Hello, everyone my BB curve 9380 is equipped with OS v7.1.0.746 and JM1 Battery.

Recently I saw the battery just draining, rapidly. After I charge my battery to full, say after 5 min, charge reduces to 98%.. 96% ..gradually withiin a few hours (1/2 Hrs) down to 35%..eventually it goes to 5% or 1 %.
and when i put to charge again, It takes ages to charge,
at times the battery just charges to 100%, after i disconnect It shows 70%.

I tried emptying the memory, card ; removed memory card. uninstalled all major apps, Switched off Data pack. Every damn thing but the same issues!

HELP!!! Help!!!