I just picked up a VTOMAN Jump1000 power station from Amazon. I charged it yesterday and used it last night for the first time. I powered my cpcp machine all night, and it only used about 5% of the stored energy. It takes about 7 hours to charge it from the wall outlet. I just ordered the solar panel set up direct from VTOMAN, they have a sale going on for the next few days, its even cheaper than Amazon, if you set up an account and use the $50 code. The panels charge it in about 8-12 hours from a dead start. But if you are only topping it off, it should be a lot quicker. I will update this post if I find any issues with it. I did use a 12 volt adapter for the cpap because it is a lot more efficient, I found that out from a youtube video. It does not have to use the AC inverter which burns extra power.