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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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recelling lithium packs
I wasn't going to short them.
I was considering discharging them further with a resistor. However, it appears that further discharge runs the risk of damaging the cells. I'm going to skip the project for now, because I don't have a welder. "Jerry G." wrote in message ... DO NOT short or discharge these batteries even when working with them. Only when shorted or directly across a shorted load are they dangerous. Discharging these batteries to a low level is not very good for them! Only their normal amount of discharge during use is acceptable, and they should be recharged soon after. Even when these batteries are normally discharged, they can put out enough current to cause burns, or flame. This is why proper practice is required when working with these types of batteries. -- Greetings, Jerry Greenberg GLG Technologies GLG ============================================== WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm Instruments http://www.zoom-one.com/glgtech.htm ============================================== "Robert Morein" wrote in message ... I have good cells I can use to refurbish a lithium pack for my Fujitsu portable. I have cut open the pack, and can wire in identical replacements. Since these cells are dangerous, I discharged them to 0% in my laptop. They still read 9.7V (three 3.6V pairs of cells in series). I understand that at this level of charge, they are still somewhat dangerous. But I've also read that discharging the cells to 0V permanently damages them. I would appreciate any specific information available on the correct level of discharge for cells which are being handled in the process of installation. |
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