I have waited to review this. I'll firstly address the battery issue. Mine's been absolutely fine. I've had it for ten months and it's been idle for the last six. Just fired it up and it's showing about 90% full, still charges and everything. I say that because other reviewers have had issues with battery life.
I think if you need a scope, this is a great place to start.
I purchased the 50Mhz with generator.
The broad specs on this are very acceptable for general use, 50Mhz will do most things, the 125MSa/s sample rate is good enough for my use. And the frequency generator is an incredibly useful feature. Not to mention the multimeter, very handy.
If you don't own a scope, and you're curious. I would highly recommend the one I bought. I like the frequency generator for fault finding. I've mainly used this on vintage guitar amps. But I have also used it to diagnose injector signal issues in cars. Obviously just two channels, so you can only compare two cylinders at a time.
I have a four channel bench top oscilloscope, sampling at the standard 1GSa/s, but I haven't had cause to use it since getting this. It's so portable, does basic DMM functions too and is just good enough for most things I need. I guess my use is diagnostics and fault finding.
Fantastic value for money. If you're on the fence, I would recommend you just go for it. Wish we had kit like this fifteen years ago!