Elementary questions about electronics :: Long term storage of camera batteries


	Long term storage of camera batteries My camera uses AA size 1.25v nickel metal hydride batteries and I've just had a set die on me. (holds no charge). If I only use the camera every few months or so, what is the best way to store them so they won't degrade? Should I leave them full charged, drained or partially drained? I have the same question for my camcorder which uses large Lithium-ion batteries. Thanks, Graham "Grey" <graha@btinternet.com> wrote in message news:H6SdnY077O9MfKPbnZ2dnUVZ8sylnZ2d@bt.com... > My camera uses AA size 1.25v nickel metal hydride batteries and I've just > had a set die on me. (holds no charge). If I only use the camera every few > months or so, what is the best way to store them so they won't degrade? > Should I leave them full charged, drained or partially drained? > I have the same question for my camcorder which uses large Lithium-ion > batteries. > Thanks, > Graham Maybe there is some helpful info here: http://is.med.ohio-state.edu/policies/battery.htm -----------------------------------------------Reply----------------------------------------------- "Grey" <graha@btinternet.com> wrote in message news:H6SdnY077O9MfKPbnZ2dnUVZ8sylnZ2d@bt.com... > My camera uses AA size 1.25v nickel metal hydride batteries and I've just > had a set die on me. (holds no charge). If I only use the camera every few > months or so, what is the best way to store them so they won't degrade? > Should I leave them full charged, drained or partially drained? > I have the same question for my camcorder which uses large Lithium-ion > batteries. > Thanks, > Graham Energizers are particularily bad about this. They are great for many months and then puke. The Rayovac Hybrid (Walmart...look for the rebate) and the Sony Eneloop are a different NiMH technology that maintain their charge. They have a lower mAh rating but you will never notice because the self-discharge rate is so low. Store them charged. I can't help you with the LiIon. ; ) -----------------------------------------------Reply----------------------------------------------- > My camera uses AA size 1.25v nickel metal hydride batteries and I've just > had a set die on me. (holds no charge). If I only use the camera every few > months or so, what is the best way to store them so they won't degrade? > Should I leave them full charged, drained or partially drained? > I have the same question for my camcorder which uses large Lithium-ion > batteries. > Thanks, > Graham I've cross-posted this to sci.chem.electrochem.battery . Maybe someone there can answer your question. -- John English -----------------------------------------------Reply----------------------------------------------- John E. wrote: >> My camera uses AA size 1.25v nickel metal hydride batteries and I've just >> had a set die on me. (holds no charge). If I only use the camera every few >> months or so, what is the best way to store them so they won't degrade? >> Should I leave them full charged, drained or partially drained? >> I have the same question for my camcorder which uses large Lithium-ion >> batteries. >> Thanks, >> Graham > I've cross-posted this to sci.chem.electrochem.battery . Maybe someone there > can answer your question. Try the new Sanyo Eneloop NiMH cells. They are supposed to have a much slower self discharge rate. Ted -----------------------------------------------Reply----------------------------------------------- On 7 May, 09:22, "Grey" <graha@btinternet.com> wrote: > My camera uses AA size 1.25v nickel metal hydride batteries and I've just > had a set die on me. (holds no charge). If I only use the camera every few > months or so, what is the best way to store them so they won't degrade? > Should I leave them full charged, drained or partially drained? > I have the same question for my camcorder which uses large Lithium-ion > batteries. > Thanks, > Graham I would simply recharge them maybe once per month. You could have been unlucky and just bought poor batteries. I rarely use my camera and have no problems with rechargeable batteries. www.ckp-railways.talktalk.net/pcbcad21.htm -----------------------------------------------Reply----------------------------------------------- John E. wrote: >> My camera uses AA size 1.25v nickel metal hydride batteries and I've just >> had a set die on me. (holds no charge). If I only use the camera every few >> months or so, what is the best way to store them so they won't degrade? >> Should I leave them full charged, drained or partially drained? >> I have the same question for my camcorder which uses large Lithium-ion >> batteries. >> Thanks, >> Graham > I've cross-posted this to sci.chem.electrochem.battery . Maybe someone there > can answer your question. Take a look at http://www.batteryuniversity.com/index.htm for all sorts of useful information. I have found that my batteries seem to store best as follows: NiCd fully discharged NiMH Full charge, but not kept cooking Li-ion &c 25% charge with occasional small top-ups to no more than 30% In all cases cooler is better, but not frozen. Manufacturers do seem to overestimate cycle life, especially in small Li-ion in high load duties. -----------------------------------------------Reply----------------------------------------------- In article <0001HW.C265FEF70139C7F0F0305@news.sf.sbcglobal.net>, incogn@yahoo.com wrote: >> My camera uses AA size 1.25v nickel metal hydride batteries and I've just >> had a set die on me. (holds no charge). If I only use the camera every few >> months or so, what is the best way to store them so they won't degrade? >> Should I leave them full charged, drained or partially drained? >> I have the same question for my camcorder which uses large Lithium-ion >> batteries. >> Thanks, >> Graham >I've cross-posted this to sci.chem.electrochem.battery . Maybe someone there >can answer your question. I would just charge before use. Keep a set of NON rechargable Lithium backups. greg -----------------------------------------------Reply----------------------------------------------- Rayovac Hybrid or Sony Eneloop. They hold their charge, no need to charge before use. They won't all of a sudden "go bad". - Hide quoted text - > I would simply recharge them maybe once per month. > You could have been unlucky and just bought poor batteries. > I rarely use my camera and have no problems with rechargeable > batteries. > www.ckp-railways.talktalk.net/pcbcad21.htm

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Elementary questions about electronics

Long term storage of camera batteries