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Original thread:
Post 14 made on Monday March 26, 2007 at 10:55
Feslope
Long Time Member
Joined:
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November 2006
48
Nimh rechargeables tend to self discharge pretty quick, usually they are pretty dead in 45-60 days. For high drain uses like camera and flash they are best charged within a day or two of use. There are some new ones on the market now that advertise low self discharge, retaining as much as 85% at the end of a year. A camera store will have "Eneloops" by Sanyo in AA and AAA. A more recent and readily available brand are "Hybrio" by Ray-O-Vac avail at Walmart and most other places that sell rechargeables.

Alkaline batteries typically start at about 1.55 volts and your remote will typically work down to about 1.1 volts. The alkaline drop will be gradual over time. When you put a big drain on an alkailine cell it pulls the voltage way down to like maybe 1.2-1.3 volts. A NIMH rechargeable cell fully charged may read as high as 1.42 volts but will very quickly settle to 1.25 to 1.30 volts. When you put a big drain on an NIMH there is very little voltage drop, they have put out essentially all their useable power when they get to 1.1 volts.

Bottom line here is, with self discharge regular NIMH cells should not last any longer than about 30-45 days. The new low discharge NIMH cells might last a lot longer.


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