Best battery upgrade

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Hi,

I would like to know what is the best battery upgrade. Sometimes i need to use my phone for geocashing for more than two days and it is very boring trying to find time for waiting for charging. So I'm looking for best solution like extended battery or something like that. Size is not important for me, but i want something quality. Can you help me please ?

Thanks

Since size isnt a problem, id say.. get the Mugen 3200mah battery.
The quality is good and it has almost twice the capacity of the original.

Official samsung 2000 mah is pretty good. I get about 30% more usage on a full charge.

http://forum.xda-developers.com/show....php?t=1649119

I bought a 9.99 3000mah battery from Ebay. Cut a hole in the back of my cover so it would fit. Anyway I'm getting over 36 hours between charge with moderate use. Atm I'm on 55% battery and I'm on 18 hours 16min. Data on. Sync on. half brightness

Sent from my GT-I9100 using XDA

Maybe this one can help you.
Both case and battery, seems convenient to take with

http://www.tinydeal.com/p-pxqelv-p-55229.html

thanks a lot for you ansvers

I run ICS with the samsung 2000Amh battery .. I get up to almost 3 days with 1 single charge and about 30% usage (calls and msg and whatsapp)

ICS alone is worth alot in getting the battery juice up..

I have just bought this 2600 mAh battery, has anyone had this, or one similar? any good or bad comment on it?

http://www.flagshipfones.co.uk/batte...smi9100hl.html

I'm always afraid of buying cheap batteries because I always hear they might explode...