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4 ports with 2 amps, 2 amps, 1 amp, and 1 amp that can charge 4 phones respectively. How long will the battery continue to charge these phones, assuming they are pulling the largest load possible?

Based on my calculations

the battery will last for as long as: 5.619 hours. However, this number feels funny to me. I've simply added all the loads together and then divided it from 33,716 mAh (this number was gained by accounting for inefficiency in the output).

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    \$\begingroup\$ The Ah rating is probably for the internal 3.7 volt battery, not for the 5 volt output, so you need to divide by (5/3.7). Related: electronics.stackexchange.com/questions/245861/… \$\endgroup\$ – DoxyLover Jul 16 '16 at 1:14
  • \$\begingroup\$ The rating is correct I assure you. Click on the word "number" \$\endgroup\$ – tisaconundrum Jul 16 '16 at 2:25
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Battery is 185 Wh rated, which translates to 37 Ah (185 Watts x Hours = 185 Volts x Amps x Hours, 185 Volts x Amps x Hours/5 Volts = 37 Ah). Assuming the review is correct and the battery is 91% of rated capacity, that translates to 34 usable Ah. 34 Amps x Hours/6 Amps = 5.6 Hours.

So yes, you are correct.

NOTE: If it seems like the numbers are off (ex. 34/6 rounds to 5.7), that's because I rounded to 2 significant figures for the numbers I gave but kept all digits for the next steps of the calculations.

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