I really like my 901 PT but have heard they dont last that long. I ordered a backup and brand new this one is terrible it barley hits. The PTs I have are from eastmall and are just a usb connector wired to a battery, nothing to charge. I dont see why these thing wouldnt last forever and I sure cant figure out why one would give a weak hit. Does anyone know where to get a good quality PT for a 901?