I am writing this post to see if anyone else out there is having battery problems out there. I am not trying to start a flame war or to discuss the high internal resistance of AA NiMtl batteries or 4 cell vs 5 cell in sailplanes. I think I am more concerned about old fashion quality control. About this time last year I purchased 36 - Sanyo 2700's. AA size. I purchased them mostly for my digital cameras (it used four at a time) and to make a couple packs for my sailplanes. I made a five cell pack for my Pike Perfect on 72 mhz. Several months later I crashed at Visalia, from total loss of control. I took a lot of heat because I was defending the JR 790 scan select receivers which was also flying in the Pike Perfect. Well I sold the crashed plane to Tor who did a very good job rebuilding it. Tor's second flight resulted in a loss of control and another crash. he gave me the battery to test and the test results really sucked. At 1/10t h C the batteries took a full charge. Anything more than that and they would only take about 800mah. The real down side was that the 5 cell pack fully discharged over night. While all this is going on, I still had 5 sets of 4 batteries for my digital camera. That way I would always have a fresh set of batteries. Every time I picked up a pack I charged just a couple of days ago, the camera would take a couple of pictures and the red battery dead symbol would pop up. These batteries, just 6 to 7 months old were self discharging in less than a couple of days. I use a Schulze isl 8-936g for my planes and several other charges for my cameras. I got so bad that I wound up throwing out the Sanyo 2700's and replacing them with intllect 2000's (4/5th A) or Sanyo Enlopes or other slow discharge ni-mtl batteries. So far so good. I tried using the enloops in my wireless mouse (I had given up on rechargeable batteries in this use because they would only last a couple of days). they worked great. Several months at a time before recharge. About the same amount of time I was getting with alkaline. Suddenly, a fresh set of Enloops died in the wireless mouse. One cell started the charger and the cell took a full charge. The other cell would not start the charger (I don't think the charger recognized a cell at all.) It would only take 600 mah before the charger would kick off. I really like the way the enloops hold their charge. They really do what they claim. But this failure less than two months after purchase has me a little worried. some research on line seems to indicate that there might be a quality control problem coming out of China in general, and not related to any particular brand. Is anyone else out there having problems with the newer, high capacity ni mtl cells with quick (over night) self discharge or a cell simply stop working? It has been interesting. Sherman Knight
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