hi. the battery charger that i got with my LG optimu G Pro is ****. its just now that i checked that i have been deceived
its chinese copy and its only 0.2A charger...
now i know the reason why my phone charges soooo slow...
anyways. i think Note 3 and iPad air charger are 2A and 2.4A. so can i use iPad or Note 3 charger to charge my phone? will that be ok?
any one here using that?
thanks
Use OEM LG charger with 1.2 output. I am using LG G2 OEM charger and it charges very fast! But not sure it's compatible completely
Sent from my LG E988
If youre tech savy you can make your own,you just need a switchmode 5v regulator (they usually put out up to 3 amps) and you put a resistor across the data pins (i think 100 ohm) and itll charge the phone as fast as it can safely charge. I made my own charger for the car and the phone gets fully charged in about an hour and a half. (With screen on and playing Bluetooth music). Other wise if you buy a charger, get as many amps as you can. Atleast 1.5+ . and to make the phone charge in AC mode if it only says USB you need a resistor across the data pins.
Thats funny... my G Pro came with a 1.8a LG charger, my G2 came with a 1.2a.
Yeah you'll be fine. The "extra" amperage in the charger is available capacity that your phone can draw from, it will regulate itself but that can also depend on the charger and how they pin the USB. Its different than if you have extra volts (like a 10vdc charger which would provide too high of a voltage and damage electronics). I usually charge all my phones at when I get home with my wife's iPad charger super fast. Likewise you can use your LG charger to charge the iPad but will be slower since it has less amp capacity to supply. Part of the reason they provide the bigger charger is to sustain battery level while using the device (It should be large enough that the battery doesn't drain while your using the device while plugged into the charger).
Most computer USB ports typically provide .5a of power and will be your slowest charging option, at best you get a newer laptop with "high capacity" ports and it provides only 1.0a.
I've been using an iPad 1st gen charger with GPro since day one, been working flawlessly for 4 months now. Charges fast.
Related
is there any potential damage to my GS2?
the touchpad charger is rated at 2A max output and it charges the phone FAST.
around 5% in 10 minutes. so full charge in 3 hr and 15 minutes.
I have been using this for a few weeks now. No apparent issues, however could i be frying the battery?
I don't know the Amps of the OEM charger cuz my phone didn't come with one 9
(eBay) I'll assume its around 550 mAh-650 mAh.
I was using an Apple iPhone 4 charger (1A) before on my Nexus S as it was faster than the oem as well.
I picked up the HP chargers at Staples on clearance (obviously) for like $8.
I use the same time charger, and I see no negative effects. Your better off using it rather than some ebay knockoff.
Sent from my SGH-T989 using xda premium
3hrs 15 minutes means it is charging the phone at a rate of approximately 600ma/hr (1875mah battery /600 mah charge rate = 3.13 hrs) which is exactly as it should be. Phone will not charge at more than 600-700mah no matter what the charger outputs so you have "power to spare" (but not power to use). So it is perfecly fine. You could use a 100AMP charger if you wanted since the phone will only "take" what it was designed to take. Charge rate is current limited by the chipset in the phone + the kernel for protection. If it were using the full 2amps it would fully charge from ZERO to FULL in around 50 minutes then probably explode.
http://www.youtube.com/watch?v=n0M-ZX2DBxY
so how does that explain the OEM chargers being so ridiculously slow?
are they not in the 500-600 mAh range? when i first got my phone the battery was dead drained. too more than 8 hrs to get full. this was with my Nexus S charger.
I'm not saying the phone is drawing a full 2A of current, but im sure the higher rating doesn't hurt. realistically that's the MAX peak this charger can pump out. Real world, usage, it probably barely breaks 1A on any given day.
on a related note, i KNOW USB cable quality and length play a big role in charging speed.
using an extension USB cable, or cheap one, can easily DOUBLE the charging time.
madman604 said:
so how does that explain the OEM chargers being so ridiculously slow?
are they not in the 500-600 mAh range? when i first got my phone the battery was dead drained. too more than 8 hrs to get full. this was with my Nexus S charger.
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Good question. The output rating of a charger is rated when it is NOT UNDER LOAD. When you put it under load output drops. A 2amp (2000mah) charger under load will drop as well but maybe to 1500 or even 1000mills. The 1000mills is still above the max charge rate of the device and will of course charge it faster than the 500mill charger when it drops to maybe 400mills.
If it took 8hrs either the charger was defective (low output) or way over rated or something else was at play. Also manufacturers will want to charge as slow as possible to avoid overheating or even fires or explosions.
I have a 120amp 12vdc power supply that I used to use for a 300 watt ham radio amplifier which is hooked up to a multiple cig lighter adapter socket which I use to charge my various multiple devices (iPad 2, 2 cellphones and a couple BT earpieces). I use 3 Scoche 2.5amp output USB cig adapters and the most the phone draws is around 600mah (again, not accurate but reference).
The only way to test is to put a meter across it while charging and see how much current is being pulled. The ATT Galaxy S2 was tested that way and was pulling less than 650mills with a high output rated charger.
Just wondering because I don't want to mess up my battery but would rather not have to buy another car charger if I don't have to.
fatmando2 said:
Just wondering because I don't want to mess up my battery but would rather not have to buy another car charger if I don't have to.
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I would use it personally, but hopefully someone in the know can give a better answer.
I would compare the amp against the charger.
if it's less which most car chargers are, than you are ok..
only prob. you'd have is if a charger was putting out too much amp and toast the battery.
my 2 cents
take with grain of salt.
I believe it's actually the other way around. You can use a more powerful charger on a device that requires less, because the device will only draw the power it needs.
However don't use a charger that doesn't have enough power to charge the device, as the device could draw more power than the charger can provide and you risk catching the charger on fire.
This is how MacBook chargers work anyway. For example you can use an 85 watt charger to charge a 45 watt MacBook but you should not use a 45 watt charger to charge an 85 watt MacBook. (I have a few MacBooks that's why I used that reference).
I would assume cell phone chargers are the same concept.
Sent from my HTC One.
josh995 said:
I believe it's actually the other way around. You can use a more powerful charger on a device that requires less, because the device will only draw the power it needs.
However don't use a charger that doesn't have enough power to charge the device, as the device could draw more power than the charger can provide and you risk catching the charger on fire.
This is how MacBook chargers work anyway. For example you can use an 85 watt charger to charge a 45 watt MacBook but you should not use a 45 watt charger to charge an 85 watt MacBook. (I have a few MacBooks that's why I used that reference).
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Yep. A device will only pull the current that it needs, so high-powered PSUs on low-current devices is fine and dandy. The only difference in electrical output that would fry the phone would be voltage, but since all USB chargers "are supposed to" put out 5VDC, you're safe.
As for using chargers with less than sufficient current, I can only speak to my experience. Personally, I've never had an issue charging any of my more beefy devices (Nexus 7, Galaxy Nexus, or HTC One) off of an old 500ma charger that came with my Galaxy S (or a car charger with that same output, for that matter). The devices just charge slower. The PSU gets noticeably warm, but I'd never say it got hot to the point where the threat of combustion was even remotely possible. And as for the comparison to the MacBook charger, you're talking a difference of 40 watts, whereas these little USB chargers have a difference of maybe 2.5 watts (from the 500ma to 1A models). Not a lot of power there, really.
That said, if I were to buy a new one, I'd definitely get a charger that has the output spec to match or exceed the device's OEM charger.
I have been using the Moto charger (both USB and car, borrowed from previous Razr Maxx) and they both work great. No issues.
Your phone will regulate the power so you will have nothing to worry about with almost any charger. I plug my phone into my tablets charger all the time which is 2.1a and have never had a problem. My HTC DNA was the only one that had an issue, it would say it's not the proper charger and it's enabling slow charging. Long story short, you should have no issues
i am thinking about if my E975 is limited when it comes to how many amps it can charge with bcs i recently brought a 2A charger also tried it out on my Google Nexus 7 2013 and i don't feel like it charges that much faster then my original LG charger with a 3meter flat OEM kable.
the charger i brought is said to charge with 2A while the original LG is only 1.2A shouldn't i be feeling a difference?
puma99dk| said:
.the charger i brought is said to charge with 2A while the original LG is only 1.2A shouldn't i be feeling a difference?
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No, you shouldn't. You can plug it into a 10 Amp charger, but the phone will only draw the amount it needs. Remember, it's not the charger pushing the current to the phone, it's the phone pulling it from the charger. The charging current is determined by the phone - each Li-Ion or Li-Po battery has a controller curcuit. The important thing is for a charger to be able to provide what a device wants to draw - otherwise, it would charge slowly, or not at all. So, a charger should be rated for not less than X Amp. More amp rating won't hurt, but it won't increase the actual current...
oh this is very useful. I also had the same question.
mine came with a 750mA (.75A) charger. As I left my charger at home during the holidays, I had to make due with one that I bought from a nearby tech store. I was very happy with the charger that I bought as it charges my phone really fast. I found out that my new charger was also a 2A model.
so I guess, in my experience, I noticed a big improvement in charging speeds comparing the 750mA with the new 2A charger. But I guess coming from a 1.2A charger, it only makes little difference.
I've had a new Find 7a for a few days, and I'm pretty impressed with the rapid charging it is capable of doing with their VOOC tech. However, since getting a second VOOC charger for use in the office (I'd rather not lug around that brick if I can avoid it) may take some time, I've tried to use some extra chargers I have lying around from devices that are either broken or lost. I tried chargers for an iPad 1st gen, an Asus Transformer 1st gen, and that of a Nexus 7 2nd gen, all of which are rated to provide 2.1 A of current at 5V. I found that none of them actually worked: the charging light turns on, the battery icon says it's charging, but after about 15 minutes, the phone's charge loses a percentage point or two! The same thing with the power bank I carry around.
To figure out why this happens, I got a cheap "charger doctor" gadget that gives a voltage and current reading when plugged between a USB port and a device, and used it to measure the current being provided to my phone. The results were rather surprising to say the least: all the chargers I used gave it only a piddling 150 mA of current! This was very strange so I did a few further experiments later on using different cables and the Nexus 7 charger, and the results were rather interesting:
1. Original Find 7a cable from the box: 850-900 mA
2. Nexus 7 cable: 850-900 mA
3. Nexus 4 cable: 150 mA
4. Galaxy Nexus cable: 150 mA
5. Generic USB multi-pronged cable (includes connectors for mini-USB, Apple 30-pin and Lightning in addition to microUSB) - 500 mA
6. Most other generic USB cables: 150 mA
I got the same results using the iPad and Transformer chargers, as well as the power banks I have. This is very strange, because I can get at least 450 mA from any of the above cables when attempting to charge a Nexus 4 under the same conditions. Same too with the cracked but still operational Asus Memopad HD7 I've got. Anyone know why the Find 7a is so picky with cables? 150 mA seems to be less than the amount of current the phone draws on idle standby, so only cables 1, 2, and 5 provide an amount of current sufficient to actually charge the phone rather than just slowing down its rate of discharge. I wonder if there's some sort of cable that would net me something like 1800-2000 mA, which is the actual rated current of my chargers.
stormwyrm said:
Anyone know why the Find 7a is so picky with cables? 150 mA seems to be less than the amount of current the phone draws on idle standby, so only cables 1, 2, and 5 provide an amount of current sufficient to actually charge the phone rather than just slowing down its rate of discharge. I wonder if there's some sort of cable that would net me something like 1800-2000 mA, which is the actual rated current of my chargers.
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Well, maybe the OPPO Find 7 is designed specifically for VOOC/rapid charging. A little charge on the OPPO with my Fonepad 7 1amp charger (sold as a 'quick' charger) took 40 minutes to charge 13% (from 87%) whereas charging the same amount on the 7inch Fonepad took 43min. And my old Dell Streak took 12min to charge 13% with a 1amp charger.
Horses for courses, old man.
Stock adapter and charger with screen OFF will get you about 2A. Screen on will be about 500mA to 1A. For some reason..
erm stormwyrm, the other usb cables you are using don't have as many wires as the VOOC charger does which also do that u can't do more then like ~1amps through them as you can clearly see urself.
The VOOC Charger is 4.5apms and uses 7 pin usb connection to charge with, while my Asus Nexus 7 (2013) USB Cable only got 5pins and comes with a 1.35 amp charger.
i use my VOOC for my Nexus tablet from time to time, but since the tablet is hardware limited to i think it's 2amps not totally sure, but that does that it still charges a little quicker then with a normal cell phones chargers. (I have never used my Asus Charger for my Nexus 7 (2013) bcs i got mine from the UK and the UK plugs don't work in my country.)
I know most people don't have a meter, and probably never check.
I use battery monitor widget pro to monitor mAh when charging to check cables and devices. I've been reading threads and threads about charing the LG G3 in 1.5hours.
My Nexus N7LTE will get up to 1000+mAh easily.. using the same cables, I am only getting ~500mAh recharges off the same setup. I have a 17W and 15W powergen charger and I've also tried using my 2.1 Belkin, both of which usually charge my N7 very well. The LG G3 often struggles to get 134 - 300mAh currently on the same setup. screen off overnight it was up to 500mAh tho.
What chargers are you guys using? and what mAh are you getting (if you are able to provide?
I'm using my stock LG charger and cord. The charger is only 1.1a out and I'm getting a 2.4a out one soon, but right now when I'm using it to browse Web pages it gets around 480mAh, but when not in use it usually gets around 900mAh. Sometimes when I'm gaming for a few hours I'll chuck it in my USB 3.0 port to charge fast, and even though USB 3.0 can only deliver 950mAh, it sits on around 400. Not great for fast charging, but if you've got hours to kill then it works. Alternatively if I need a really fast charge, I'll plug it into my mum's Galaxy S5 wall adapter. That's 2.1a out and it gets around 1.8a when it's off, and when I'm using it on that charger it gets around a solid 1.0mAh.
Should be said that I almost always have my brightness on under 20% so yeah. That's what I get.