I use it on max brightness, and I get about 6 hours.
Reviews say between 9.5 and 15.75 hours Google says up to 12 hours. I recently purchased an open box Pixelbook Go for $400. I’m gonna take this thread slightly off-topic. Also, if we’re streaming HD video, then the battery doesn’t seem to go up at all, but at least it does not drop. I got the screen on max brightness but not actively using the computer. In the last ~15 minutes, the Air went from 37% to 42%. 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. Just use a magsafe adapter with a sufficient power rating.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. TL DR power in is power out whatever you plug in.
#Correct macbook pro charger wattage mac#
Now if your USB-C hub is made so that it takes power directly from the magsafe your mac won't have to output that to the peripherals anyway. so normally power goes in runs through the mac and a part of it goes out the USB ports. The power normally charging your laptop is the exact same juice that comes out of the USB ports to power any peripheral devices. It does not matter if the power is slightly less passing through your USB-C port. This is why it's not recommended by apple I guess. This will indeed charge the computer, untill you ask for more juice (gaming, heavy workloads and the lot) then you will put a lot of pressure on your 60 watt magsafe to produce more that what it is rated at potentially harming it or the mac. "With that said, I've used my wife's 60 watt power adaptor with my MacBook Pro (15"), and even though it's lower than the recommend 87 watts, it does charge the computer."
#Correct macbook pro charger wattage full#
The "con" of not using the full 87-watt source is that it will simply not charge the battery as quickly. Running your computer at a lower wattage seems to be very common and typically not unsafe IF you use quality cables and chargers. I have no idea what the true engineering minimum spec for a 15-inch MPB is. I sometimes use the 13-inch MBP, 60-watt charger for travel use because it is smaller and lighter. I typically use a USB hub which only passes through 49 watts as you can see from my screenshot below. In my experience, if you have a genuine Apple 87W USB-C power adapter connected you will see the wattage displayed at 86 (On 15-inch MBP).
The AC Charger Information will tell you exactly the current status of the AC power supply. On the right side, Scroll Down until you see " AC Charger Information."
On the left side of the Hardware list, select " Power."Ĥ.
Click on small apple icon on the top left of your screen and then select " About This Mac."ģ. To see what power wattage the computer is actually receiving:ġ.
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