Argh, didn't see this thread until now. Just bought NP400 battery from Eastgear for $34.95 - which is more expensive than for any other cams. It claimed to be 1800maH, but actually turned out to be around 1500maH according to my Maha charger. At this price it is better to go for the Sony original batt.
Yeah, what charger u use so power one? Can tell u the capacity rating?? I also want to buy this type...
Err... the EG batteries I bought are only 170 mAh... I bought them some time last year or may be this year from TK Foto in Shaw Towers...