Problem with extended HTC battery

[montarelonf]

I have an official HTC 1350mha extended battery. I put PDA to AC charger at 23:00 with 10% battery and at 8:00 it goes on charging and it haves 70% battery. If i let it charging, it finally reaches 100% but after 12 hours, more or less. I have tried with several plugs and several chargers.

Does anybody have the same problem? Which could be the problem? Is it possible that battery is wrong?

Thank you.

[artisticcheese]

Try resetting battery.
1. Completely discharge battery by using WiFi or something
2. Remove battery from phone, put it back.
3. Do NOT power up, connect power cord
4. Let it fully charge while phone is off (rotating light will stop)

[montarelonf]

Thank you. I am going to do it.