Apple 2016 macbook pro charge brick3/21/2024 Unofficially, I have read that people have had mixed results using non-USB-PD chargers to charge MacBooks. Officially that's the story, that a MacBook will only charge from a USB-PD power supply. This same 27 watt charger was able to charge the battery while the laptop (and I) slept. With some rather lightweight web surfing I didn't see the MacBook battery run down. Connecting a 12 watt USB power brick to my MacBook Pro will show in System Information as supplying power (at least that's what it looks like to me) but it does not show as charging the battery.ĭuring a power outage I was able to run my MacBook Pro from a 27 watt USB-C charger that was plugged into a portable power pack. A USB power brick that doesn't support USB-PD might supply power, which will slow the discharge from the battery, but it will not add charge to the battery. No USB power brick under 18 watts, at least none that I am aware of, supports USB-PD. Even then there may be other conditions that need to be met, such as voltage and current supplied. A 10 watt iPad charger will not charge a MacBook Pro because the MacBook Pro will only charge from a USB power supply that supports "USB Power Delivery" or USB-PD.
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