Bros... I bought 4 * Powerex 2500 n 4 * Sanyo 2500 at the same time ard June last year. Charged them within the same day but after a week my Powerex completely cannot power up my camera but when swtich to Sanyo. No problem so I guess the Powerex spoilt liao... Can anyone advice me if there any warranty for Powerex? I bought fr Eastgear, where can I change my faulty batteries if have warranty? Thanks.