My work UPS came complete but with the pre-installation step of opening it up and connecting the batteries. (There were two to go in series, as it happened.)
Pretty straightforward, yes; just take care not to short the terminals, lead-acids carry a lot of power. Maplin may well be a suitable local source of battery technology, as might http://www.vps-ups.co.uk/ . What you're looking for on the existing battery is its voltage (usually 12V or 24V) and its power rating (usually expressed in volt-amps, e.g. 800VA).
As a consumer, your local council ought to take old lead-acids for recycling; in Cambs they're accepted by the main recycling centres but you have to take them there yourself.
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Pretty straightforward, yes; just take care not to short the terminals, lead-acids carry a lot of power. Maplin may well be a suitable local source of battery technology, as might http://www.vps-ups.co.uk/ . What you're looking for on the existing battery is its voltage (usually 12V or 24V) and its power rating (usually expressed in volt-amps, e.g. 800VA).
As a consumer, your local council ought to take old lead-acids for recycling; in Cambs they're accepted by the main recycling centres but you have to take them there yourself.