BB Torch :: Phone Won't Charge After Running Dead

My blackberry torch seems to be a bit faulty in some way at the min , I've recently purchased several batteries for the phone, all of which working perfectly when I leave the shop, when home I charge them up to full and use it as normal no problems. I continue to use the phone until it completely runs out of charge but when it comes to charging it again it shows a battery with a Red Cross through it and after reading other comments of just leaving it to charge I did that but nothing happened so went back to the shop they tested the battery only to find it completely unuseable and me having to buy a new one.