Hey guys! I have charging issue with my office laptop. I think it's at least a 2 year old laptop with windows 8.1 installed on it. Still it used to get about 60-90 minutes of battery backup until recently. I rarely used them on battery as I always connect it to a power source while working. But battery backup is always a good thing to have, just in case a situation arise. Recently, I noticed that laptop is not charging on the http://www.staticon.ca/category/industrial-ac-power-products]Staticon stativolt UPS system at the office[/URL]. It shows not charging. I tried a direct power source and it's working. I tried charging another laptop on the UPS and it's working. So I am confused about where the problem actually lies. I would like to solve this issue, because UPS is the most accessible power source for me at the office. I would like some advice about this issue and how to solve it.