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[Q] got a generic charger....it says-5v 500mah,original is 5v 1a(amper)is this ok?

it says- output :5v 500mah
the original says-output:5v 1a(amper i guess)
will this screw up the battery?

chances are no, considering it is half what htc recommends you charge it with, either it will charge it very slowly (half the current of the original) or the voltage wont provide enough to kick the phone into charging mode and nothing will happen (i.e. the charger "wont work")

Thanks for the help

It'll work, but as panyan said, it'll recharge much more inefficiently than with a 1 amp charger.

Actually... It will charge the phone exactly as charging via USB, as USB is limited to 0.5A.

Yep, it will charge your phone just fine @ USB charging speed, I have a similar charger.

And some of you forgot to mention that the phone will struggle when for example you will play games or use gps. Charge will be insufficient and instead charging it will slowly discharge while using it.
Sent from my Desire HD uing XDA App

Well yes and no, in normal usage it will charge phone, but when you use your phone the way that you would drain the batty in two hours, then it will discharge.

Hey... Yeah if the charger is a car charger then it may not charge fast enough if using GPS software which can drain the battery fast. 1Amp reccomended for faster charging... other than that should charge fine but just slow like USB charging (which has a max of 500mA).
One question guys... I bought a car charger from ebay listed as for HTC phones. It looks like a cheap knock off product with a glowing blue HTC logo when used in the car. The device is rated at 2Amps. Now from what little I know about electronics I've been told that AC/DC Plug packs with more Amps are ok and the device just only uses what it needs. I'm not however familiar whith battery charing when you have a higher rated Amps charger... Would the battery on the phone just be greedy and "ask" for the full 2Amps? Would this then put strain or be dangerous by charging the phone too quickly?
Secondly while we are on the topic of electronics... I'm trying out a super cheap ebay battery supposedly rated at 1600mAH (I know these rating are usually fake). I've noticed the HTC battery is around 4.17V when fully charged. This battery charged up to 4.2V fully charged... Is that dangerous for the device?

2 amp is better, correct me if i am wrong. So the output is 5V and 2A, is that mean the power is 10W every hour ?

2 A charging current (if the phone takes in that much) will damage the battery in a long term use.

It is incredibly unlikely that the phone will discharge the battery faster than it charges unless you're doing something very wrong, e.g. Running a console emulator while downloading a large file over HSDPA with WiFi enabled (but not connected) and using GPS navigation with screen brightness at maximum!
Screen and background services take approx 150mAh, and I doubt radio will take much more than that combined. That puts drain 200mAh less than USB charging, 700mAh less than direct charging.
FYI: There's a spec for USB charging of mobile phones from supported USB ports which can pull up to 1500mA.

DeathJester said:
It is incredibly unlikely that the phone will discharge the battery faster than it charges unless you're doing something very wrong, e.g. Running a console emulator while downloading a large file over HSDPA with WiFi enabled (but not connected) and using GPS navigation with screen brightness at maximum!
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Hmm... not sure for Desire HD I haven't tested GPS with SatNav software using current widget... I do know that I'm pulling well over 200mA just with basic use at home with Wi-Fi on and GPS & Bluetooth off and I kill all backround apps. I do know that I've been in the car and seen TomTom app on my friend's jailbroken iPhone 3G (or 3Gs) and with the GPS on and not doing anything intensive... we were actually travelling down a long straight highway, the phone was chewing more battery than the car charger could charge, so he switched off GPS.
Ah also guys no need to worry about the 2Amp charger... It sh*t itself on the 3rd car use and no longer works at all. Junk! I also noticed on the 2nd car trip that opening Android SpareParts the charge is displayed as USB Charging not AC Charging so yeah I believe that the car charger was only a standard USB (max 500mA) power output and not 1Amp let alone 2Amps. Annoying how false advertising or labelling is part and parcel with cheap Chinese products.I was meaning to test the charger's output with Current Widget (which is what I'll do for my next car charger) but the charger crapped out and was useless before I got a chance.
One thing I did notice from looking at a log using Current Widget while charging my phone on the A/C charger in standby, the charge tapers off the power output the more the battery is charged. To get an accurate idea of if the car charger is going to be outputting 1Amp I'd be sure the phone battery is down to 40% (or in the 40s) then with all other stuff switched off I'd run a log on Current Widget and turn the screen off for a few minutes. You should have a reading of around +700 to +800mA if the car charger is rated at 1Amp.
Be wary of the cheap Asian knock of car chargers with the coil spring cord and the HTC logo that lights up blue.... Not worth the 3 or 4 bucks they sell on ebay for.
There's a spec for USB charging of mobile phones from supported USB ports which can pull up to 1500mA.
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There's commonly those double USB cables for laptop hard drives so yeah I can see that if the USB ports are actually giving you the full rated maximum of 500mA you can get 1Amp output with this kind of cable but 1500mA?!? The only way I'd see possible for this is either you have a tripple USB cable connected to 3USB ports that are all outputting the full 500mA (and that's if a triple cable even exists or lets say you solder another one onto a double cable) or you have a USB AC/DC charger or some other USB port/hub you've rigged up which provides more than the USB standards of max 500mA per port. How else is this possible?!? Has the max power output of 500mA changed since USB 2.0 standards?

yeah there are usb 2.0 ports with more than 500mA power supply.
some companys give some extra juice to their (or often only one) usb ports.
for example: i've got an Dell Studio XPS 16 Notebook here. it has 3 usb ports, 2 with normal 500mA supply and one with 1A (for charging your phone, etc).
DN41

Can I use a Blackberry Charger to charge my Droid?

My Samsung Droid Charge charger has an OUTPUT of the same voltage and 700 MILI amps.
My Blackberry Bold charger OUTPUT has the same voltage but is 1 AMP output... or 1,000 MILI amps.
If I use the Blackberry charger in my new Samsung Droid Charge will that mess anything up in the Samsung? could it shorten the life of the battery?
Thanks!

sure can, including wall chargers and car chargers

well if the amperage doesn't match exactly couldn't that mess up the Droid Charge?

it should be fine...but you might confuse your phone into thinking that it is a cutting edge smartphone circa 2006

If the power output of the charger you want to use is rated at less than what the OEM one is, you would only damage the charger itself if it isn't made properly.
The phone will pull a specific charge from the charger, say 500mA as an example. If the charger is rated at 400mA and doesn't have wiring to prevent an over-draw, you will damage the charger, especially if you use it for extended periods of time. If the charger does have circuitry to prevent over-drawing power, you'll just charge the phone slower. If you use a charger rated at 1000mA and the phone pulls down 500mA, using a higher rated charger doesn't make the phone charge faster as it will still just pull the 500mA. You'd just be less likely to damage the charger using one rated for more than what the device will accept.

Charge faster
imnuts said:
If the power output of the charger you want to use is rated at less than what the OEM one is, you would only damage the charger itself if it isn't made properly.
The phone will pull a specific charge from the charger, say 500mA as an example. If the charger is rated at 400mA and doesn't have wiring to prevent an over-draw, you will damage the charger, especially if you use it for extended periods of time. If the charger does have circuitry to prevent over-drawing power, you'll just charge the phone slower. If you use a charger rated at 1000mA and the phone pulls down 500mA, using a higher rated charger doesn't make the phone charge faster as it will still just pull the 500mA. You'd just be less likely to damage the charger using one rated for more than what the device will accept.
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I had purchased a usb cable a couple of years ago on kijiji for my BB bold back then because I didnt have a charger for it. Then I got the S3 and one time I randomly used the BB cable connected to the S3 charger via USB, I noticed the phone charged WAYY faster than the normal S3 cable does. Now I got an S4, and it still charges a lot faster than the normal cable for it. In fact I'm charging both my S3 and S4 at the same time right now, the S3 with normal cable charged from 4% to 15% in the exact same amount of time my S4 charged from 48% to 72% with BB cable. Does this mean I'm damaging my charger that's connected to the BB cable?

FlashThisB said:
I had purchased a usb cable a couple of years ago on kijiji for my BB bold back then because I didnt have a charger for it. Then I got the S3 and one time I randomly used the BB cable connected to the S3 charger via USB, I noticed the phone charged WAYY faster than the normal S3 cable does. Now I got an S4, and it still charges a lot faster than the normal cable for it. In fact I'm charging both my S3 and S4 at the same time right now, the S3 with normal cable charged from 4% to 15% in the exact same amount of time my S4 charged from 48% to 72% with BB cable. Does this mean I'm damaging my charger that's connected to the BB cable?
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If by charger you mean that little box that plugs into the wall, that is actually a power supply. It just converts 120VAC 20A to 5VDC and whatever current it specifies. Also the stock s4 uses qualcomm quick charge, which means that if you use the stock power supply with the s4, it will charge at up to twice normal speed, provided you have a compatible cable (which it seems the BB cable is).
Sent from my SCH-I510 using Tapatalk 2

[Q] Which is better for the battery trickle or mains?

I tend to charge my transformer by leaving it plugged into my pc via usb for most of the day.
Does anyone know if this is bad for the battery compared to using mains to charge?
Obviously with the transformer it takes a very long time to fully charge via usb so it is plugged in for hours and hours.

The battery is a Lithium Polymer (Lipo) so it doesnt have a memory like the old Nicads and its even better than NiMH or Li-ion. Newer Lipos can be charged at upwards of 2-3C. There is no benefit from trickle charging these batteries. The internal charging circuit wont allow it to happen anyway. Once the battery hits 4.2v per cell it will stop the charge. So to answer your question; no it doesnt matter which you use to charge it. Might as well use the main charger and have it done faster.

Interesting, but do we know the transformer uses the newer battery and could you provide a reference to the info for this newer type of li-ion battery?

Well in this case the 2-3C charging is irrelevant since we have no way of charging it that fast anyway since the TF has some sort of internal charging circuit. I was just trying to make the point that the main charger is not nearly putting out enough current to cause the battery any harm or for that matter a shorter life than the USB would. Looking at the AC charger it says 15v 1.2A so it should charge at about 2.5 times faster than a typical USB port if it were putting out 15v (it doesnt...it only puts out 5v 500mA). Im actually surprised that at 5v it manages to charge it at all....guess thats why it has to be off and sit there for 2 days.

carrera0to60 said:
Well in this case the 2-3C charging is irrelevant since we have no way of charging it that fast anyway since the TF has some sort of internal charging circuit. I was just trying to make the point that the main charger is not nearly putting out enough current to cause the battery any harm or for that matter a shorter life than the USB would. Looking at the AC charger it says 15v 1.2A so it should charge at about 2.5 times faster than a typical USB port if it were putting out 15v (it doesnt...it only puts out 5v 500mA). Im actually surprised that at 5v it manages to charge it at all....guess thats why it has to be off and sit there for 2 days.
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I had the general impression that slower charging of batteries is usually better. You usually don't get something for nothing. If the newer batteries are different that great but where did you read this?

[Q] Faster Charger? Please advise

Hey,
I noticed that the droid charge has a bigger battery but it take a lifetime to charge.. is there a better charger I can get other than the one that came stock with the phone? Please let me know. I would really appreciate it.

The stock actually charges fast compared to USB...use a higher amperage charger with the stock usb cord (so it doesn't limit to 500ma). I use my Galaxy Tab charger...works great
Sent from my Droid Charge running GummyFroyo 1.9.1

kvswim said:
The stock actually charges fast compared to USB...use a higher amperage charger with the stock usb cord (so it doesn't limit to 500ma). I use my Galaxy Tab charger...works great
Sent from my Droid Charge running GummyFroyo 1.9.1
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Well I am using the USB in the pc and the battery has not moved once notch ... has to be the rom (gingerbread) or the combnation of usb cord and charger.

stepinmyworld said:
Well I am using the USB in the pc and the battery has not moved once notch ... has to be the rom (gingerbread) or the combnation of usb cord and charger.
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PC USB ports do not do a good job charging phones. they don't have a lot of power going to them. In addition, if you're using your phone while its charging from your computer you will not likely see it charging at all since all the power its getting is going to whatever it is your doing.
The same is true of car chargers. I had mine plugged in in the car for 45 minutes using the GPS. It charged 2%. The point is, the only real effective way to charge your phone is by using a regular outlet.

streetlightman said:
PC USB ports do not do a good job charging phones. they don't have a lot of power going to them. In addition, if you're using your phone while its charging from your computer you will not likely see it charging at all since all the power its getting is going to whatever it is your doing.
The same is true of car chargers. I had mine plugged in in the car for 45 minutes using the GPS. It charged 2%. The point is, the only real effective way to charge your phone is by using a regular outlet.
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Correct about the pc charging; it only runs at .5 amps (500 ma) while the stock charger has 1 amp. However, the car charger really depends on what kind you're using. I use a 2A and it charges fine.
Sent from my Droid Charge running GummyFroyo 1.9.1

streetlightman said:
PC USB ports do not do a good job charging phones. they don't have a lot of power going to them. In addition, if you're using your phone while its charging from your computer you will not likely see it charging at all since all the power its getting is going to whatever it is your doing.
The same is true of car chargers. I had mine plugged in in the car for 45 minutes using the GPS. It charged 2%. The point is, the only real effective way to charge your phone is by using a regular outlet.
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ok cool. so i could just look for a charger will higher voltage being delivered. I hope i get the right one that is compatible to the droid charge. Dont wanna burn the battery out etc

No, not voltage. Amperage. Big difference. Just get a charger with a USB port and a high amperage...I don't think you'll find a higher amp charger specifically compatible with the Charge.
Sent from my Droid Charge running GummyFroyo 1.9.1

kvswim said:
No, not voltage. Amperage. Big difference. Just get a charger with a USB port and a high amperage...I don't think you'll find a higher amp charger specifically compatible with the Charge.
Sent from my Droid Charge running GummyFroyo 1.9.1
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ok thanks!

You need a charger that won't be seen as a USB connection on the phone. If the phone thinks that it is plugged into your computer, it will charge at roughly half the rate of the wall charger. Wall charger will charge at ~700mA I believe, and the USB/Computer connection will charge at ~400mA. You can find the actual numbers in the power regulator driver in the kernel source though.

I have a motorola 950 amp car charger I got off amazon for $5. It works well but if the screen is full bright and I'm running navagation I have seen the battery level drop. To keep up you need a 1+amp charger. That being said the harder you charge the batteries the quicker they will wear out.

imnuts said:
You need a charger that won't be seen as a USB connection on the phone. If the phone thinks that it is plugged into your computer, it will charge at roughly half the rate of the wall charger. Wall charger will charge at ~700mA I believe, and the USB/Computer connection will charge at ~400mA. You can find the actual numbers in the power regulator driver in the kernel source though.
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This is pretty interesting. I'm not a phone dev or an electrician, but I assume these mA numbers are something that are 1) lower than what is actually safe and 2) might be able to be tweaked by a dev with nothing better to do. Not that you are even close to falling in that category, but I think many users would be quite interested in being able to get more charge out of shorter durations, albeit at the risk of burning out their phones.

Search for my responses here on charging cables... Sorry but I'm at 35,000 feet in an airliner and can't search very well to include a link. The "magic" to allow a charge current greater than 500ma is either in the stock AC charger or in a "charge only" cable. The data wires to the phone have to be shorted otherwise the phone will think that it is plugged into a computer and will start USB services and will limit the charging current. Cheapest to fabricate your own adapter!
Sent from my SCH-I510 using XDA Premium App

So it wont harm my battery at all to use my galaxy tab charger on my phone? What about in the long run will it degrade faster?

I think the phone has intelligent charging logic (like the newest iphones) so if you keep it cool it will take care of itself. YMMV however!
Sent from my SCH-I510 using XDA Premium App
Sent from my SCH-I510 using XDA Premium App

You could have a 10 amp charger, and if it is picked up as a computer/usb connection, the phone is going to pull the same amount of current as it would just plugging it in to your computer. The same goes for car and wall chargers that get picked up as a computer/usb connection. It doesn't matter what charge rate the charger supports, the phone is going to pull the same current as it is regulated to via the kernel. The only time it won't pull the full charge current it is setup to pull is if you have a charger that is rated for a slower charge rate than what the phone wants AND it won't allow charging above its stated capacity (any good charger should do this).
I have looked around (not much though) at how to make the charge rate faster before, but couldn't see how to do anything besides make the phone charge as fast over USB as it can via the wall charger. However, from what I have read, Li Ion batteries do better if they receive a slower charge to full and will not die as fast compared to being rapidly charged.

imnuts said:
You could have a 10 amp charger, and if it is picked up as a computer/usb connection, the phone is going to pull the same amount of current as it would just plugging it in to your computer. The same goes for car and wall chargers that get picked up as a computer/usb connection. It doesn't matter what charge rate the charger supports, the phone is going to pull the same current as it is regulated to via the kernel. The only time it won't pull the full charge current it is setup to pull is if you have a charger that is rated for a slower charge rate than what the phone wants AND it won't allow charging above its stated capacity (any good charger should do this).
I have looked around (not much though) at how to make the charge rate faster before, but couldn't see how to do anything besides make the phone charge as fast over USB as it can via the wall charger. However, from what I have read, Li Ion batteries do better if they receive a slower charge to full and will not die as fast compared to being rapidly charged.
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Slow charging is true to some extent, but there is no need to charge our battery's under 1.5amp.
And shorting the two data pins on the USB doesn't work it looks for a specific resistance, I saw the ohm load somewhere, but now of course I can't find it lol..
When I get really bored tonight I will edit this and figure it out. But yeah our phones can easily pull 800ma or more with full screen brightness and maxed out processor. So that would result in no charging at all on some chargers. I use a 2a wall charger that came with my evo and it charges very very quickly. Never more than 1 hour to full charge unless I am gaming on it while it charges lol. This is using the cord that came with the phone of course so that it knows it isn't in a data enabled usb slot.

MasterRy88 said:
So it wont harm my battery at all to use my galaxy tab charger on my phone? What about in the long run will it degrade faster?
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In electronics, when given a voltage source (as opposed to a current source) the Voltage is set to a fixed value. That is what our wall USB outlets are. Voltage sources
Think of Voltage like a waterfall. The water is always dropping from the same height. The voltage is always set to the same value.
The mA rating (the current) is determined by how much juice the phone can pull. Just because a charger is capable of supplying more current (say 1 or 2 amps), it doesn't mean that the Droid is going to draw that much current. However, if the droid is capable of pulling more current, it will benefit by charging faster.
Does that help at all?
*edit* Dang it. Didn't scroll down enough to see that imnuts posted already. Oh well, screw it. I'm leaving my post. lol. People who don't know about Voltage and Amperage need to hear the waterfall example at some point in their lives.

lane32x said:
In electronics, when given a voltage source (as opposed to a current source) the Voltage is set to a fixed value. That is what our wall USB outlets are. Voltage sources
Think of Voltage like a waterfall. The water is always dropping from the same height. The voltage is always set to the same value.
The mA rating (the current) is determined by how much juice the phone can pull. Just because a charger is capable of supplying more current (say 1 or 2 amps), it doesn't mean that the Droid is going to draw that much current. However, if the droid is capable of pulling more current, it will benefit by charging faster.
Does that help at all?
*edit* Dang it. Didn't scroll down enough to see that imnuts posted already. Oh well, screw it. I'm leaving my post. lol. People who don't know about Voltage and Amperage need to hear the waterfall example at some point in their lives.
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I don't really understand this because voltage and amperage are different things...
Sent from my Droid Charge running GummyFroyo 1.9.1

skydeaner said:
When I get really bored tonight I will edit this and figure it out. But yeah our phones can easily pull 800ma or more with full screen brightness and maxed out processor. So that would result in no charging at all on some chargers. I use a 2a wall charger that came with my evo and it charges very very quickly. Never more than 1 hour to full charge unless I am gaming on it while it charges lol. This is using the cord that came with the phone of course so that it knows it isn't in a data enabled usb slot.
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Did you read anything I posted The phone is only going to pull a set charge rate, depending on what type of connection it sees. It doesn't care what power rating the connection has, it will pull as much power as it can, up to the limit defined in the power regulator of the kernel. You can use a 1A charger, or a 2A charger, doesn't matter, the phone is still only going to pull a set. The phone will pull 475mA via USB connection (your computer) or 800mA via an AC adapter (wall charger). Unless you figure out how to hack the battery driver to allow a faster charge, those are the two rates you get, regardless of how much power the wall charger can supply.
kvswim said:
I don't really understand this because voltage and amperage are different things...
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A charger is going to provide a set voltage (5V I believe) and that is the only constant in the charging process for what is going into the phone. The amperage is going to be determined by the phone or the wall charger. The only time the wall charger will be the limiting part in charging is if its circuitry is setup to cut off charging over a certain level, and if it is rated for a lower charging rate, odds are, it probably won't cut it off and instead produce a fire hazard.
Something else people don't realize is that the charging rate isn't just bad for the battery if you charge to fast, pulling to much power in to charge the battery, especially while using the phone, creates a heat problem as well. While the phone will shut itself down before any major damage can occur, why would you even want to create a situation that could potentially damage the phone hardware?

imnuts said:
Did you read anything I posted The phone is only going to pull a set charge rate, depending on what type of connection it sees. It doesn't care what power rating the connection has, it will pull as much power as it can, up to the limit defined in the power regulator of the kernel. You can use a 1A charger, or a 2A charger, doesn't matter, the phone is still only going to pull a set. The phone will pull 475mA via USB connection (your computer) or 800mA via an AC adapter (wall charger). Unless you figure out how to hack the battery driver to allow a faster charge, those are the two rates you get, regardless of how much power the wall charger can supply.
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what about car chargers? i have one that I think is 2A and it seems to charge my phone a bit faster than my wall charger
blazing through on my VZ Droid Charge 4G

Using a 2A charger

Anyome using a 2A charger instead of a turbo charger?
Like a samsung 2A charger
Or a 2A power bank?
Any issues?
Because 1150 mah is too slow

I was also wondering this.I tried it with my 2,4a ipad charger once and it was charging twice as fast, but i dont know if this is good for the phone. Using the normal charger again to be sure.

With normal 1.2A charger, it takes almost 3+ hours for my phone to fully charge. I used my Galaxy Note 10 charger which is 2A and it got charged in 2 hours. I read it in the forums that even with 2A charger, we cant take the advantage of turbo charging as it will need a charger of 2.4A.
I dont know how 0.4A will make a difference but still, my knowledge is limited in this case and wouldnt want to comment on it.

The charger has to be Qualcomm QC 2.0 certified (that's a specification) to take advantage of the turbo charge mode. The amps put out by the charger is kind of secondary in this situation as the charger and phone both need to be "talking on the same page" i.e. QC 2.0
At that point (charger is QC 2.0) the special circuitry kicks in and goes into turbo mode. So its a little more involved than just throwing more amps at the phone. If you google Qualcomm QC 2.0 specification then it will give you a better idea of what it is all about.
Sent from my XT1563 using Tapatalk

Turbo charging steps up to 9v and 12v depending on what wattage the phone can handle.
I think our phones are 15w and the Style is 20w or so.
I can't get my phone to charge faster with a 2amp charger though, only my turbo charger.

I used digitech 2.4amp charge ans works like a charm superb....

It isn't causing any issues? Like battery degradation?
Sent from my XT1562 using Tapatalk

I've been using my Moto turbo charger every night for a couple weeks now and haven't noticed any issues. The phone doesn't seem to let the battery get over 35'C when its charging, so I don't imagine it'll damage the battery.
Think I may get a car charger soon, sometimes I forget to charge at night so it'd be cool to get a full charge on the drive in.

Battery will very likely not last as long when doing fast charging always compared to "normal" charges

Any fact to back that claim?

Im using a Belkin 2.1A charger, no problems whatsoever.

So what's conclusion is it safe to use 2a charger without doing damage to battery

prashu#1 said:
So what's conclusion is it safe to use 2a charger without doing damage to battery
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I'm using a 3a charger and it's fine

You can't harm a battery with a higher amperage output charger. The phone will only consume what it is able to. If the voltage was higher (excluding quick charge adapters) then yes that will do damage, but that's a strange situation as no charger should do that unless it's quick charge.
That being said, on hand I do have a feeling that quick charge can actually do long term damage if used a lot but on the other hand, it seems to limit the maximum temperature to around 38'C. Above 40'C can cause irreversible damage to the cell. I'm using a car charger now and when the phone is in use, it gets up to around 38 or 39 and it cuts back on the charging current.

Interesting article explaining Qualcomm, fast charge, turbo charge using all the same technique under different names. They all use the same Qualcomm technique.
http://www.androidpolice.com/2015/0...-need-to-know-about-charging-your-smartphone/