[aprssig] battery enclosure.
wa2mct at mearle.com
Sun Apr 24 19:04:51 CDT 2005
>cost an arm and a leg, it's a commercial version with some
>beasts in there. Where would you find a wheelchair gel cell for that low
I've found the cheap ones are pulls. For instance, some folks replace UPS
batteries before they fail.
I evaluate batteries by checking the "new" guaranteed price at a local
electronics place, then the Graybar site, and then the Digikey site.
This gives me the "real" price.
If I can buy batteries significantly less, that's OK - I just figure they
won't last as long (months-wise).
For instance, in a previous job, we found batteries would fail between
months 18-20 in our (non-ups) application. So we changed them at 14-15
months. Someone buying the surplus ones could get 3-4 months use before
Likewise, wheel chair batteries. They are probably changed, before they
"strand" the owner of a power chair or scooter.
Putting a bigger battery (amp hour wise) than original won't hurt a UPS,
generally. However, when discharged by a power-fail event, it will take
proportionally longer to recharge.
) ) de WA2MCT Mark
( ( Echolink 99190 Grid Square EL17HQ
) ) You will be assimilated... oooh, coffee!!
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