In blog post “My Fridge & My Portable Power Station” I managed to get a maximum of 778 Wh out of my portable power station with a rated capacity of 1260 Wh.
Thinking that quite some power got lost in the AC inverter, I set out to measure the amount of power I can get with its 12V DC output.
I configured my electronic load to draw 5 A:
The portable power station displayed 65 W output:
And I only got 673 Wh out of it:
That’s even worse than for 230V with the inverter: 53% of the rated capacity.
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Didier Stevens 