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macmesser

macrumors 6502a
Original poster
Aug 13, 2012
921
198
Long Island, NY USA
I am getting a multi-purpose lithium power bank to recharge/run my notebook, iPhone, iPad and planning on using one which can jump start a 12V vehicle. Some of these have switches to select from among three different voltages for their usb charging ports. I was looking for specs on the notebook power supply in hopes of getting info to choose the most compatible power bank for it but the only spec given is that the supply is rated at 87W. Am I correct in thinking that any voltage will work with my battery powered devices and higher voltages will simply charge them faster?
 

Samuelsan2001

macrumors 604
Oct 24, 2013
7,729
2,153
I am getting a multi-purpose lithium power bank to recharge/run my notebook, iPhone, iPad and planning on using one which can jump start a 12V vehicle. Some of these have switches to select from among three different voltages for their usb charging ports. I was looking for specs on the notebook power supply in hopes of getting info to choose the most compatible power bank for it but the only spec given is that the supply is rated at 87W. Am I correct in thinking that any voltage will work with my battery powered devices and higher voltages will simply charge them faster?

Its a little more complicated than that, all apple products should draw no more power than they need, they will only be faster if there aren't drawing their maximum already, there are some specifically designed to do it all. have a read

http://www.techradar.com/news/top-portable-chargers
 
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PBG4 Dude

macrumors 601
Jul 6, 2007
4,361
4,644
To charge your MBP at the fastest rate, you’ll need a power supply with a USB-C port that conforms to the USB-PD (Power Delivery) protocol.
 
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macmesser

macrumors 6502a
Original poster
Aug 13, 2012
921
198
Long Island, NY USA
Its a little more complicated than that, all apple products should draw no more power than they need, they will only be faster if there aren't drawing their maximum already, there are some specifically designed to do it all. have a read

http://www.techradar.com/news/top-portable-chargers

Thanks for the link, which gives a good sampling of what's out there. Any chance of damaging a device or its battery by charging with a mismatched power bank?
[doublepost=1512698653][/doublepost]
To charge your MBP at the fastest rate, you’ll need a power supply with a USB-C port that conforms to the USB-PD (Power Delivery) protocol.

Thanks for the heads up. Several I've looked at feature Qualcom ports.
 

Samuelsan2001

macrumors 604
Oct 24, 2013
7,729
2,153
Thanks for the link, which gives a good sampling of what's out there. Any chance of damaging a device or its battery by charging with a mismatched power bank?
[doublepost=1512698653][/doublepost]

Thanks for the heads up. Several I've looked at feature Qualcom ports.

Always a chance of damaging a device with a rubbish power bank, I would say spend some decent money on it quality of parts and insulation is all important.
 
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