Manufacturer’s Description

Extended Battery w/Door for Samsung Galaxy S II Attain SGH-i777/i9100 (AT&T) (3.7VDC - 3500 mAh)Ready For Business Your Samsung Galaxy S II Attain SGH-i777/i9100 (AT&T) is a beastly device, but its ''standard issue'' battery doesn't quite cut it. Level the playing field with a cellular fuel source that can handle the super performance demanded by this media driven smartphone. Increase Usage By 95%! At 3500 mAh, this extended battery crams nearly 95% more multimedia possibilities into a similar-sized package. Now you can watch MORE HD video content, stream COUNTLESS jams from your music library and stay connected with friends and family LONGER. Included battery door cover accommodates slightly larger form factor.

The Specs

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