Posted by
Lynn W. Taylor, WB6UUT-2 on
Sep 01, 2017; 3:16am
URL: http://elecraft.85.s1.nabble.com/Wattage-Draw-K3S-100-vs-KPA500-KAT500-for-UPS-tp7633842p7633941.html
It's not a bad design goal if you can plan on only 1 or 2 outages per
year, if that. Probably not too bad if the generator kicks in and you
only abuse the batteries for a few minutes.
My observation was that the big APC units charged at about half the
discharge rate, so yeah, charging too fast, but the discharge did more
harm than charging.
I was a 16 year old kid working his first real job in an auto parts
store just after cars switched from 6v to 12v. We could order 8 volt
lead-acid batteries, and I always thought that 6+8 was 14.....
73 - Lynn
On 8/31/2017 2:53 PM, Jim Brown wrote:
> Second, a local computer guru, AE6KS, has observed that most UPS mfrs
> charge batteries at too fast a rate for good battery life. The objective
> is to have the unit ready to do it all again if power drops, then
> returns, then drops again. This intentional design goal kills batteries
> pretty quickly.
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