Got this battery mid-December 2011. It appears the seller has changed, so hard to know if from the exact same supplier now. Parts sourcing & production tend to change quickly these days.My original battery would initially last a whole week (with very minimal talk/use, turned off at night), but now this supposedly 'new' battery (with a 6 yr old date-stamp = very troubling?) lasts only 2~3 days with same very minimal use, turned off every night.I give it 3 stars because it was so super-cheap, only $2.50 with free shipping, so didn't expect much.Btw, I put this battery through the rec'd 3 full charge/discharge cycles when first got it, but didn't seem to have much impact on the duration of a full charge..maybe adding 1/2 day's worth of extra charge by the 3rd cycle.