How should one care about UPS (do maintenance of UPS) for a home computer?
I am asking because after one case where UPS was discharged fully (till it was empty), it now does not hold the power: it provides power from battery only for about a few minutes, and it doesn't give 'low battery' warning as it used to.
The UPS in question is Hantol HU1000, and the user's guide consist of 4 page leaflet in Engrish. It is written there "charge the mattery every 3 months regularly" (which I didn't do), but does not explain how to do it.