On 10/24/2014 05:48 PM, John Andersen wrote:
On 10/24/2014 3:38 AM, ellanios82 wrote:
Hello List,
- recently my UPS 12 volt battery has given-up the ghost and died.
Due location it is not easy to get exact correct replacement UPS Battery.
- could someone be so kind to advise :
is it safely possible to replace dead battery with a 12 volt jelly Car Battery ?
thanks regards ellan
I've done this in the past. In fact, many UPS units come with external connectors for 12 volt batteries.
Lead acid 12 volts (or 6volt batteries in series) all charge pretty much the same, and they all use the same charging chips to detect full state. You want to make sure the charge circuit drops to trickle charge voltage when the gel batteries are full. The best way to do this is make sure the Gel is charged fully before hooking it up and use a meter to see that the charger drops to trickle shortly there after.
So as long as we are talking lead-acid, gel batteries are the same as wet. Motorcycle batteries are often used for this when OEM batteries aren't available.
Also google the model number on the original batteries. You might just find it is generic, and not specific in any way to UPS use. Take that battery to some place that sells batteries, for cars or motorcycles.
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