Has anyone used an Eveready 9-volt rechargeable battery?greenspun.com : LUSENET : TimeBomb 2000 (Y2000) Preparation Forum : One Thread
I found an Eveready battery charger at Wal-mart. For the first time I also found 9-volt rechargeable batteries. We need these for our smoke detectors. They're also Eveready brand. Has anyone used this brand? Are they good enough to last for at least a year?
-- helen (email@example.com), September 11, 1999
Nine volt ni-cad rechargeables are reallly 7.2 volt batteries, and I don't like them. They work okay in some things, but for a lot of 9 volt items, their voltage is too low. Don't use rechargeables in smoke detectors, etc., because rechargeables gradually lose their charge (self-discharge) and your batteries in the smoke detector would be dead in a month or so, I think. Buy a few extra good quality 9 volt batteries with a long expiration date for smoke detectors.
However, nicads are great for flashlights that are used regularly so you notice when the batteries are low and can then take them out and recharge them. Also they work well in small portable radios, etc. I especially like to use AA size cells that can be recharge in an inexpensive solar battery charger that you can just set in the window sill. We always have a set or two charging, and a acouple sets in use and a set or two ready to use, fully charged. Coupled with a small flashlight with a white LED for a bulb, and you have years of light available-- not real bright, but very dependable.
-- Jim (firstname.lastname@example.org), September 13, 1999.