Lo,
At 19:02 07/03/2013, you wrote:
>On 07/03/13 18:26, Martin N wrote:
>>Lo,
>>
>>At 17:57 07/03/2013, you wrote:
>>>On Thursday 07 Mar 2013 15:24:55 Martin N wrote:
>>> > 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
>>>
>>>
>>>Martin,
>>>
>>>I have aquired a Belkin unit with very identical symptoms.
>>
>>Urgh this APC is to replace an old belkin 800VA unit that was badly designed.
>>You had to bend open a metal cage to insert a replacement battery.
>>Did it once and swore when the second battery
>>went i would just get a new UPS.
>>
>>> In my case one
>>>battery terminal had actually corroded and fallen off, so it was a pretty
>>>simple fault to find. Typically, the Lead acid
>>>batteries used will be 6Volt or
>>>12Volt, sometimes wired in series to give
>>>24Volts. Disconnect the battery(ies)
>>>and measure the voltage across them. If you
>>>are move than about two volts from
>>>the typical values above, it's likely that the battery is dead and needs
>>>replacement.
>>
>>Its 4.8V but they are not getting warm like i
>>would expect a dead battery to do.
>>IIRC.
>
>If you unplug the UPS for a few minutes, connect
>the multimeter across the battery then power it
>up, do you see the terminal voltage rise? If the
>charger is charging, I would expect to see that.
The battery is very well insulated and the only
contacts are with the captive cable plugging into a socket in the UPS.
There are no exposed terminals on the battery and
the socket is recessed so i cant get my probes down there.
Thanks for the ideas though
Martin N
Those who would give up essential Liberty, to
purchase a little temporary Safety, deserve neither Liberty nor Safety.
Benjamin Franklin (170690)
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