In article , Dennis Lee
Bieber  wrote:
> On Mon, 14 Aug 2017 21:14:18 -0400, rickman 
> declaimed the following:


> >UPS typically use SLA, sealed lead acid, batteries, I suppose
> >because of the cost.  Notice it is very hard to get capacity info
> >on most UPS units.  They

>  Lead acid typically works with cheaper charging circuits, and work
> well with a continuous float charge -- unlike NiCad/NiMH/Lithium
> rechargeable with their multistage charging cycles and warnings to
> remove them from the charger when they are "full". .

Don't modern charging systems for Lithium switch off after full charge
is reached - this is my understanding for devices like phones and
tablets but I guess may not be the case for UPS.

Richard

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