Thinking of getting 3rd party Battery? Battery not lasting very long?

[Metalligator]

DON'T!

Upon purchasing phone in May read the battery wasn't great so purchased a battery with 'higher capacity' off of ebay (1800mah).
Knowing a little electronics decided if it has more capacity it must be better?

I ran two batteries for a wHile and didn't really notice that much of a difference, never got a whole day out of the battery - not once. The phone wouldn't even last the night with all syncs off.

At a party lost the official samsung one so have been on the 'bigger' one for a few months. Recently the battery has really started to annoy me and was getting random restarts. Got fed up so turned lots off and uninstalled loads to no avail. I was getting random turn offs (not restarts) and could not replicate moving the battery round. Upgraded to cyanogenmod 9 and liked it and got slightly better battery but still issues.
Noticed that when I unplugged the charger the 'charge' instantly dropped to 93% so thought 'hmmm the battery may not be that great'

I ended up purchasing a new Official Samsung Battery, it came fully depleted, had to charge for 10min before could even turn phone on.
After charged used battery calibration app and unplugged, I have had mobile networks on all the time wifi about 80%, been playing music over bluetooth and browsing the web etc. currently on 23hours with 18% battery left.

Not quite sure how it's better than original battery, guessing it's the OS upgrade and changes I've made as the batteries degraded, but yeah I wouldn't recommend cheap batteries from overseas.

 

[GiggityGiggity]

I got an Anker 1900mAh battery from Amazon for my S2 after someone on the forums recommended it (it was under

 

[JSR84]

I bought a set of 1800mah batteries off E-Bay a while ago, the battery life on them sucks, but they work fine for a backup.

 

[vantiveman]

I got an extended battery (Samsung) from Amazon with capacity of 2000mah.
It comes with a different back that is only a tiny bit thicker and brings the back flush with the camera. It event still fits into my belt case with no problem.
Capacity is great and after a few full charges (off the mains adapter) it really performs well.
OK, I'm a light user, but after a full charge on a sunday afternoon, I didn't charge it again until thursday! However, to get this performance I always have my data and wireless turned off unless I need them.
Quick tip. To switch off data you don't need an APN manager, just push-hold the power button and then take the option to disconnect data.
Also, in the evenings, I usually have brightness down to around 60% or less.
Another tip. Dim the screen by sliding right to left across the top notification bar.
(Int Galaxy S2)

Al,

 

[shepo73]

I've also got the official Samsung extended battery. It does make the phone slightly thicker but I personally prefer how it feels. The battery life is also loads better.