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I like a lot of people use my phone very heavily yet I don't have an opportunity to plug my phone into an AC charger until I return home. A great remedy to the problem is this handly little AA charger.
http://www.igo.com/accessories/powerxtender-charger/invt/ps002640004/
The reason I like it so much is because cheap portable battery packs usually pack under 1000mah of power. Thats not even enough to give you 1 full charge. And the more expensive 2000mah+ packs are often on the large side and well... expensive lol. On the other hand this little bugger is cheap and small enough to sit in my pocket without being a bother. What I find is the best part of it is the fact that you can choose what kind of AA batteries you put into it. I opted for Energizer rechargeable which are rated at 2450mah EACH for a total of 4900mah of power. Thats the equivalent of 3 G2x batteries. Keep 2 more batteries in your backpack/desk/purse thats an additional 4900mah. If that can't get you through the day you have more than just phone issues
Originally bought it for my Vibrant but quickly found it was awkward because the the product doesnt come with a cable adapter. This meant it was hanging and putting much strain on the usb port of the phone. Out of fear of breaking it I stopped using it. However since the G2x charges from the bottom there is absolutely no problem espcially seeing as I bought a 20cm micro usb extension cable so that the charger can sit in my lap or on a table while using the phone.
Just thought I'd share this since we can't get legit replacement batteries yet and even when they do become available they will cost a pretty penny. Got mine from Staples but they can be had on amazon also along with the usb extension able and rechargeable batteries.
This one works very well, too:
Well I'm a new member, so not allowed to post outside link. Therefore goto
Amazon
Duracell Instant USB Charger with Lithium ion battery
Pick the very first one
You don't need to by batteries or an extra charger. You can recharge it via your G2x power supply or any computer.
This was my favorite (coming from g1)
Too bad theres no new version for the micro usb's now..
http://www.amazon.com/Motorola-9878...?s=electronics&ie=UTF8&qid=1304363010&sr=1-16
This can be added on, though it wouldn't be very convenient since its a slide in/out connector
http://www.amazon.com/Motorola-Mini-USB-Micro-USB-Charger-Adapter/dp/B0018L4GOQ/ref=pd_sim_cps_1
hire4blood said:
This one works very well, too:
Well I'm a new member, so not allowed to post outside link. Therefore goto
Amazon
Duracell Instant USB Charger with Lithium ion battery
Pick the very first one
You don't need to by batteries or an extra charger. You can recharge it via your G2x power supply or any computer.
Click to expand...
Click to collapse
I almost bought one of those until I saw how low the capacity on it is. Looks tiny though which is nice.
J&R has Veho 5Ah external battery for $35 and I have 2 of them.
Just use regular microUSB cable to charge the phone and leave the original cable secure.
I'm thinking about getting the i-up 13,200mAh pack.
regP said:
I almost bought one of those until I saw how low the capacity on it is. Looks tiny though which is nice.
Click to expand...
Click to collapse
They have a bigger version for 32$ as well. The 22$ version gives me a full charge from around 30%.
Just received my Pebble XT 5000mah pack. Won't be able to put it through its paces till next tuesday. Upon first impression, i think im in love with this thing already. its small enough to sit in pocket without having much presence. extremely lightweight. and the cord is long enough to be able to have the charger in your pocket and phone in hand (thank you lg for putting the usb port at the bottom). All info I have read indicated that it really does output 5000mAh of power so even a heavy user such as myself will have no problem getting through a full day of use.
Just wondering how everyone's batterys are working out for them?
Also how many full charges did you get?
Also any likes or dislikes of product they decided to buy?
Sent from my LG-P999 using XDA Premium App
Just wanting a update???
Sent from my LG-P999 using XDA Premium App
That looks like something that might be good out camping or something where you needed to charge your phone without touching it. But I would figure actually picking it up and putting that much weight on he usb port a very bad idea... This should come with a extension cord to charge while using, even texting or something would be pretty difficult to hold both...
motorola p793
Check this site for power packs, all kinds 5000mah for around $20
http://www.tvc-mall.com/details/660...r-Cell-Phone-Tablet-PC-PSP-etc-IPHONE-4-7095/
Micro usb 1900mah
http://www.tvc-mall.com/details/Por...AZR2-V8-HTC-BlackBerry-and-etc-Black-MCH-615/
ImaxPower IMP500 (5000mAh) External Battery
I've used an IMP500 Rechargeable (5000mAh) external battery pack for a few years with great sucess. They make them as large as 11000mAh (or more?) and even have solar-rechargeable options. Just take a look at New Trent or other similar products on Amazon or eBay.
The best part about the IMP series is that they have multiple adapters for iPhones, mini/micro USB, PSP, DS, and other devices so you can charge your phone and anything else you might be carrying around with you.
Link to NewTrent for info on models
I'd recommend buying elsewhere because you can find them for 30-50%+ off.
Hi All,
Couldn't find this posted before so wondered if anyone could recommend a USB Battery Charger to change the batt from my Desire without the phone. I have a spare and going on travels want to be able to just leave the battery charging on its own and not use the phone all the time.
Ive seen quite a few on ebay and some look really dodgy with adjustable charging pins etc whereas others are ridiculously cheap and i can only imagine will ruin my battery.
Key points are it should be small, light, USB powered and whilst I accept it will not charge as good/full as through the phone - not to knacker my batt completely.
Cheers for any help.
Bridgstfer
I have been looking for the same thing and found a battery pack on Amazon for £25, manufactured by New Trent it has a 5000mAh battery in it and can recharge your phone at least 3 times.
I ordered the dual output version on Sunday, so hope to get it and try it out in a couple of days.
Using a Veho pebble here, works great
would be nice for a faster charge though, it seems a bit slow for 750ma
mps711 said:
I have been looking for the same thing and found a battery pack on Amazon for £25, manufactured by New Trent it has a 5000mAh battery in it and can recharge your phone at least 3 times.
I ordered the dual output version on Sunday, so hope to get it and try it out in a couple of days.
Click to expand...
Click to collapse
I've got one of those. It's really good, one of the outputs is 1A so charges up really quickly.
My only criticism is the on/off button is easily pressed by accident, but that's really looking for problems. Oh and it would have been nice if the usb socket to charge it was a microusb one so I could use the same lead as the phone.
It's a good battery pack.
It certainly sounds like it is going to be good.
With regards to charging the pack itself, does it come with a USB to mini USB charging lead?
mps711 said:
It certainly sounds like it is going to be good.
With regards to charging the pack itself, does it come with a USB to mini USB charging lead?
Click to expand...
Click to collapse
Mine didnt come with any charger or leads but as I have a box full of that stuff it wasn't an issue.
Edit: I'm an idiot. It came with a lead with a selection of interchangable tips to fit most phones.
I forgot as this is now also living at the bottom of my tangled box of leads.
Thanks for the replies guys.
Yeah i actually had one of those external battery packs (5000mah) but found that you could not even get 2 full charges out of it and therefore not worth the extra weight/charge time.
Basically its misleading because the voltage of the battery is different to you phone battery and it need to be upscaled or something - there are quite alot of posts about it. Let us know if you manage to get 3 charges though - that would be good.
But anyone used external chargers for the a spare phone battery?
I tried plugging in my mini usb cables I have used for other phones but it does not fit. It looks like the opening on the MT is larger then the standard. Is anyone else noticing this?
I've used all my other ones fine. I use a blackberry mini usb to charge while I sleep, another blackberry cable to hook to my laptop at work, and the one that came with it at my home desktop. No problems for me.
All my chargers work fine as well.
It uses microusb, not mini. The standard ones work fine.
Sent from my myTouch_4G_Slide using XDA App
It's not the volts, it's the amps....
Just as an FYI, one thing to watch out for even though the USB plug is standard is that the power output can be different on different chargers. 5v is the USB standard, but the amperage can vary. I think the Max is 1A for the USB (2?) spec, but I'm not sure if or what the Min amperage is. The V/A output should be listed on the charger.
The plug that comes with the mt4gs is 5V-1A. When I've tried charging phones (e.g. Blackberry) in the past with a 5V-.2A charger, it has worked extremely poorly (half charge after 12+hours). I would expect similar results with the mt4gs.
websculling is right. Additionally, using the wrong amperage to charge significantly decreases the number of charges you get out of your battery before it fails. Stick to chargers that have the amperage the battery was optimally designed to accommodate.
_atlien_ said:
websculling is right. Additionally, using the wrong amperage to charge significantly decreases the number of charges you get out of your battery before it fails. Stick to chargers that have the amperage the battery was optimally designed to accommodate.
Click to expand...
Click to collapse
So amperage is what matters with USB charger compatibility and not the voltage?
My wife's old feature phone came with a micro-usb charger so I'm trying to figure out if it will damage by MT4GS or the MY3GS I handed down to my wife.
fallenturtle said:
So amperage is what matters with USB charger compatibility and not the voltage?
My wife's old feature phone came with a micro-usb charger so I'm trying to figure out if it will damage by MT4GS or the MY3GS I handed down to my wife.
Click to expand...
Click to collapse
Both are important.
Too high of a voltage and you'll burn up the battery or damage the charging circuit.
Too low of an amperage (blackberry chargers) and you'll wear out the battery much more quickly. Trickling in power like that to these kind of batteries that weren't designed to handle it that way 'ages' the cells and reduces their already less then impressive lifespan.
Battery tech is better then it was even a few short years ago, but these kind of batteries in this small of a package are barely efficient enough to be useful. A few more years and things will be a lot better, but for the time being you should really try to care for your battery as best as you can and not abuse it.
I'll post the link here to the XDA battery writeup I linked to in both the anker and mugen threads later on when I get back to a real computer and am not using a phone app to browse the forums.
(Because babysitting a door you just painted and can't close right away is such an engaging task...lol)
Sent from my Bulletproof_Doubleshot using xda premium
Blue6IX said:
Both are important.
Too high of a voltage and you'll burn up the battery or damage the charging circuit.
Too low of an amperage (blackberry chargers) and you'll wear out the battery much more quickly. Trickling in power like that to these kind of batteries that weren't designed to handle it that way 'ages' the cells and reduces their already less then impressive lifespan.
Battery tech is better then it was even a few short years ago, but these kind of batteries in this small of a package are barely efficient enough to be useful. A few more years and things will be a lot better, but for the time being you should really try to care for your battery as best as you can and not abuse it.
I'll post the link here to the XDA battery writeup I linked to in both the anker and mugen threads later on when I get back to a real computer and am not using a phone app to browse the forums.
(Because babysitting a door you just painted and can't close right away is such an engaging task...lol)
Sent from my Bulletproof_Doubleshot using xda premium
Click to expand...
Click to collapse
This particular adapter is 5.1V and .7A.
fallenturtle said:
This particular adapter is 5.1V and .7A.
Click to expand...
Click to collapse
That's not too far out of spec, but I would rather let my battery die then use it, personally. Finding an AC adapter that is in spec is very easy and very cheap.
Something to note here is the doubleshot does not have a hardware regulated charging circuit inside the phone - this is the reason why it was rough with the early unofficial ClockworkMod recoveries and the source of their charging issues.
Knowing there is no hardware failsafe, it makes it that much easier to do permanent damage to the battery, device or both.
Do what you think is best, but just want you to have as much information as possible to base your decision on.
Blue6IX said:
That's not too far out of spec, but I would rather let my battery die then use it, personally. Finding an AC adapter that is in spec is very easy and very cheap.
Something to note here is the doubleshot does not have a hardware regulated charging circuit inside the phone - this is the reason why it was rough with the early unofficial ClockworkMod recoveries and the source of their charging issues.
Knowing there is no hardware failsafe, it makes it that much easier to do permanent damage to the battery, device or both.
Do what you think is best, but just want you to have as much information as possible to base your decision on.
Click to expand...
Click to collapse
That's good info to know. Do you know if Espresso is also lacking that hardware failsafe?
fallenturtle said:
That's good info to know. Do you know if Espresso is also lacking that hardware failsafe?
Click to expand...
Click to collapse
Unsure - this is my first smart-phone, so I don't have the history of knowledge a lot of people don't realize they possess and am playing catch-up as quickly as I can.
I know a lot about this device, and the Nook Color, but anything else is pretty foreign to me at this time.
Blue6IX said:
Unsure - this is my first smart-phone, so I don't have the history of knowledge a lot of people don't realize they possess and am playing catch-up as quickly as I can.
I know a lot about this device, and the Nook Color, but anything else is pretty foreign to me at this time.
Click to expand...
Click to collapse
Since you're new to Android, download and read this guide.
Sent via smoke signal.
blackknightavalon said:
Since you're new to Android, download and read this guide.
Sent via smoke signal.
Click to expand...
Click to collapse
That looks like a pretty helpful download. I don't have any social media accounts anywhere, so sometime later on i'll subscribe to get the link.
Thanks, I really appreciate you sharing that!
http://forum.xda-developers.com/showthread.php?t=669497
XDA write up on these types of batteries - the link I said i'd drop in this thread before.
Sorry, been busy around here, trying to find time to clean up all my loose ends.
Being the DIY kind of guy, I'm wondering if anyone tried to disassemble the Touchstone charger and post a schematic so that anyone with some electronics skills can make their own, in whatever shape or colour they desire.
Just wondering.
Ifixit has a pre touchstone tear down. They are similar, maybe you can request that site complete one on the TouchPad version.
I just looked mine over, there are no exposed screws. Any screws must be under the rubber foot, or the back may snap off. I'm not risking breaking mine. But, for $40 you could find out yourself
Sent from my Galaxy S II (i777)
All you need is a USB source with an output of 5.3V and 2A. But on that note, doesn't the higher level of amps charging the TP batteries more quickly kill the overall battery life of the batteries?
I use other brands of usb chargers unless i'm in a hurry, because the TP official charger will get it all juiced up in no time. Lower amperage, slower charging, longer overall battery life (i presume.)
teddyspaghetti said:
All you need is a USB source with an output of 5.3V and 2A. But on that note, doesn't the higher level of amps charging the TP batteries more quickly kill the overall battery life of the batteries?
I use other brands of usb chargers unless i'm in a hurry, because the TP official charger will get it all juiced up in no time. Lower amperage, slower charging, longer overall battery life (i presume.)
Click to expand...
Click to collapse
Not sure about the truth of that, because I think it has something to do with the actual cycles. I'm not 100% sure so if I'm wrong someone correct me.
The OP was referring to the wireless induction charging in the Touchstone, not just a generic USB charger.
As to the whole more amps = lower health battery debate, I won't touch that. I've seen "proof" both ways. What I know is the OEM charger is 5.3v at 2 amps. I am going to trust HP that is the proper specs. Plus, any "smart" device doesn't pull more amperage than it needs, so its software controlled.
Sent from my Galaxy S II (i777)
Indeed, I am not talking about the wired charger, I am talking about the wireless Touchstone charger.
50 USD wouldn't be a problem for a Touchstone. However HP hasn't brought Touchpad's or accessories in Romania and offer no support for them, and I don't want to wait for 2 weeks for delivery.
And I also am the DIY kind of guy, and in the near future I'll be designing and building a custom desk which I would like to include a nice built-in stand for the Touchpad.
teddyspaghetti said:
All you need is a USB source with an output of 5.3V and 2A. But on that note, doesn't the higher level of amps charging the TP batteries more quickly kill the overall battery life of the batteries?
I use other brands of usb chargers unless i'm in a hurry, because the TP official charger will get it all juiced up in no time. Lower amperage, slower charging, longer overall battery life (i presume.)
Click to expand...
Click to collapse
Any old 5.3v/2A source will not give 2A to the TP. The device relies on switch signaling on the data lines which aknowledges that it is connected to the correct (ie HP barrel) charger and this allows the full charge rate to be applied.
In all other cases the charger only gives a low level trickle charge with the resulting longer charge times.
LiPo batteries and their charging profiles are very efficient and are perfectly capable of handling higher charging currents without detriment.
If they become very drained these higher currents are required to start the charge cycle whereas lower power chargers would not.
This thread is not about charge current or cycles, not sure why you haven't gotten a real answer yet, so I decided to register to give you one.
Even if you had the schematics and a source for the components, winding the coil for the inductive charging would be your biggest issue. At best it probably wouldn't be efficient enough to be worth it and it would likely take a long time to charge if it did at all. All the parts and work it would take for a kind of crappy result wouldn't be as good as just spending the $50 or whatever.
That's the negative side though, so don't get me wrong. If I could I'd totally be building one myself as well. I wish more people were into DIY stuff like this. I also really like the idea of building it into a desk and you may be able to do that with an official Touchstone charger.
FjarrKontroll said:
This thread is not about charge current or cycles, not sure why you haven't gotten a real answer yet, so I decided to register to give you one.
Even if you had the schematics and a source for the components, winding the coil for the inductive charging would be your biggest issue. At best it probably wouldn't be efficient enough to be worth it and it would likely take a long time to charge if it did at all. All the parts and work it would take for a kind of crappy result wouldn't be as good as just spending the $50 or whatever.
That's the negative side though, so don't get me wrong. If I could I'd totally be building one myself as well. I wish more people were into DIY stuff like this. I also really like the idea of building it into a desk and you may be able to do that with an official Touchstone charger.
Click to expand...
Click to collapse
While the OP was not about charge current or cycles I do sincerely hope that you understand the value of correcting misinformation and wrong assertions about any aspect that may raise it's related head in these threads.
To jump into a thread and the forum with such a comment is perhaps an indication of the levels of accepable politeness at large in the world today.
But I for one don't take too kindly to it.
But then us 'older' members may be a little too sensitive.
Any impropriety and the mods will deal with it!
Dear XDA, i really need your help,
I am planning to make this (see thubnail)
i want to make a custom case for my htc one s. (I know it will be a little bigger but that's ok)
I want to charge my phone using a usb cable or a micro usb cable, and at the same time doing OTG. I don't know what resistor i will use yet (tips?)
Also add an extra battery. It is an old phone battery. So if i want to charge from the battery i need to stop the solar cell and guide the electricity through the 5v regulator to charge. What ya think?
I am new to modding so please comment cause i need a lot of help to make this one succeed!
Greetings, pro-one1000
sent from htc one s ville
Don't mean to be negative but I see a couple issues right of the bat. First, where are you going to get a 5 volt charger? I would guess most dc chargers are going to be 12, 24, or 36 volts. I don't think they'll run on significantly less. The solar panel is only going to output about one half of one watt. Assuming no friction loss or inefficiencies that would hardly slow your phone's discharge.
If you want to power the phone and hub I would suggest a small sealed lead acid battery. They're available in 12 volts in many sizes. Easily enough power to keep phone totally charged. Will work with cigarette lighter car chargers so you won't need to customize that part. Depending on the size it'll last a week to a month non-stop. Unfortunately, it probably won't fit in your pocket but if you carry a book bag or briefcase you could hide it there... I use a battery like this at work when I'm using a lot of phone battery and moving around too much to plug in.
Good luck with which ever route you choose!
Sent from my HTC One S using xda app-developers app
thanks
lampel said:
Don't mean to be negative but I see a couple issues right of the bat. First, where are you going to get a 5 volt charger? I would guess most dc chargers are going to be 12, 24, or 36 volts. I don't think they'll run on significantly less. The solar panel is only going to output about one half of one watt. Assuming no friction loss or inefficiencies that would hardly slow your phone's discharge.
If you want to power the phone and hub I would suggest a small sealed lead acid battery. They're available in 12 volts in many sizes. Easily enough power to keep phone totally charged. Will work with cigarette lighter car chargers so you won't need to customize that part. Depending on the size it'll last a week to a month non-stop. Unfortunately, it probably won't fit in your pocket but if you carry a book bag or briefcase you could hide it there... I use a battery like this at work when I'm using a lot of phone battery and moving around too much to plug in.
Good luck with which ever route you choose!
Sent from my HTC One S using xda app-developers app
Click to expand...
Click to collapse
Thanks for your reply!
First about the charger, i will use my 5v 1amp charger (micro usb) or an usb male to male usb cable from my pc to charge. So i'll be able to get a charger.
You're i think right about the solar panel, i need to find a better one indeed, trying to get one cheap on ebay! If i try to search for a "smal sealed lead acid battery" i get 40 dollar + big cases of batteries, could you please give a example in the form of an ebay-link?
Anyway thanks a lot and when i have ordered the parts i will try to upload the stuff!
Greetings
I'm assuming the 5v charger you're talking about it a car charger; which means it would have an input voltage of 12 - 14 and won't run on 3.7 (and even if it could run on the lower voltage the amperage would go up dramatically draining the usable power in the battery in minutes. And I wouldn't connect anything to a USB port for two reasons: first, if you connect two batteries in parallel (red to red and black to black) and they're not identical one will usually drain the other as they try and equalize (unless you isolate them from each other). Second, I don't think most USB ports (USB 3.0 i believe has provisions to receive power) are designed to receive power on a computer and your schematic doesn't include anything to prevent back feeding power to the computer.
There are many solar chargers I've seen that would give you the output you need - I've seen them designed to trickle charge RVs, boats, cars, and motorcycles - but I think they would be way to larger for what your looking for.
And I guess I should clarify what I meant by small... Was a bad choice of words for a cell phone forum, I guess. I meant small relative to other lead acid batteries; i.e. car or boat batteries. This is similiar to what I use:
http://www.ebay.com/itm/12VOLT-5AMP...US_Rechargeable_Batteries&hash=item589ef11aed
Attached is a pic of my batteries and the adapter that gives me a cigarette lighter type receptacle. And I use a spare motorcycle float charger to keep them charged. And because they're 12 volt batteries they'll power and accessory that is designed to run in a car.
I guess I should probably have asked what is your ultimate goal? And do you carry anything where you could stash the battery?
giesse1996 said:
Thanks for your reply!
First about the charger, i will use my 5v 1amp charger (micro usb) or an usb male to male usb cable from my pc to charge. So i'll be able to get a charger.
You're i think right about the solar panel, i need to find a better one indeed, trying to get one cheap on ebay! If i try to search for a "smal sealed lead acid battery" i get 40 dollar + big cases of batteries, could you please give a example in the form of an ebay-link?
Anyway thanks a lot and when i have ordered the parts i will try to upload the stuff!
Greetings
Click to expand...
Click to collapse
Thanks for your reply,
After thinking I want to use a second1-5 volt boost regulator attached a small high capicity battery of 3.7 volt. (like a galaxy sIII battery or something. So if i put the switch to on the extra battery should charge with 5v my phone battery. Or i could charge my phone directly from a high efficient solar cell with 5v.
I indeed have no idea how to prevent backfleeding. Do I need diodes / light emmitting diodes for this? And indeed the batteries you mentioned are way to big. I am planning to use an old battery from an other phone with the 5v boost regulator mentioned above. Further i don't understand where you see a computer in my scheme?
Your mod ( i think i it deserves that wonderfull name) with the 12v battery is a good idea. Very handy when going out without a charge point. I usually go to school and am probably able to put the large battery in there, but as i mentioned i want to keep it a "phone case".
My ultimate goal is to make the tiniest possible case for the htc one s ville with,
- a very small usb hub 4 port for 3 female ports and inside a micro sdhc memory for more storage.
- Add the charge ability, so i don't need to take the phone out of the case to charge
- be in otg mode and charging mode at the same time (i guess the hardest challenge)
optionary:
- Add a battery so when i get the actual phone out of the case the solar cell can keep providing power to the battery
- Add a solar cell
- make it actual work with multiple switches
Really appreciate your help!
Greetings,
I misunderstood "First about the charger, i will use my 5v 1amp charger (micro usb) or an usb male to male usb cable from my pc to charge" to mean you might have a computer available to charge. I guess you just meant the cable itself. Understood.
I'm not an electronics expert by any means but yes I believe diodes will prevent the current from flowing in an undesirable direction but they won't prevent one battery from draining another. Two batteries connected in parallel can drain each other and the diode will slow that but I don't think it will eliminate it. Might be able to mitigate the affect by opening one of your switches when the auxiliary battery is not in use. When two batteries are wired in parallel they are frequently connected to an isolator that has three terminals (for a two battery setup). Terminals one and two go to batteries one and two and terminal three goes to the system it's connected to. Batteries one and two never 'see' each other and therefore cannot affect or drain each other.
Not sure I have anything else that can really help... GOOD LUCK! And post pics and details if you build a working prototype.
Thanks again!
I'll try to order a couple extra diodes with low consuption, that plus the switches will hopefully do the job. I ordered yesterday the parts out of China, so it'll take a month to get it in my hands. Now I have more time to consider how it can be assembled all together, but if i get anything i will post it directly!! If it works i may try to make a tutorial for other people so they could also enjoy more ports on their phone!
Greetings