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Hi Guys
Im going to download festival in a week and need some extra juice and I was wondering if anyone any experience of any of the AA/AAA/Solar power usb chargers? Are they any good? How long will they take to charge a phone battery (in my case 1500mah)? Will one set of AA/AAA batteries charge a phone fully and how quick?
Example Ebay Items
Thanks!
I've got a small 12v sealed lead acid battery which I hook up my car charger to overnight. It's a little heavier than what your looking at, but is reliable and lasts ages. Battery and charger cost me about £30 total, but you could get a battery for about £15
im going camping mate with no car. Could be a bit tricky hehe
Monty Burns said:
im going camping mate with no car. Could be a bit tricky hehe
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Try these, I have the freeloader one (in silver) and its great, stores charge in its own battery for use later on down the line too...
http://www.iwantoneofthose.com/freeloader-solar-chargers/index.html
http://www.iwantoneofthose.com/power-monkey-explorer/index.html
Monty Burns said:
im going camping mate with no car. Could be a bit tricky hehe
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Thats what I'm talking about. It's a small battery weighs just under a kilo, but you can attach a car charger to it in your tent. I go to glasto most years and its been serving well for about 5 years now.
Freeloder are good.
Could try switching your phone off, save some juice and enjoy the festival?
ive tried one here in the states on my g1..it sucked...it charged it but it had to be directly in the sunlight, when it wasnt in the direct sunlight it would send a surge through my phone...i was told by tmobile to not use it because it could void my warranty.
I have the IceTech i-9005, and its served me really well. I use my Kaiser a lot, and at school, I'll usually charge it up with my solar panel during my 45 minute free period. Here's a link if you're interested. It's not too expensive either, it cost me only $90 from REI. It has a large 2000 mAh battery too, so it should charge your device with no problem.
And unlike some other chargers, it has a voltage selecter, so you can choose the voltage which works with your device (but 5 volts charges most stuff fine). It also has a standard USB port on it, so any USB charging cable should work with it (it also comes with a proprietary cable and some common adapter tips). And it also has overcharge and short circuit protection, so it won't fry your battery. And although it's kind of gimmicky, it even has a bright LED light built in.
And in addition, like most solar panels with batteries, it also comes with a wall charger, so you can charge the device without leaving it in the sun, and then use the built in battery anywhere.
Overall, I'm pretty happy with it, and I would recommend that you at least take a look at it before you buy any other solar charger.
Dave
bootx1 said:
Freeloder are good.
Could try switching your phone off, save some juice and enjoy the festival?
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Ahh but then how would i be able to Facebook and make all my mates that aren't there jealous?
Hi Guys,
I am looking for an Emergency Battery Charger for Desire HD.
Mainly i want something on the cheap and light to carry. Here is what i have found. Please help me, which one should i buy:
1)350MAH EMERGENCY BATTERY CHARGER
http://cgi.ebay.co.uk/350MAH-EMERGE...sAccessories_PDABatteries&hash=item27b565b877
2)Proporta USB Turbocharger 1200
http://www.amazon.co.uk/Proporta-30...1?s=electronics&ie=UTF8&qid=1289178938&sr=1-1
3)USB 7 In 1 Emergency Battery Charger 48000mAh (Not sure if this will work)
http://cgi.ebay.co.uk/USB-7-1-Emerg...ories_MobilePhoneChargers&hash=item35ad2b52c4
4)1500mAh Extended Backup
http://cgi.ebay.co.uk/Extended-Back...709?pt=LH_DefaultDomain_3&hash=item45f6a04fa5
the first one seems rubbish, only 350mah? and the output current is half that of a usb port.. i don't think it will even charge your phone at all and probably only slow down the battery discharge.
I've found this one:
http://a-solar.eu/EN/micro_charger_am500.htm
It'll arrive today so I can say how it works only this evening.
ahmadashar said:
1)350MAH EMERGENCY BATTERY CHARGER
http://cgi.ebay.co.uk/350MAH-EMERGE...sAccessories_PDABatteries&hash=item27b565b877
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Click to collapse
lukesky said:
the first one seems rubbish, only 350mah? and the output current is half that of a usb port.. i don't think it will even charge your phone at all and probably only slow down the battery discharge.
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Click to collapse
i bought the first one (it was really cheap) and have it on my keyring with my keys, yes, of course it only slows down the battery dying, what did you expect? it is a tiny battery for EMERGENCY use, not a backup battery that can fully charge your phone multiple time for god's sake!
anyway, from 15% battery it charged it to 80% in about 35 minutes
Not a particularly cheap option but I use a Powermonkey Traveller. Although it was relatively expensive it can charge 'almost' anything with it's range of adaptors. It's seen me through many a smartphone, PSP, DSi, camera emergency!
Just my thoughts...
axel2383 said:
I've found this one:
http://a-solar.eu/EN/micro_charger_am500.htm
It'll arrive today so I can say how it works only this evening.
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Click to collapse
if you test it =) might you answering my questions, please?
the product says: "You can charge this charger by USB or Sunlight."
USB ... >> OR << ... Sunlight ?
what does that mean? if the battery charging through sunlight i'm not able to charge the phone? Or won't it be possible that the battery charges throught sunlight while the mobile is charging ?
work that thing only with sunlight oder may with roomlight too?
thanx =)
have order there freeloader pico
Will let you know how i get on once i get it!
ahmadashar said:
I am looking for an Emergency Battery Charger for Desire HD.
Mainly i want something on the cheap and light to carry. Here is what i have found. Please help me, which one should i buy:
1)350MAH EMERGENCY BATTERY CHARGER
http://cgi.ebay.co.uk/350MAH-EMERGE...sAccessories_PDABatteries&hash=item27b565b877
Click to expand...
Click to collapse
For six quid you can't really knock it, sure it's not the most powerful of devices but it serves a purpose. just ordered one myself
Also looking at this, more to cover my travel time on flights between London and Moscow where I'll be giving my DHD some serious welly...
http://www.mobilefun.co.uk/nexxus-power-pack-pro-portable-charging-kit-p23899.htm
I am thinking I will make my own power pack with a couple of electric components, 2 x 3,7V 2500 mAh NiMH packs and a nice case. Will post photos of it when I am done, maybe in a couple of weeks. Just ordered the stuff from interwebz, cost me under 10$
neigo said:
if you test it =) might you answering my questions, please?
the product says: "You can charge this charger by USB or Sunlight."
USB ... >> OR << ... Sunlight ?
what does that mean? if the battery charging through sunlight i'm not able to charge the phone? Or won't it be possible that the battery charges throught sunlight while the mobile is charging ?
work that thing only with sunlight oder may with roomlight too?
thanx =)
Click to expand...
Click to collapse
It means that the external battery can be charged by USB or sunlight: I've tested that if it's charged by USB in daylight is more rapid to charge it.
If the external battery is attached to the phone, the phone charges itself and if the charger is under sunlight it charges itself.
thanx =)
and will it only charge under sunlight or maybe in the room too ?
panyan said:
i bought the first one (it was really cheap) and have it on my keyring with my keys, yes, of course it only slows down the battery dying, what did you expect? it is a tiny battery for EMERGENCY use, not a backup battery that can fully charge your phone multiple time for god's sake!
anyway, from 15% battery it charged it to 80% in about 35 minutes
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So let me get this rite. U used the first on to charge from 15% to 80% in 35 mins... if this is correct then it is perfect!!
Just a question. Did it ran out of charge after 35mins, if not how much u were able to get out of this.
Sent from my Desire HD using XDA App
neigo said:
thanx =)
and will it only charge under sunlight or maybe in the room too ?
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it recharges itself a bit less, but it charges
ahmadashar said:
So let me get this rite. U used the first on to charge from 15% to 80% in 35 mins... if this is correct then it is perfect!!
Just a question. Did it ran out of charge after 35mins, if not how much u were able to get out of this.
Sent from my Desire HD using XDA App
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Click to collapse
yes, i used the whole emergency charger to recharge the phone and charged both properly when i got home
Sorry you bring up an old thread... but thought this may be useful picked myself up a Nexxus power pack pro, 2000MAH With car charger UK wall charger and relevant cables for £10 in the clearance section of maplins just fully charged my phone from dead with it
Sent from my Desire HD using XDA App
i bought one of these a few weeks ago. its excellent.
http://cgi.ebay.co.uk/Nokia-N900-Em...PDACharger&hash=item1c16b48938#ht_2503wt_1139
massive 5000mah battery (charged my DHD twice and still had juice). only thing it its quite big and heavy. works well though and if you have 2 USB cables you can charge 2 devices at once. came in useful when my girlfriend forgot her charger when she stayed over. definitely not something to carry in your pocket, but for leaving in a bag it cant be beaten.
How about this one? It's looking exactly for emergency
Energizer Portable Battery Charger For HTC Desire HD
http://cgi.ebay.com/Energizer-Porta...neChargers&hash=item20b4bd61c6#ht_2436wt_1140
or If you need something really solid and powerful, check this out
Energizer XP8000
http://www.energizerpowerpacks.com/vn/products/xp8000/
jkoljo said:
I am thinking I will make my own power pack with a couple of electric components, 2 x 3,7V 2500 mAh NiMH packs and a nice case. Will post photos of it when I am done, maybe in a couple of weeks. Just ordered the stuff from interwebz, cost me under 10$
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Click to collapse
Hey man, did you complete your work or even start whole trade of yours
Not the cheapest but will charge almost "anything" and it has a 5000mAh battery, go to Amazon and search for Veho VCC-A007-PBP Pebble.
I use this 5000mAh battery pack. It works very well, I get about 4 full charges from it and is able to charge 2 devices at the same time.
http://www.amazon.co.uk/TeckNet-Uni...dible-Blackberry/dp/B000NDQ92W/ref=pd_cp_ce_1
I bought the 4th one - 1500mAh Extended Backup. It works well enough for me. I get more or less a full charge out of it.
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.
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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?
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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?
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.
Click to expand...
Click to collapse
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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Click to collapse
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.
Click to expand...
Click to collapse
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 ^^
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
I Have A Samsung Galaxy Note 10.1 I Got It About 8 Months Ago I've Used The Samsung Official Charging "Cable" For Most Of That 8 Months but about 2 months ago the cable became loose at the Samsung cable to tablet end exposing the wires so I was careful with it and put it away and used my friends official cable then he needed it back so I went off and brought a generic cheep cable for $3.50 So all was good there but slowly I've noticed my battery going crazy like taking longer to charge "2 Days to full" and things like it discharging by 2% when I am on Google while its on charge and when its off charge playing 1 game uses almost all the battery.
so being the awesome soldier that I am I made myself a 5cm cable hoping that the long cable I was using had something to do with it but still I had the problems listed above so I did some Googleing and maybe a 2.5A charger would be helpful But its not recommended. also I sent a email to Samsung and being the "SUPER HELPFULL COMPANY THAT THEY ARE" has not responded to my emails in the past week's Also I Spoke To A live chat person thing and Being "Soo Helpful! " Said that its a hardware fault and I need to take it into a Samsung repair place and fork out $100+ Bucks to get it fixed "HELL NO AnT No BoDy GoT TiMe FoR ThAt" so I didn't go to Samsung to get it repaired so I want to know if any of you guys out there have any idea to fix this problem im having because its so hard to do anything.
Just Checking my emails while its on charge uses %4, On Google for like 5 mins Uses 2%, Playing A Game For 30Mins Uses Well Almost Flattens It, And Watching Some YouTube Takes It Down To 0% And Then Shuts Down( I Watch Lost Of Videos) All This While Its On Charge
At The Moment How Im Copeing Is I Carry Arrount An Inverter And A 12V Battery To Keep It Charging
The SGN 10.1 charging cable is a specially designed cable to deliver 2.1A 5V to the device.
Most "cheap" cable on the market can only deliver 0.5A - 1A 5V when used to charge SGN 10.1
You should find the correct cable specifically built for SGN 10.1
uMUm
d4rkkn16ht said:
The SGN 10.1 charging cable is a specially designed cable to deliver 2.1A 5V to the device.
Most "cheap" cable on the market can only deliver 0.5A - 1A 5V when used to charge SGN 10.1
You should find the correct cable specifically built for SGN 10.1
Click to expand...
Click to collapse
Thanks but how can a cable make all the difference i managed to charge off my old one its just got exposed wires and it still drains when i use it
Are you certain that the battery is actually draining that fast and not simply misreporting it in the UI?
I had a similar problem where the battery didn't seem to last but I eventually noticed that a reboot would completely change the amount of charge remaining, sometimes by as much as 20%. I cleared the battery stats and is been fine since.
Sent from my GT-N8013 using xda app-developers app
Well
bsaman said:
Are you certain that the battery is actually draining that fast and not simply misreporting it in the UI?
I had a similar problem where the battery didn't seem to last but I eventually noticed that a reboot would completely change the amount of charge remaining, sometimes by as much as 20%. I cleared the battery stats and is been fine since.
Sent from my GT-N8013 using xda app-developers app
Click to expand...
Click to collapse
Well actually when-ever I turn it off it doesent charge much and if I restart it the battery stays the same but over the last few days ive noticed something weird when its on chatge and I play a game it drops about 20-30% but when its not on charge and on battery it drops by about 5-6% could the charger be draining it? also I have a new new cable its generic (IM NOT PAYING $60 FOR A CHARGER CABLE) and there is no difference still does the weird charging thing also I tried the old cable and still does the same thing the olny thing wrong with the old cable is that the wires where exposed so I dident want to use it just incase it broke
THanks -Commander_Shran
If you don't want an OEM cable and charger you can buy a crap chinese one. But as you and many others have discovered - they suck. This is one of the biggest complaints I have always heard about Samsung.
The solution, and the only on that I have found that works 100% of the time is to buy a replacement from Samsung. Period. Nothing else works like the OEM parts because they aren't OEM parts.
Sent from my GT-N8013 using XDA Premium HD app
ok
Temetka said:
If you don't want an OEM cable and charger you can buy a crap chinese one. But as you and many others have discovered - they suck. This is one of the biggest complaints I have always heard about Samsung.
The solution, and the only on that I have found that works 100% of the time is to buy a replacement from Samsung. Period. Nothing else works like the OEM parts because they aren't OEM parts.
Sent from my GT-N8013 using XDA Premium HD app
Click to expand...
Click to collapse
Ok i will buy new cabLe and note its olny the cable that is broken also any chance samsung might send a new one im still under warrenty and is there any chargeing habbets i can get it in to like drain then charge and drain and charge or something like that to reset the battery'S memory? Or is it diffrent
Commander_Shran said:
Thanks but how can a cable make all the difference i managed to charge off my old one its just got exposed wires and it still drains when i use it
Click to expand...
Click to collapse
The wiring on the OEM cable is somehow different than most cheap cable.
I'm experimenting by buying a 3M long "cheap" N8000 cable on eBay, may be it can help (delivery time is VERY long )
Commander_Shran said:
Ok i will buy new cabLe and note its olny the cable that is broken also any chance samsung might send a new one im still under warrenty and is there any chargeing habbets i can get it in to like drain then charge and drain and charge or something like that to reset the battery'S memory? Or is it diffrent
Click to expand...
Click to collapse
What ROM are you using?
Stock or Custom?
Rooted or not?
If you are Rooted (Stock or Custom) you can use Battery Calibration app to erase batterystats.bin to calibrate your battery percentage which are needed if you change ROM.
Commander_Shran said:
Well actually when-ever I turn it off it doesent charge much and if I restart it the battery stays the same but over the last few days ive noticed something weird when its on chatge and I play a game it drops about 20-30% but when its not on charge and on battery it drops by about 5-6% could the charger be draining it? also I have a new new cable its generic (IM NOT PAYING $60 FOR A CHARGER CABLE) and there is no difference still does the weird charging thing also I tried the old cable and still does the same thing the olny thing wrong with the old cable is that the wires where exposed so I dident want to use it just incase it broke
THanks -Commander_Shran
Click to expand...
Click to collapse
$60 just for a cable? Really? I live in the UK and I bought a whole new charger (official Samsung one, too, including a cable) for about £12 on amazon. Just go to Amazon and replace the charger, it sounds like it'll be cheaper than just the cable (probably 15-20 USD or maybe 30-35 AUD, I'm not sure what the rate is and where you live ) and if it is a charger related issue that'll be fixed too.
Just so you know, I bought the 'travel charger' (the white one) and it works perfectly. Supplies the same current and voltage, and it's a smaller unit, and cheaper! I'd just look into getting one of those.