Develop Bugs

External Secondary Battery Charger?

I had a great external secondary battery charger for my Nexus One. I would NEVER have to plug in the device, only swap batteries throughout the day. It was a perfect system and the charger was only $5 off ebay.
Mytouch 4G doesn't seem to have any yet for sale on ebay. If anyone finds an external battery charger for sale for this phone, please let me know.

I'm also very interested in this and had the same setup for my nexus. Did you just buy oem batteries or did you have luck with any after market options?

at first I tried a battery off ebay that promised to be "just as good as factory" for only $8.
It did not hold a charge at all. I returned it for a full refund.
I bought a $25 dollar factory battery back when the nexus one online store was open and that worked perfectly, of course.
For getting my sister the same battery swap setup on her Mytouch slide, I just ordered an extra battery directly from tmobile, but they charged $50 for the thing
I'm not sure what an extra battery for a Mytouch 4g costs, but probably it will be close to the $50 the mytouch slide battery was if you get it from tmobile.
Ordering from them is probably overpaying, but after my bad experience with nexus one ebay batteries, I thought the extra money was worth some peace of mind. Because I'll tell ya: you cannot tell the difference between a cheap imitation battery and the real thing just by looking at them. They are identical aside from the horrible charge capacity.

jdallac said:
They are identical aside from the horrible charge capacity.
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YMMV, I got 2 of them for my G1 about a year ago, each would last about the same as the battery that came with the phone. I drowned one when I was swapping them on a rocking boat lol but the other is still working like a champ.

In my g1 I had a seido innocell that packed approx 20% more charge into the same size package.... the batteries are pricey, but worth it to me...
Sent from my HTC Glacier using XDA App

they are for sale on ebay today

Where to get 1800mAh OEM Batteries that FIT!

Credit goes to Rakeshchn for asking if this would even work, and for the link to the first battery for sale
Okay guys, there's a thread here about how the Galaxy S II Epic 4G Touch battery might fit the Vibrant with no need for a new back cover. The rumor is true. I have two of these batteries, and have verified that mine are legit, and they fit perfectly. My phone actually has never lasted so long on a single charge since I switched to CM7.1, and I won't be going back to any battery of less capacity for as long as I own my Vibrant!
Here is the official page for the battery from Samsung
Here is the website I purchased from.
NOTE: I have removed the note about my batteries being fakes because after some research I have determined that Samsung actually has no idea what a serial number is, and is actually putting batch numbers on their batteries, so having the same number isn't a bad sign.
Here is the official page for the Extra Battery plus Charger from Samsung
Here is a website that seems to have the battery charger combo in stock and is selling it for $10 cheaper than Samsung MSRP. I DON'T vouch for them yet, because I haven't purchased from them ever.
Enjoy!

Dam, I wish it wasn't backordered on that website you ordered from. Im not gonna be ordering the one with the charger well since I don't need a charger and I'd rather spend that money on other things as I have wasted soo much on this phone already. I wonder when are thy gonna have more of just the battery in stock. A little better battery life on my galaxy s 4g would be great.
Sent from my SGH-T959V using XDA App

There's a few sellers on Amazon with them in stock, but they're a few dollars more than mobilecity. If you're in a rush for one, you could try there. Just search Epic 4g Touch Battery.
Sent from my rough sketch of a Vibrant on a brick.

Droidificator said:
There's a few sellers on Amazon with them in stock, but they're a few dollars more than mobilecity. If you're in a rush for one, you could try there. Just search Epic 4g Touch Battery.
Sent from my rough sketch of a Vibrant on a brick.
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Yeah I can try there. Ehh, ill just wait until these get back in stock or someone finds another legit seller because somethimes the sellers can be really sketchy on amazon.
Sent from my SGH-T959V using XDA App

If u do find that battery can i have your old one mines is shoot
Sent from my SGH-T959 using XDA App

Great find, thanks! Ordered 1.
Seems like there is a 2000mAh battery -> http://www.amazon.com/GTMax-Standar...C2AK/ref=sr_1_5?ie=UTF8&qid=1319656665&sr=8-5

Good rule of thumb, Shaolin. If it seems to good to be true, it probably is.
Also, that battery won't fit in our phones. It's for the other models of the Galaxy S, not the Epic 4G Touch.

http://www.ebay.com.sg/itm/200625287516#ht_2218wt_1139
Check out this one. Not sure if anyone has tried it before.
But I have just ordered the 1800mah one

I received my 1800 battery a few days ago from mobile city, where OP vouched for. I'm getting significantly more run time with it. I'm a heavy user and the difference is very noticeable.

nhc said:
http://www.ebay.com.sg/itm/200625287516#ht_2218wt_1139
Check out this one. Not sure if anyone has tried it before.
But I have just ordered the 1800mah one
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I only saw the 2430mAh one, and this sounds a little too good to be true. I guess if it at least gets 1900mAh it could be worth it. I am getting close to 24hrs from the Epic Touch battery now, though, and I have 2 of them, and a wall charger, so I am never worried about running out of juice anymore.
Sent from my rough sketch of a Vibrant on a brick.

I noticed that my two 1800mAh batteries have the same serial number, so if anyone else purchased from mobilecityonline.com and cares to check, mine are both TH1B907FS/5-B
Sorry to anyone who bought these on my recommendation for leading you astray with this. I emailed mobilecityonline.com, and will let you know what I hear back if anything. And have updated OP.

Fake or no fake. I am getting way better battery life from mine. Ill take fakes like this all day long!

I heard back from mobilecityonline.com and they said to call Samsung about the sn, but they only sold genuine OEM batteries. I still haven't had a chance to dig deeper, but I agree, the better life is worth the $20 all day long even if it is a fake.
Sent from my rough sketch of a Vibrant on a brick.

I wonder how do the anker 1800 epic touch batteries compare to these. They are a little cheaper than from what I've heard.
Sent from my SGH-T959V using XDA App

I read somewhere people aren't getting as long out of them, but are happy enough since they're so cheap.
Unfortunately I still haven't contacted Samsung about these "OEM" batteries...
Sent from my rough sketch of a Vibrant on a brick.

I just bought 2 off of Amazon that are just the OEM battery for $23.20 each.

icy56 said:
I wonder how do the anker 1800 epic touch batteries compare to these. They are a little cheaper than from what I've heard.
Sent from my SGH-T959V using XDA App
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I having opposite results. The Anker last a hell of alot longer than this fake OEM with the same s/n. The OEM/fake is no better than my standard 1500.
Sent from my SGH-I897 using xda premium

Just installed 1800 epic 4g battery....but phone still says I have 1500..how can I fix it....already cleared battery stats
Sent from my T959 using Tapatalk

Droidificator said:
I noticed that my two 1800mAh batteries have the same serial number, so if anyone else purchased from mobilecityonline.com and cares to check, mine are both TH1B907FS/5-B
Sorry to anyone who bought these on my recommendation for leading you astray with this. I emailed mobilecityonline.com, and will let you know what I hear back if anything. And have updated OP.
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dammm...i also have same serial

mohitmoudgil said:
Just installed 1800 epic 4g battery....but phone still says I have 1500..how can I fix it....already cleared battery stats
Sent from my T959 using Tapatalk
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Are you using Norton Utilities to determine battery capacity? It doesn't matter how big or small your battery is, Norton will always say 1500.
Sent from my rough sketch of a Vibrant on a brick.

Replacement Battery

Just curious what others have found quality wise with replacement batteries. I've been looking on eBay and have come across a few extremely cheap ones and some mid priced ones as well. Any insight would be appreciated!
Sent from my PC36100 using XDA App

I ordered one of these batteries a few days ago and I'm waiting for it to arrive. I read in another thread that the guy liked it and it worked good so we will see...
Edit: got battery now and so far so good. Way better compared to stock. For the price u can't go wrong. Worst case scenario I'm out 15 bucks if it malfunctions. Fyi using SBC kernel with it.

ebtek220 said:
Just curious what others have found quality wise with replacement batteries. I've been looking on eBay and have come across a few extremely cheap ones and some mid priced ones as well. Any insight would be appreciated!
Sent from my PC36100 using XDA App
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I've bought several 1800mAh and 1500 mAh aftermarket batteries from eBay and they have out-performed my stock batteries (they're all made in China, anyway). Why pay $40 for one battery at Sprint when you can buy 6-8 from eBay for the same price. Just my 2 cents worth.......

I bought three aftermarket 1500s and an external charger (it was a single purchase) for about $11 with free shipping.
They're definitely cheap and they shipped from Hong Kong. They don't output their temperature or other information that is read by battery monitoring apps, but what I gained was definitely worth the price.
I haven't seen a difference in battery life between my stock battery and my aftermarket batteries. I've used sbc kernels with them without issues, though I rarely charge through the phone.
I couldn't justify spending 4 times the price or more for a replacement or extended battery. Just keep your batteries charged via an external charger & you'll never have to worry about plugging your phone in or cutting back to save battery life.
Sent from my Evo + MIUI using Tapatalk!

Got 4 oem batteries for $21 shipped from seller "the_oem_spot"
Sent from my hTc Evo!

I would highly recomend seidio they are rated the best as far as listed mah verses actual mah . They sell them online and at bestbuy. Somewhere on this site is a link to a guy who tests a lot of China Japan batteries for actual mah and price per mah. I use seidio 3500 from bestbuy platinum but it cost 69.99. It has 30days warr but it takes almost that much time just to get the phone used to it. Also, its true that that mostly come from the same part of the world but the factory rates them on cell quality and price points them based on this factor. So i would argue that you get what you pay for.
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I agree with gentyle completely. I bought a seidio 3500mA battery and a replacement 1500mA from another company and I'll never go with anything else. The 3500 outperformed the others by 3 times even though it should technically have only a bit over doubled them.
Swyped from my synergized best friend

Bought a 3500 mA battery off ebay, for $15, it lasts the entire weekend with moderate use.
KJ

Legit battery seller?

Im looking to get some spare batteries. Ive browsed through amazon quite a bit. And any seller with good deals has barely any reviews if any.... Just wondering if anyone knew a legit place to pick up a few for decent price.

inkdup102586 said:
Im looking to get some spare batteries. Ive browsed through amazon quite a bit. And any seller with good deals has barely any reviews if any.... Just wondering if anyone knew a legit place to pick up a few for decent price.
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anker batteries are pretty solid.

I got some EzoPower 1800mah batteries from Amazon last month. 3 batteries and charger for under $15 shipped. So far so good with quality and battery life. I was going to get the Anker but they were out of stock so I tried these out.

Ankers are still in stock.
http://www.amazon.com/Anker-Batteri...8&sr=8-2&keywords=anker+battery+epic+4g+touch
http://www.amazon.com/Anker-1800mAh...9&sr=8-4&keywords=anker+battery+epic+4g+touch
Recommend you get the two battery + charger. Much better deal for $23.99 compared to the single battery for $15.99 .
I got mine when they were on sale for $9.99 .
Sweet battery, definitely is up there with how long it lasts. Daresay it's almost as long as when I had my phone when it was brand new with the fresh OEM battery.

someguyatx said:
I got some EzoPower 1800mah batteries from Amazon last month. 3 batteries and charger for under $15 shipped. So far so good with quality and battery life. I was going to get the Anker but they were out of stock so I tried these out.
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You know what seller you got them from?
Sent from my SPH-D710 using Tapatalk 2

lilotimz said:
Ankers are still in stock.
http://www.amazon.com/Anker-Batteri...8&sr=8-2&keywords=anker+battery+epic+4g+touch
http://www.amazon.com/Anker-1800mAh...9&sr=8-4&keywords=anker+battery+epic+4g+touch
Recommend you get the two battery + charger. Much better deal for $23.99 compared to the single battery for $15.99 .
I got mine when they were on sale for $9.99 .
Sweet battery, definitely is up there with how long it lasts. Daresay it's almost as long as when I had my phone when it was brand new with the fresh OEM battery.
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Thanks, I ordered them. I'll give them a run

I see you orderwd the Anker already but my Ezopower came from BlueMall seller on amazon. Shipped quickly.

Yea I ordered last night. Already shipped today
Sent from my SPH-D710 using Tapatalk 2

I ordered a used OEM ET4G battery from "MKK Group Inc", it was legit and works great, looks identical to my original OEM battery.
Went to order another, MKK were all out, so I ordered from "Moonlight Express". This battery was too "long" by a few millimetres, it wouldn't fit in the phone, well it maybe COULD fit, but I doubt it would come back out again...
Dunno what version of this device this one goes to, it's SN is THaB1130ZS/5-B, EB625152VA 1800mAh
My original OEMs are SN TH1BC19VS/5-B, EB625152VA 1800 mAh
&
SN TH1C321CS/5-B, EB625152VA 1800 mAh
Also I have 2 dead and bloated batteries with TH1BC15FS/5-B & TH1BB19XS/5-B, so I'm guessing the TH1 series is for our phones and the THa series is for some other slight variant.
That or it's a fake perhaps. In any case I'm returning it, and hoping MKK gets more in. Or maybe just get this: http://www.ebay.com/itm/2520mAh-Ext...-II-2-Epic-4G-Touch-D710-Sprint-/271104168282
Edit: Thanks for the tip someguyatx, I'll avoid that one. The 4100mAh Qcell extended battery I ended up getting from Amazon has been amazing.
About the Moonlight Express seller on Amazon- they have great customer service and immediately issued me a full refund, and they haven't even provided me with a shipping label yet. Impressive.
sent from my ET4G on Paranoid Android using XDA Premium HD in hybrid mode

Dont buy the 2520mah battery for 30 bucks. Its almost certainly a fake. There are several on ebay falsely advertised like this.

I ordered these at the end of January:
http://www.amazon.com/Anker-Batteries-SPH-D710-Cellular-Multi-purpose/dp/B005HBH1R2/
I got two batteries and the wall charger for $19 and change. Right now it says they're out of stock, but the seller was AnkerDirect. Seemed like a pretty good deal.
No problems whatsoever, and I actually use the wall charger more than I thought. I can rotate the batteries in and out and have a spare for the time being, and will give one to my wife when her battery starts spinning.

I bought an ec technology 1800mah from amazon for 7.99, i just got it yesterday feb 18th, the funny thing the battery was marked feb 1 2013, very fresh cells. So far battery life is steller, highly recommend ec technology.
Sent from my SPH-D710 using xda app-developers app

Thought I'd let you know I got my batteries today. Straight out of the box was at 63%. 4 hours later with mild use. Only down to 53%
Sent from my SPH-D710 using Tapatalk 2

I would watch what battery you
because most battery gives hardware problems like "Burning up the motherboard" as thats what happened when I bought my last battery. I forgot what it happened
but there was a day that it overheated my phone
And now my whole phone couldnt hold a proper battery charge and charge correctly because something got messed up, lucky i had a warranty as it replaced my phone for free.
Usually sprint told me to "Make sure you buy the battery that has *Samsung* Written in it" you know the stock ones?
Those I recommend getting. I always made sure i bought those and no problems with my phone for a year and 4 months of far

[Q] External Charger

Does anyone know where I can get an external charger for my extended batteries that I will receive next week? I looked on amazon, but I couldn't find any that seemed right.

Ask MiguelHogue. He had one.
Sent from my Slim E4GT using xda premium

H4rryTipp3r said:
Does anyone know where I can get an external charger for my extended batteries that I will receive next week? I looked on amazon, but I couldn't find any that seemed right.
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anker sells one on amazon.

I have a cheap external charger for regular batteries, works great and should be fine with the extended too.

someguyatx said:
I have a cheap external charger for regular batteries, works great and should be fine with the extended too.
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um. Maybe you want to tell the op where you got it since that was the point of his question.

Sorry I got mine on ebay its black and is unbranded. It has a light that is bright pink while charging and blue when done. It also has a usb port for charging with cable. Its all over ebay and amazon. Hope that helps.

calisro said:
um. Maybe you want to tell the op where you got it since that was the point of his question.
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I already linked him in the Qcell thread
sent from my ET4G on Paranoid Android using XDA Developers App in hybrid mode

H4rryTipp3r said:
Does anyone know where I can get an external charger for my extended batteries that I will receive next week? I looked on amazon, but I couldn't find any that seemed right.
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I don't see why the cheap eBay ones (~$5) wouldn't work with an extended battery. (The cutout/space for the battery is the same size/shape as the one in the back of the phone)
But, it's only a couple of bucks more to get a charger with 1 or 2 (regular-size) batteries... might as well get a couple of spares?

awoolf said:
I don't see why the cheap eBay ones (~$5) wouldn't work with an extended battery. (The cutout/space for the battery is the same size/shape as the one in the back of the phone)
But, it's only a couple of bucks more to get a charger with 1 or 2 (regular-size) batteries... might as well get a couple of spares?
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cheap chargers can fry your battery.

calisro said:
cheap chargers can fry your battery.
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I've been using mine for 6+ months, with no ill effects. (On both my Epic 4G and Epic 4G Touch - it's awesome that my backup phone uses the same size battery!)
Bought my cheap eBay charger for ~$10 with a "2200mAh" battery - I haven't noticed any longer life than my 1800mAh original. (It's probably that same "Chinese math" that gives us 4000W car audio amplifiers for $39.)
I have noticed that both batteries don't seem to be fully charged by this external charger - they show 100% when installed in my phone, but neither lasts quite as long compared to if they were charged in the phone. But, this is a small price to pay for having a (mostly) charged battery, ready to go at all times.
UPDATE: I bought some of the "Anker" brand batteries suggested in this thread, and they last a lot longer than the $4 ebay ones I was using previously. $20 for 2 good batteries + universal charger (Amazon) was worth it.

awoolf said:
I've been using mine for 6+ months, with no ill effects. (On both my Epic 4G and Epic 4G Touch - it's awesome that my backup phone uses the same size battery!)
Bought my cheap eBay charger for ~$10 with a "2200mAh" battery - I haven't noticed any longer life than my 1800mAh original. (It's probably that same "Chinese math" that gives us 4000W car audio amplifiers for $39.)
I have noticed that both batteries don't seem to be fully charged by this external charger - they show 100% when installed in my phone, but neither lasts quite as long compared to if they were charged in the phone. But, this is a small price to pay for having a (mostly) charged battery, ready to go at all times.
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you can buy two ankers with a charger on amazon for $20. Those are actually quality batteries. Small price to pay for actual proven batteries rather than the crap your getting on ebay.

calisro said:
Small price to pay for actual proven batteries rather than the crap your getting on ebay.
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I've purchased several non-OEM batteries (and chargers) from cheap Chinese sellers, and had zero problems. The only battery I've ever had fail was the original Samsung battery in my Epic 4G. (It's slightly "puffed", and doesn't hold much of a charge anymore.)

awoolf said:
I've purchased several non-OEM batteries (and chargers) from cheap Chinese sellers, and had zero problems. The only battery I've ever had fail was the original Samsung battery in my Epic 4G. (It's slightly "puffed", and doesn't hold much of a charge anymore.)
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UPDATE: My battery life was getting a little short, so I bought the Anker's suggested in this thread. The life is noticeably longer than my cheap eBay batteries. Not sure if they wore out sooner, or if they were poor to begin with. Either way, the ones you suggested last a lot longer. Thanks for the tip!