Alain, welcome to the forum. I would also recommend a visit to candlepowerforums.com. From what i have read over there Surefire rechargeables have occasional problems. Surefire does have good customer service, if you are having problems give them a call. What is nice about the surefires is that you can have the same light using rechargeable and lithiums. But if you want just a rechargeable light, go for a Streamlight. Every four or five years you will have to change the battery pack, that is all i have done to mine. And yes i own Surefires too, just not any of the rechargeables.