USB CRADLE to charge (in the same USB port etc..) then it charges from below 85% without any problems whatsoever!
Is there a possibility that the USB cable and the USB cradle are wired differently? Are we missing a trick here?
My charging issue has deteriorated to the point that it dosn't charge at all in the car kit, it does charge in the pc usb hub and on mains. I down graded to 1.72.00WWE last night and tested it in the car kit this morning and it still discharged, so the software appears to have nothing to do with it.
I think the earlier statement by indecided may yeild results:
"The PDA will only charge if at least one of the pins 16,17,or 18 isconnected to ground and at least one of the pins 20,21 or 22 are connected to +5V. Otherwise, though the XDA may say it is charging, it will actually just drain the battery."
I will pull my gear apart this weekend and test it out. Possibly I've got a bad connection.
davidberrysmith said:
I think the earlier statement by indecided may yeild results:
"The PDA will only charge if at least one of the pins 16,17,or 18 isconnected to ground and at least one of the pins 20,21 or 22 are connected to +5V. Otherwise, though the XDA may say it is charging, it will actually just drain the battery."
Click to expand...
Click to collapse
[Theory] The pins are quite thin, it's hard to think you can push 2+ Amps thru one of them without melting it down (at least the insulation). Maybe this is the problem: if you need a big loading current - like when the battery is below 85% - and you don't have more than one pin pair connected to +/- 5V the phone is not charging, although it may say so.
Solution: connect ALL three of pins 16-18 to GND and ALL three pins 20-22 to +5V.
[/theory]
Solved my problem,...
pin 22 had come away from the circuit board. So I sweated it down and just for good measure sweated down all other connections as well.
Put the phone back together and threw it in the car kit, charge ingreased from 78%.
time to upgrade the os again.
:wink:
david... perseverance does pay off... cool.
Just Mobile 4400 mAh Charger: http://www.expansys-usa.com/d.aspx?i=166301
PPC Tech's 5 Pin Adaptor: http://www.expansys-usa.com/d.aspx?i=145975
Found another: http://www.tang-shop.com/universal-external-battery-powerbox.html DO NOT TRUST THIS SITE!!!
I want to buy a portable charger, anyone have any experience on this brand?
Can you recommend what you are using? Can it charge fast? I read some chargers can't charge fast.
I'm having real problems with portable chargers for the X7510
I have a U2O 13200 mAh charger for my Advent netbook, which also has a USB output for mobile devices at 5V/ 1000mA, but unless the X7510 is on standby, or in screenoff mode, it won't charge fully and takes an age. Likewise for my Maplin minicharger, though that's no real surprise.
The only reliable way to charge mine without the wall charger, is to plug it into my Brodit active holder in the car! For some reason the X7510 seems to draw more current than USB can supply when turned on- not something I noticed with the X7500.
NeilM said:
I'm having real problems with portable chargers for the X7510
I have a U2O 13200 mAh charger for my Advent netbook,
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Click to collapse
This looks nice. Sad that it does not work well with the X7510.
Does it maintain the battery level if you have your X7510 turned on while charging?
NeilM said:
I'm having real problems with portable chargers for the X7510
I have a U2O 13200 mAh charger for my Advent netbook, which also has a USB output for mobile devices at 5V/ 1000mA, but unless the X7510 is on standby, or in screenoff mode, it won't charge fully and takes an age. Likewise for my Maplin minicharger, though that's no real surprise.
The only reliable way to charge mine without the wall charger, is to plug it into my Brodit active holder in the car! For some reason the X7510 seems to draw more current than USB can supply when turned on- not something I noticed with the X7500.
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Click to collapse
I wonder if the USB adapter on this link (post #7) can fix your charging problem: http://forum.xda-developers.com/showthread.php?t=387531&highlight=usb+chargers
or how about using the original active sync chord to charge?
I might go for this charger: http://www.tang-shop.com/universal-external-battery-powerbox.html
Then I will also buy the PPC Tech's 5 pin Adaptor: http://www.expansys-usa.com/d.aspx?i=145975
Thanks for that info- may try the adapter. I'd just seen a similar post on Modaco about the Omnia and Diamond CDMA phones and the fast charge/trickle charge problems. 1st I'd heard about the differing pinouts!
I've tried all the different USB cables- the X7510 is only supplied with a standard USB cable (at least mine was) though my Diamond has the enhanced one. Neither makes any difference. My problem is not really that it won't charge from the power pack, but that if left turned on, the power pack stops charging after a time and I have to press the charge button again to restart it.
USB via the PC just about manages to trickle charge it, unless its set to Disk Drive mode, in which case it is faster; screenoff/standby is faster still.
Keep us updated!
NeilM said:
Keep us updated!
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Click to collapse
Yes, I'll post my update and review. I'll be ordering them today. Hopefully this will work
Hi all, I travel a lot by train and I am always using my flint to watch videos etc.
I have two Emergency chargers and I manage to use both of them happily,
A couple of things i will note down are,
They both power the device and I cant get a decent charge out of either of them but the flint will drain the external battery first. e.g. If I am watching a video I plug in either of the batteries and the flint will deplete those before it starts using its internal battery.
I have noticed a decreased charging time (Faster Charge) when the phone is in storage drive mode. I have no idea how this would help its just something I have observed while using the chargers.
On the odd occasion the flint will attempt to Sync to the batteries!? Again this is complete madness, the only explanation I can think of is the phone assumes its plugged into my PC.
The chargers i use are,
Emergency Charger
I like this one because it takes standard AA batteries which are available everywhere. It provides about 1 hour to 1 hour 30 minuets of constant power on a Standard Duracell AA.
FreeLoader Solar Charger
This one i bought ages ago the solar panels are not up to scratch so i charge it via USB. It provides 1 hour of constant power.
Hope this helps you out; let me know if you need any other info.
Regards
Atomiser
Now I'm interested in this, too. I'm planning on doing a cycle ride from John O'Groats (Nothern tip of the UK) to Land's End (Southern tip) - commonly referred to as a JOGLE.
During my JOGLE I will be using GPSed (www.gpsed.com) to track my progress. This means I'll be using the data connection to upload every five minutes or so, as well as constantly using GPS to log the route.
Needless to say I don't quite expect my battery to last the 6 to 8 hours of cycling I'll be doing every day, so I need to look into some other methods of charging my x7510.
Also, cycling in the UK means that solar chargers are more often than not somewhat less useful than what they'd be in sunny climates, like Turkey.
Atomiser09 said:
Hope this helps you out; let me know if you need any other info.
Regards
Atomiser
Click to expand...
Click to collapse
The information is definitely useful. Thanks.
NanoRuler said:
Needless to say I don't quite expect my battery to last the 6 to 8 hours of cycling I'll be doing every day, so I need to look into some other methods of charging my x7510.
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Click to collapse
I believe NeilM's suggestion of U2O 13,200 mAh battery charger is an excellent option for your need.
When I get my charger, I will try and charge without the PPC Tech Adapter and see if it will fast charge or not. If it won't, I will then use the Adapter and see if it works.
Nanoruler- you have a PM
Don't trust tang-shop.com
DON'T TRUST TANGSHOP.COM
I tried contacting them after placing my order and no response. I already allerted my credit card provider and I will report them to the BBB.
Off to look for another charger.
cktlcmd said:
When I get my charger, I will try and charge without the PPC Tech Adapter and see if it will fast charge or not. If it won't, I will then use the Adapter and see if it works.
Click to expand...
Click to collapse
I decided to skip this proceedure and use the PPC Tech 5 pin adaptor with the 4400 mAh from Just Mobile. I will then ran a movie in continous loop and see how long it will take for the charger to be depleted.
UPDATE:
I ran a movie in loops with BT headset stereo ON for sound. My X7510 was fully charged with green indicator lights and so is the battery charger. The Just Mobile 4400 mAh Charger lasted 5 hours until my X7510 had to rely on its own battery power.
I also connected the PPC 5 pin USB. Basically my X7510 used up the power of the charger first, as I can see the green indicator light on my X7510 for the full 5 hours.
I would definitely recommend this charger to anyone. It is small, about the size of 2 AA batteries stacked side by side. It is well made and the finish feels like it is coated with rubber to give you a none smudge surface probably to avoid sliding off the table. I give it 10/10.
Excellent news!
Do you think the PPCTechs cable makes a difference? Not got around to trying one yet!
NeilM said:
Excellent news!
Do you think the PPCTechs cable makes a difference? Not got around to trying one yet!
Click to expand...
Click to collapse
OK, I'll test it too just for you. I will only use the cable provided by the Just Mobile Charger 4400 mAh, since in my first test I already made use of PPC Tech's 5 pin adaptor. I just finished charging my X7510 from the wall outlet so it has its green indicator light on. I am now waiting for the green indicator light to turn back on after attaching the charger so I can start the test again. Will update you guys with the result.
Update:
10 minutes passed and I don't see the green indicator light. I have my X7510 setup so that if it is charging the screen is turned on with full brightness. It makes me think the 5 pin adaptor does make a difference.
30 minutes passed.... all I saw was the orange indicator light (my device is charging). I think it is safe to assume the PPC Tech's 5 pin adaptor DOES WORK. The charger can't keep up with the demand of my device, with just the screen turned on with full brightness.
I will now attach the 5 pin adaptor and wait....it took 15 min for the green indicator light to show.
CONCLUSION: The PPC Tech's 5 pin adaptor does work for fast charging the X7510.
Thats great! <getting credit card out and calling Expansys!>
For reasons unimportant here, I only have an HTC Diamond charger. When I use that with the X7510, it keeps turning the power on (ie it won't charge in standby), so this may be related to the USB config. I'll try the PPC Techs version!
NeilM said:
it keeps turning the power on (ie it won't charge in standby)
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Click to collapse
Are you sure you programmed your device to shut off when charging?
Because on mine, I have it setup so that the screen is always on and in full brightness when charging or syncing via cable.
cktlcmd said:
Are you sure you programmed your device to shut off when charging?
Because on mine, I have it setup so that the screen is always on and in full brightness when charging or syncing via cable.
Click to expand...
Click to collapse
I need to recheck the config!
Fast-charge adapter
cktlcmd said:
Just Mobile 4400 mAh Charger: http://www.expansys-usa.com/d.aspx?i=166301
PPC Tech's 5 Pin Adaptor: http://www.expansys-usa.com/d.aspx?i=145975
Found another: http://www.tang-shop.com/universal-external-battery-powerbox.html DO NOT TRUST THIS SITE!!!
I want to buy a portable charger, anyone have any experience on this brand?
Can you recommend what you are using? Can it charge fast? I read some chargers can't charge fast.
Click to expand...
Click to collapse
I have experience with a device RELATED to that 5-pin adaptor. It is called "HTC Advantage Lil Sync DUO Pro HandsFree & Charging Adapter" (http://www.ppctechs.com/HTC-Advanta...c-DUO-Pro-HandsFree-Charging-Adapter_1008.htm). I have used these for years with HTC Advantage x7501s. I would have to say they are ALMOST correct when they say:
"In some cases, your HTC Advantage will not charge from an AC/DC adapter or other charging accessory when the battery life is below 30 percent. Our Lil Sync® Duo Pro Adapter will charge your device from a completely drained battery."
I've never had it get that bad, but it can be very slow to charge once it gets below 20%. And using a high-current adapter doesn't help. (A high-voltage one might charge faster. Use at your own risk.) Using the Adapter_1008 with the switch set to F will often get it charging even from a computer's USB port. But not always.
I've only had an Athena 1.5 (Ameo 16GB from T-Mobile UK) for a day, so I have limited info. It does acknowledge it is charging with the switch in either the S or F position, so it is a fair guess that it uses the same pinouts for charging. YMMV.
I have found that the HTC x7501s are just plain weird about recognizing headphones, with or without the adapter. I have built various hypotheses about it, and the machines have disproven every one.
I am thinking about ordering this:
http://www.amazon.com/G2x-T-Mobile-..._24?s=wireless&ie=UTF8&qid=1304350783&sr=1-24
But was wondering if I should spend the money and get a LG issued micro usb and car charger.
Anyone have experience with these chargers?
Hmmm that's alot of stuff for such a cheap price. Makes me wonder the build quality of that stuff. I might stay away from that. Just my opinion though. But to answer your question, I use a micro-usb cable I got from newegg. I also use the car charger I got with my MyTouch Slide a year ago.
First thing I thought was "too good to be true" and in my experience cheap stuff brakes stuff.
Yeah I think the quality of those accessories is probably quite low. If you want a good micro-usb cable I ordered 3 of these about a year ago and still use them today and they work fine on the G2x for data transfer and charging:
http://www.newegg.com/Product/Produ...&cm_re=micro_usb_cable-_-12-189-164-_-Product
I still have my micro usb charger I used for my blackberry curve (2 yrs old). I would assume that would work. I wonder if the old wall charger would work as well.
Those chargers are pretty much worthless. You need a high amp charger. The phone comes with a 1amp or 1000mA charger. If you buy a cheap charger that's 500mA for example you take more time to charge your phone. If the charger is really weak then you might not charge at all or even drop you battery levels while connected and using your gps in your car.
Note these are Blackberry and Motorolla OEM products that will work with your G2X. I use these and they are fine. They are both under $5 each at Amazon.
http://www.amazon.com/BlackBerry-Fo...PN0S/ref=sr_1_1?ie=UTF8&qid=1304613708&sr=8-1
http://www.amazon.com/Motorola-Vehi...Q9CA/ref=sr_1_1?ie=UTF8&qid=1304613757&sr=8-1
http://www.amazon.com/BlackBerry-Cable-Micro-1-0m-Black/dp/B001QATRCA/ref=zg_bs_wireless_10
Cheap doesn't mean bad. All that stuff costs nothing to make anyways.
I buy stuff like that all the time off amazon.com.
I buy stuff like that all the time off amazon.com.
I can tell you you get what you pay for.
I buy stuff like that for coworkers and everthing is still working fine except car chargers breaking because of rough handling of the chargers. Evething else is alive and kicking.
If you decide to get it let me know how the car charger, Charges the phone, and make sure to post pictures because some times picture are diffrent from what is posted on the web.
I personally got this charger from T-Moble (granted, it was $30), 4.8v 1A... and integrated it into my car:
Code:
http://www.t-mobile.com/shop/AddOns/Accessories/AccessoryDetailPopUp.aspx?accessory=f2105fae-0bb1-47f2-b53b-a8acc9e98c56&inCart=True&catCode=-1
I removed the LED since it's hardwired to the car.
Grated, if you want to move the charger from car to car it's not ideal to hard-wire it... but eh.
Be careful what you buy.
I ordered a Micro-USB cable from an Amazon vendor. It was the one in this package:
http://www.amazon.com/gp/product/B004XGBBY6
Package seemed good enough. Good deal. The case was serviceable (I won't use it fulltime, but for what I paid, I wasn't expecting much-- it's good for putting my phone in for when it's in the car, sitting on the dash, so that it doesn't slide around while I get GPS maps). The car charger works pretty well. But the USB cable...
I was experiencing battery drain from my phone while it was plugged into my desktop PC's USB with the aftermarket cable.
The next day I tried it with the one that shipped with my phone from LG and it works just fine.
For reals, has anyone experienced battery drain with an aftermarket cable while it was plugged in?
eatabagel said:
Be careful what you buy.
I ordered a Micro-USB cable from an Amazon vendor. It was the one in this package:
http://www.amazon.com/gp/product/B004XGBBY6
Package seemed good enough. Good deal. The case was serviceable (I won't use it fulltime, but for what I paid, I wasn't expecting much-- it's good for putting my phone in for when it's in the car, sitting on the dash, so that it doesn't slide around while I get GPS maps). The car charger works pretty well. But the USB cable...
I was experiencing battery drain from my phone while it was plugged into my desktop PC's USB with the aftermarket cable.
The next day I tried it with the one that shipped with my phone from LG and it works just fine.
For reals, has anyone experienced battery drain with an aftermarket cable while it was plugged in?
Click to expand...
Click to collapse
Well typically USB doesn't have enough juice to power the phone while you are using it. It might in some cases but with WiFi, the screen, GPS, or whatever... you probably won't be charging the battery much if at all, and in fact might be losing power.
The same with USB chargers. The better chargers provide more power where most only provide the standard 5v (just like a desktop) so with heavy usage (GPS, screen, bluetooth) you might not gain anything.
I'm not sure about PC's because computers follow the standard of 5v and I don't think they will send more over the cable. A bad cable will have more resistance and probably not do as good of a job but overall should work.
The answer is any microUSB cable will work because it is a standard. Chargers (home and car) should provide more power to give it a faster charge.
Some Chargers are able to do "fast-charges" which I know the G2x can handle. I have a Microsoft Zune charger and it devastates my battery charge times. I'll be full in like 30min.
Typically batteries like a slow progressive charges though, which seem to last the longest. Oddly enough, I get the best battery life by charging my phone via my USB port on my Cable Box (haha).
As long as the charger's output is 5V then you're good. The higher the milliamp output on the charger the faster yourphone will charge.
Sent from my LG-P999 using XDA App
player911 said:
Well typically USB doesn't have enough juice to power the phone while you are using it. It might in some cases but with WiFi, the screen, GPS, or whatever... you probably won't be charging the battery much if at all, and in fact might be losing power.
Click to expand...
Click to collapse
My phone charges just fine when I'm using while connected to my computer via USB.
It's the amperage that counts when it comes to filling up your battery. I've used .5, .6, .8 and 1 amp wall adapter and car chargers. The 1 amp charges much faster but, if I remember my USB spec, that's all that was allowed until Apple came along PCs are typically restricted to 500 milliamps (.5 amp) so it's a little slower but still enough to charge it., even under use. I suppose if you have GPS seeking satellites and the display turned up all the way you may draw more than 500 milliamps but I'd be surprised.
EDIT: if you're really interested in this stuff, check http://batteryuniversity.com/ and https://secure.wikimedia.org/wikipedia/en/wiki/Universal_Serial_Bus#Power
This weekend I went on a trip and decided to try out using my Skyrocket as a GPS navigator using Google Navigation. I had my phone mounted and plugged in the whole time for about a 2 hour trip. The screen was on the whole time usually at high brightness (it would dim every once in a while.) When I removed my phone from the mount I noticed the power was down to the low 60's, which struck me as slightly odd since it was plugged into the charger the whole time. The next day I tried to use it as a GPS system again, but even as it was plugged in, this time I literally saw the battery gauge draining. When I turned off navigation and the screen the phone would finally start charging.
Is this a common thing or is there an issue with my phone or possibly my charger? Does doing all those things really drain the battery faster than it can charge it? One last note is that I was not in an LTE area during this, or at least not the whole time (I only noticed it was LTE at one time during the trip.) When I saw my battery draining in front of me I definitely was not in an LTE area.
Might be your charger. I'm having no problems using it as my primary driving, hiking and general outdoor GPS unit. When on car charger, it's charging faster then it drains.
I believe my charger is an old Motorola car charger that came with my wife's old dumbphone. It's actually not even a Micro-USB charger, but rather a Mini-USB with an adapter.
This may be a dumb question, but the actual charging port shouldn't be the issue right? I'm assuming those are always the same standard.
Check the car charger amperage output. I have an old car charger to USB that only puts out 750mA and another thats puts out 1A. Anything less than 1A with the navigation running (which means the screen and GPS stay on, of course), and it'll still drain the battery (and even at 1A it may still drain).
I've been putting off getting a powerful enough car charger myself. You'll need one that puts out 1-2A I would think. Most of the common ones off the shelf are 1A or less, and I've heard that some chargers reported max output is not as good as reported.
Sent from my SAMSUNG-SGH-I727
jslanger said:
Check the car charger amperage output. I have an old car charger to USB that only puts out 750mA and another thats puts out 1A. Anything less than 1A with the navigation running (which means the screen and GPS stay on, of course), and it'll still drain the battery (and even at 1A it may still drain).
I've been putting off getting a powerful enough car charger myself. You'll need one that puts out 1-2A I would think. Most of the common ones off the shelf are 1A or less, and I've heard that some chargers reported max output is not as good as reported.
Sent from my SAMSUNG-SGH-I727
Click to expand...
Click to collapse
i second this...my phone won't even charge on some wall chargers, unless 700mAh or higher. let alone do any battery heavy functions like GPS. get something with at least 1a output
I'll try swapping the chargers. I have an overpriced AT&T one that I got for free that is collecting dust.
If the charger has 1A output then it should be OK
I'm having the same problem with my Skyrocket and cheapy charger that I bought at Fry's. Use the navigation with screen on and my battery is less than when I plugged it in.
Going to buy this combo 2A and 1A charger.
http://www.amazon.com/GTMax-2-Port-..._1_5?s=wireless&ie=UTF8&qid=1329796381&sr=1-5
Its the amount of mah your charger is putting out. Not the phone. The charger is not supplying enough power
Sent from my SAMSUNG-SGH-I727 using Tapatalk
CZ Eddie said:
I'm having the same problem with my Skyrocket and cheapy charger that I bought at Fry's. Use the navigation with screen on and my battery is less than when I plugged it in.
Going to buy this combo 2A and 1A charger.
http://www.amazon.com/GTMax-2-Port-..._1_5?s=wireless&ie=UTF8&qid=1329796381&sr=1-5
Click to expand...
Click to collapse
When I was looking for a more powerful option, I saw that one on Amazon as well. My only hesitation at buying it was why it was so much cheaper than all comparable options at local stores, or even online...I've heard that the cheapie chargers may not actually output what they say...though for $4 plus shipping, I guess it's not much of a gamble. Let us know how it performs!
P.S.-Pulled up the reviews...not too many positive ones (though 1 or 2 were good): http://www.amazon.com/GTMax-2-Port-...iewpoints=1&sortBy=bySubmissionDateDescending
Its actually more than just the charger output that is a problem. If the center two pins on the USB connection aren't shorted, the phone will treat it as a USB connection to a computer, not an AC connection from the wall, and only draw a max 500mah. I had bought a 1amp and 2 amp charger for my car and would get the same results as the 500. I started to think it was my car limiting my output!
But I then found an article detailing this problem that I've since lost the link to, but the method worked. Pop open the charger and solder the 2 middle connectors together and all is good.
I don't know why the charger manufacturers don't know this... Or maybe this phone is doing something new? Maybe someone makes a USB-> micro USB with the center pair shorted in cable?
Sent from my SAMSUNG-SGH-I727 using Tapatalk
Just Google "Solder USB Car Charger" and you'll find plenty of tutorials about how to do that. Personally I'd rather just buy one that out of the box works.
Tried out my AT&T charger (which can be found here) and it worked perfectly. Set up the GPS and everything and now it will charge even while doing all that stuff. Thanks for the help
I have the same issue with my SkyRocket. LTE makes no difference. If I'm using Google Navigation or Waze and the Screen is on my charger/phone can't keep up with the battery drain. If I turn the screen off and keep the GPS app running the battery either doesn't drain or doesn't drain as fast.
I've checked my car charger and it's one of those dual usb ones, with a 1 amp port and a 2.1 amp port. It has no indication of which port is which, so I don't know what port I'm using at any particular time. I've tried both and the effects are the same.
Regardless, when the phone is plugged in to that charger the phone reports that it's an AC charger. Supposedly that means I'm getting at least 1 amp, right? So why is 1 amp not enough?
I don't like the car charger you guys suggested because it has the curly cord. I'd rather use a car charger that doesn't come with a cable so I can plug in my own usb cable.
Any suggestions?
http://www.ebay.com/itm/5V-2000mA-U...pt=US_Tablet_Accessories&hash=item5d3 2a6631c
Will it be ok to buy it or will it harm the phone and I should just stick to 1A charger?
It will work without any issues. I am using Nokia charger that is 1,5A without any issues.
Just want to make sure there's no chance its gonna fry my phone phone somehow, 2A is still 25% higher then 1.5A .
I bought a 2.1A dual charger from Fry's last night.
Freakin thing is even worse at charging than my .7A single charger is.
I'm not buying anymore chargers unless they have written reviews from people stating they work properly.
CZ Eddie said:
I bought a 2.1A dual charger from Fry's last night.
Freakin thing is even worse at charging than my .7A single charger is.
I'm not buying anymore chargers unless they have written reviews from people stating they work properly.
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If you run into a good charger pm me. If I'll buy this charger and it works out to be good I'll let you know.
Having a power supply greater than what u need is actually a good thing, it'll provide a more stable. current, assuming its of decent quality. Your phone will only draw as much power as it needs, in this case 1A.
I will say that cheap DC power adapters appear to wildly vary in actual current delivered. I am a little skeptical of a charger sold from Hong Kong.
And, in my experience, you WILL need a full 1A of power when doing something like GPS navigation since my 750mA (well, thats what it says on it) charger can't keep up with that level of power draw.
Anyone who is good with electronics know a good way to test the output of these chargers directly?
multimeter
icenight89 said:
multimeter
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Well yes, but which output pins, etc. But thanks for the constructive answer
I don't own a multimeter, but my dad always had one (that was likely older than I am) and it always seemed to come in handy. Wonder if Radio Shack still has them or if its all just cell phones and toys now...
jslanger said:
Well yes, but which output pins, etc. But thanks for the constructive answer
I don't own a multimeter, but my dad always had one (that was likely older than I am) and it always seemed to come in handy. Wonder if Radio Shack still has them or if its all just cell phones and toys now...
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Same is with my dad, try this http://pinoutsguide.com/PortableDevices/micro_usb_pinout.shtml I guess you gotta measure the red and black.
2 informative threads about this subject:
http://forum.xda-developers.com/showthread.php?t=844284 - This method might prove useful to your 2.1A new charger.
http://forum.xda-developers.com/archive/index.php/t-787906.html
kishke said:
If you run into a good charger pm me. If I'll buy this charger and it works out to be good I'll let you know.
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This thread links to a supposedly good charger.
It also discusses that the USB cable itself can be the difference between a .5A and 1.0A charge.
http://forums.androidcentral.com/ga...8605-car-adapter-charges-while-using-gps.html
I bought a 120V AC/DC converter for my car for charging my laptop and it also has a USB plug. Even it wasn't able to charge my phone up while I was using GPS.
So I'm going to try a stock Samsung micro-USB cable instead of the Radio Shack collapsing micro-USB cable I've been using, to see if that helps.
Just ordered the charger, 3$ is not a big hit, I'll report back in 2-3 weeks after I receive it and let you know how well it's working.
kishke said:
Just ordered the charger, 3$ is not a big hit, I'll report back in 2-3 weeks after I receive it and let you know how well it's working.
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I hope you don't expect too much from a $3 charger. Remember the old saying people, you get what you pay for!
Sent from my SGH-T989 using Tapatalk
kishke said:
Just ordered the charger, 3$ is not a big hit, I'll report back in 2-3 weeks after I receive it and let you know how well it's working.
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Just have to say that I love your screen name Kishke. Only my grandmother uses that word still
Sent from my SAMSUNG-SGH-I727
So I just got my charger today, had 1 drive with it so far with gps on and the phone actually got charged without exploding ^^
This is the charger for the lazy people http://www.ebay.com/itm/400281723676?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
It come without a cable and from first impression it looks pretty good.
Thanks, I just bought one. Hope it doesn't take ~30 days to get to me like it did you.
A little update:
Yesterday I had 2 drives with the phone the charger connected and the gps on, first was 50 minutes second was 35, both times everything worked great and the phone got charged.
Today as I was driving back home after the phone on with the gps and the charger for 10 minutes I received a "battery temperature too hot, stopping charging".
I can relate a few factors to this, first when i entered the car it was scolding hot, second probably the car mount was also hot and 3rd my case is really cheap and chocking.
I downloaded a battery temperature widget and I'll check the battery and the charger in a few different situations, with and without the case when the car is hot.
Edit: I checked the current the phone takes while being connected to the wall and the cat charger and they are both approx 860mA so the issue comes to the phone itself.
Overheating
When I had my Nexus One I had overheating problems.
It happened when doing all of the following together:
- connected to car charger
- gps
- navigation
- screen on full brightness
- on dashboard on very hot day
The phone was never the same after the first time it overheated (unstable). Eventually got HTC to replace the motherboard to resolve the issues.
My point being that when you do all this stuff at the same time you have a lot of current flowing through a pretty tight space with very little cooling.
I am paranoid about my i727r getting fried this way as well ... so I am constantly checking to see if it is getting too hot when I am navigating.
I'm guessing at our hot summer I'll have to cut back on the charger or the gps.
Still now before it's really hot its a good time to experiment with everything icluding pointing the air conditioner on the phone ^^
Edit: I checked the current the phone takes while being connected to the wall and the cat charger and they are both approx 860mA so the issue comes to the phone itself.
kishke said:
I'm guessing at our hot summer I'll have to cut back on the charger or the gps.
Still now before it's really hot its a good time to experiment with everything icluding pointing the air conditioner on the phone ^^
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One solution could be to buy a genuine Samsung battery charger with a spare battery and charge only the spare one while driving
Look for Samsung-Battery-Charger-Stand-Galaxy
Mine arrived today, quality seems to be ok but haven't tested it yet.
kishke said:
Edit: I checked the current the phone takes while being connected to the wall and the cat charger and they are both approx 860mA so the issue comes to the phone itself.
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Could you tell me how to check the current the phone takes without root access? My GS2 doesn't show current in widgets like CurrentWidget.