Storm 9520 Powers Off and Battery Drain PLEASE HELP

[jamiewilson_8]

There is a very similar thread here but as I explain I have a brand new battery so is surely not a battery issue:

Will try to keep brief:

October 2011 - Returned my 18 month old Storm to Carphone Warehouse (UK) as screen was sticking in corners - they replaced for a new (or refurbished?) storm 2.
New phone worked fine for around 4 weeks, then began randomly powering off (when using different apps/making call/texting etc - in other words no apparent common cause) When rebooted the battery charge was significantly lower (as much as 98% down to 10%.

Returned phone again, was given another replacement (or refurb?) with exactly the same problem happening again! Driving me mad! Each time I have restored my data using BB Desktop software - I'm thinking it must be one of my installed apps causing the crashes? I know I could return this latest device but each time equates to around 2-3weeks without Smartphone so am very keen to explore other possibilities before giving up.

Any suggestions gratefully received!

[2xJ]

Check this thread. I had the same problem, though a replacement battery completely fixed my issue. However, IIRC in that thread some people continued to have the same problem despite a known good battery. Have you tried reinstalling/upgrading the firmware?