This thing has given me almost no problems. Not with the battery or the performance. The only real downside to this thing is the way the guards attach is a little flimsy. There was a time when the guard came off on me but with proper technique you can sort of avoid this from happening for the most part. The guard combs could maybe be a little thicker and rounded out so they're not as jagged, but it's not causing major discomfort or anything. See if you can improve the guards. I've had this for a couple years now and it still holds charge fine and it came with a big travel case and a zero blade. I'm not sure if I ordered some kind of special bundle or ordered all this stuff separately, but mine came with those 2 things and a charging stand. You don't see that stuff in the photos and now I'm wondering if I ordered it all separate.
It works good on your crotch with the ceramic blade just dial the blade spacing back a bit.
Works fine on body hair mine is thick and there's lots of it, no issues.
Zero blade gives you a close enough head shave where you can be lazy and sort of skip the razor.
The biggest downside to this trimmer is using the guards for beard trimming. However the included guards still function and you may not even have many issues with it really.
Whenever this thing just stops working it would be cool to see an even newer version that's even better.