[rescue] [Slightly OT] Smart-UPS 1400 Battery replacement

[Greg A. Woods]

[ On Friday, August 3, 2001 at 08:54:31 (-0400), James Fogg wrote: ]
> Subject: Re: [rescue] [Slightly OT] Smart-UPS 1400 Battery replacement
>
> Assuming they are near discharge now....
> 
> 1) disconnect all the wires from the batts.
> 2) measure the voltage on each batt, they should all be within 1/4 volt of the
> average of all their voltages (if not, deadsville).
> 3) if any batt is below .5 volt per cell, then the batts are gone. each cell is
> good for 1.5v, so if its a 6v batt, then thats 5 cells.
> 4) re-connect and charge for two days.
> 5) place a dead load (resistive load, like a bunch of light bulbs) on the ups.
> Pull the ups plug and see if the ups has decent output (measure it and watch
> the bulbs). This is a cheatin way of measuring load capacity.
> 6) disconnect batts and measure for equality like in step 2.

once "charged" what identifies a bad battery?  Just being out-of-line
with the others?

-- 
							Greg A. Woods

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