Question about Goal Zero Yeti 500X

the question of how many mAH you get out of it... depends on the voltage. At 5V, that would be approx. 100AH or 100,000mAH (without losses due to voltage conversion).

the formula for this is: mAH = 1000 × watt-hours / volts

so e.g. 505WH / 5 = 101AH

The Goal Zero Yeti 500x fulfils its characteristics very well. Charging with max. 22 V, I did not consider this at the beginning and connected my two 12 V collectors in series, which then gave up to 39 V open-circuit voltage; the input circuit of the Yeti automatically switched off and therefore did not charge. Therefore: 12 V collectors must be connected in parallel!
Greetings Werner Frey