I'm very happy with my OUKITEL P2001 Pro Portable Power Station.
I've only had it for a short while, but during a planned power outage for maintenance work in our street, we were able to keep working for a few hours. We had lamps, a laptop and a 750-watt heater connected to the power station.
It clearly shows how much runtime is left, and it recharges quickly. Thanks to its handles, it's easy to lift and move around.