![]() Their verbiage is “If you use a power adapter that is lower in wattage than the adapter that came with your Mac, it won’t provide enough power to your computer.”īut guess what? I can charge it at 18W using the PowerCore Essential 20000 PD that linked above. Apple says that it requires a minimum 30W charger. So all that you get when you use a faster charger is just that, faster charging, but a slower one is still capable of charging it or slow the discharging is you look at lower cost.Ī Powerbank is with you, so you could consider connecting a 18W, 27W, or a 45W earlier and accept a slower recharge in return for a lower cost. ![]() So there is a trade-off, when you factor cost. And how busy you use the MBP too alters for an 18W to slow discharge, 30W less slow discharge. A 30W faster, 45W even faster, 60W even faster. So if you push 18W, about 12W-15W gets in, and so on average, 18W powerbank will slowly recharge you MBP. To get 6W in past the electronics in the MBP needs at least 9W. ![]() ![]() There is a cost / size / performance trade-off.Ī MBP has a typical battery life of 9 hours and a battery of 54.5Wh, so it is consuming on average about 6W. If any say I am I wrong I’ll edit to correct.Ī MBP will charge from 18W upwards to 60W. Is correct in so far it is the fastest charger, but it was not your question, what is capable.Ĭaveat: I do not own your MBP, I am just using public information, so before purchase put more effort in on research it will actually work, do not treat my words as proven facts.
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