On 7 March 2013 15:24, Martin N <martin.n@???> wrote:
> Hello,
>
> I got a new but open boxed APC backup-ups rs 800 VA UPS off ebay.
>
> Plugging it in there are no light when holding the power button down.
> Measuring the voltage on the terminal plugs gives me 4.7V when it outputs
> 14V
> when fully charged.
>
> After an hours charge i get 4.8V but that could be corrosion on connectors
> or
> my cheapo multimeter.
>
> So if the UPS dead?
> battery dead?
>
> How long does the lead acid battery last in storage?
>
> Any advice on how i can test things further?
>
> thanks for your time
>
> Martin N
>
For a new UPS, the battery will arrive disconnected.
It is probably a old battery or a failed unit.
Do any lights light on the unit?
Is there any indication that power is getting to it?
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