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Reply to: USB-C and powering devices
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Previously on "USB-C and powering devices"
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It will charge fine, albeit slower, but bear in mind that if you're using your Macbook while charging it, it may charge slower or not at all, depending how hard you're running your machine at the time.
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Originally posted by DaveB View PostIt will work but at a slower rate, in thew same way that it does with phones. The USB Power Delivery standard allows the device being charged to negotiate the optimum power output with the charger. If the charger doesn't support that then the device defaults to a maximum safe power draw.
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Originally posted by SimonMac View PostMy new MBP charges via USB-C, it comes with a 60w adapter, as I usually have a few (one for home, one for the office and one to carry with me if I travel) I’ve been looking at Power Banks with Power Delivery so I have a portable source of power, but they only out put at 30w.
Checking the average input on my MBP it only rarely goes about 29.7w with the occasional spike to 45/50, if I power it from a 30w device could it cause any damage, or just charger slower?
Also I’m reading conflicting advice about cables, all seem to be ok for data transfer, but as a rule of thumb cheaper cables can’t do the full power transfer
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Ah, it would help if I read the question more closely!
Sorry, I can't help - it might work slowly. Going the other way is fine - I frequently charge my iPad Pro using ClientCo's Thinkpad power supply (65W)
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That is the exact one I’m looking at, but I have a MacBook Pro which comes with a 61w power adapter where as the MacBook and MacBook Air comes with 29/30w adapters which is the same output as the Anker device you mention
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USB-C and powering devices
My new MBP charges via USB-C, it comes with a 60w adapter, as I usually have a few (one for home, one for the office and one to carry with me if I travel) I’ve been looking at Power Banks with Power Delivery so I have a portable source of power, but they only out put at 30w.
Checking the average input on my MBP it only rarely goes about 29.7w with the occasional spike to 45/50, if I power it from a 30w device could it cause any damage, or just charger slower?
Also I’m reading conflicting advice about cables, all seem to be ok for data transfer, but as a rule of thumb cheaper cables can’t do the full power transferTags: None
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