Re: Compaq R3000h UPS

["Malcolm" <malcolm@xxxxxxxxxxxx>]

Andy

it wouldn't start on battery.

Pulled battery tray out and across the two strings it was showing 12.2v on
both.  I then disconnected the cables and pulled the full tray out. With
the main cables disconnected the two strings were showing 19v.

I disconnected a couple of individual batteries and they were reading
consistently 2.5v.

So what does that tell us and what's my most cost effective solution?  :-)

Malcolm



--- In ukha_d@xxxxxxx, "Andy" <andywhitfield2002@...>
wrote:
>
> Hi
> Unplug it from the mains.
> See if it will start on batteries.  Press and hold the ON button for a
few seconds.  If you get a beep, keep holding the ON button for 2 or 3
seconds.
> If it doesn't start up, then undo the 4 screws holding the front
plastic panel on.  Pull forward but be careful of the cable between the
front panel and the main unit.
> Undo 2 screws holding in the battery tray and pull forward.  Sometimes
pulling the batt tray forward is easier said than done!!
> Measure the voltage on each battery string.  Make sure meter probe
does NOT touch the metal tray/casing and the positive batt connector at the
same time as this will short out the batts!!!!
> (The negative of the battery strings is connected to earth/metal
casing)
> Report back the voltage from each batt string.
>
> I have battery trays with working, if old, batts in stock.
> Plus over a hundred UPSs in stock.
>
> Regards
> Andy the UPS Man




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