[time-nuts] Re: Help needed with a UPS for my GPSDO

[Tim Lister]

On Mon, Jun 26, 2023 at 11:17 AM Dave via time-nuts
<time-nuts at lists.febo.com> wrote:
>
> Hi, I managed to find two second hand UPS at a ham rally but neither had
> a battery pack in it
>
> One, an "APC backups-ups 400"  works well with a single 12V 7Ah sealed
> lead acid battery.
>
> The other, an "APC SMART-UPS 600" seems to have space for two batteries.
>
> I have found a manual for the "600" unit but it mentions nothing about
> the number of batteries or if they should be connected in series or
> parallel :-(
>
> Has anyone any experience of these ??
>
> Any help more than welcome.

The APC website has a battery selector tool which should tell you what
the right battery model is for the particular UPS:
https://www.apc.com/shop/us/en/tools/replacement-battery-selector?showAll=true

which should be worth a try.

Cheers,
Tim