I think they sent me the original battery (well, their version of the original)... well, couldn't really tell because there was no label on the battery... but the battery was able to fit in the Blackberry with the original door.. so it must have been an original, and not extended one.. I think the "retaining" power was actually lower than the original RIM battery... so their product is not good.. their "extended" battery is probably the same as the original RIM... so you basically lose 25% by "overextending" the power... so the Seido's 2400 x 0.80 = 1920... and 1920 mAh is better than the original of 1400.. but not by much...
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