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My SB-910 needs repair
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<blockquote data-quote="WayneF" data-source="post: 568149" data-attributes="member: 12496"><p>Well, regular NiMH cells run down sitting on the shelf, due to self discharge. I guess you could think of it as internal leakage of electricity, it just disappears. Meaning, unused on the shelf, they will be seriously down in a few weeks, and dead in a couple of months, so they would not be good in a clock. Or in any long term use, thermometers, or in a flashlight stored for emergencies... whatever. They do work fine for photographers because we can recharge them before use, but photographers thinking of using them next Christmas will be surprised.</p><p></p><p>Eneloops are very greatly better at this (their property is low self discharge). Eneloop does say still 70% charge remaining after 5 years of storage, and likely very usable for casual flash use over several or many months. But not really the best idea in a clock due to any self discharge at all, it limits charge life. They won't last as long over a very long time. They might be fine any place where changing the batteries is no big deal, like say a wireless mouse, where Eneloops should last a year, and we don't have to buy more new batteries. So Eneloops might be a middle area, great for many things, but still, a clock does not sound right. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Alkalines have a very long shelf life, maybe 7 years, so that's a good thing. And clocks only draw the tiniest trickle of current, which is good for alkaline too. If they don't leak, they would be about ideal for a clock.</p><p></p><p> But flashes have an extreme high current demand (6 or 7 amps for the 2 or 3 seconds they are recyling), and rechargeables are built for that, but which is NOT good for alkalines, they are slower to recycle, and won't last as long.</p></blockquote><p></p>
[QUOTE="WayneF, post: 568149, member: 12496"] Well, regular NiMH cells run down sitting on the shelf, due to self discharge. I guess you could think of it as internal leakage of electricity, it just disappears. Meaning, unused on the shelf, they will be seriously down in a few weeks, and dead in a couple of months, so they would not be good in a clock. Or in any long term use, thermometers, or in a flashlight stored for emergencies... whatever. They do work fine for photographers because we can recharge them before use, but photographers thinking of using them next Christmas will be surprised. Eneloops are very greatly better at this (their property is low self discharge). Eneloop does say still 70% charge remaining after 5 years of storage, and likely very usable for casual flash use over several or many months. But not really the best idea in a clock due to any self discharge at all, it limits charge life. They won't last as long over a very long time. They might be fine any place where changing the batteries is no big deal, like say a wireless mouse, where Eneloops should last a year, and we don't have to buy more new batteries. So Eneloops might be a middle area, great for many things, but still, a clock does not sound right. :) Alkalines have a very long shelf life, maybe 7 years, so that's a good thing. And clocks only draw the tiniest trickle of current, which is good for alkaline too. If they don't leak, they would be about ideal for a clock. But flashes have an extreme high current demand (6 or 7 amps for the 2 or 3 seconds they are recyling), and rechargeables are built for that, but which is NOT good for alkalines, they are slower to recycle, and won't last as long. [/QUOTE]
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