The main thing with Grippa and Oliver is that they know these heaters inside out many suppliers know very little about them when you get talking,these heaters are very reliable any problems are usually down to battery issues but if you regularly charge them they are trouble free.
I’ve had mine switching off on me on and off a few months ago but it was down to an old van battery that should have been changed,Since changing it working like a dream again.
Also they are the only company I know that actually come out and service them and change things like burners etc on site,imagine being told you’ve got to take it back to someone like Pure Freedom 🤣🤣,get all the way up there and it’s a fuse.