Originally Posted by
armygreywolf
Certainly do....test it, just to see if it works at all. Chances are the batteries are trash but a UPS that big is always worth reselling if you can.
I found that a lot of the batteries are still good. Most of the time there is a cutoff (say 15%) where when the batteries reach that level it will no longer attempt to charge them. If you throw them on a low amp charger overnight they come back to life. Of course, there often isn't a large market for small 12v used batteries. I often go through them and keep the good ones for personal use. If it is a UPS that you want to resell, I'd throw the batteries on a charger and you may at a minimum get it up and running so that it can be fully tested.
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