So recently I brought this Windows CE GPS with me from home as I wanted to play around with it. It is about 9 years old and still seems to work great. The one thing I'm worried about is the battery, which still holds a good charge. The battery doesn't look quite flat. It also doesn't look like a "normal" puffy soft pack Li-Po (see picture). I asked elsewhere online and apparently this thing is a bit risky to charge according to one random guy. I'm kinda skeptical as it doesn't look like other bloated cells I've seen. Should I continue using this as normal and leaving it unattended to charge like I did before I discovered this weird battery shape? The last thing I need is an unextinguishable fire in my dorm room...