HT202451: Using and maintaining your Apple MagSafe Adapter
Learn about Using and maintaining your Apple MagSafe Adapter
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All replies
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Helpful answers
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Oct 27, 2015 1:09 PM in response to duanefrombreaby OGELTHORPE,Use an inverter. A pure sine wave model would be desirable but not crucial.
Ciao.
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Oct 27, 2015 1:21 PM in response to duanefrombreaby duanefrombrea,I'm not converting from ac to dc. I'm going from a 12v dc to the MacBook Pro.
Can it be charged through a usb port?
Is there and adaptor from 12V to the Apple mag cable?
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Oct 27, 2015 1:28 PM in response to duanefrombreaby OGELTHORPE,I fully understand what you would like to do, but there is NO hardware available to go directly from a 12v source to the MBP eliminating the charger.
duanefrombrea wrote:
Can it be charged through a usb port?
No.
Is there and adaptor from 12V to the Apple mag cable?
That is where the inverter comes in. You will have to plug the Magsafe charger into the inverter.
Ciao.
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Oct 27, 2015 1:31 PM in response to duanefrombreaby BobTheFisherman,The inverter goes from 12v DC to AC for your computer.
https://www.google.com/search?q=car+inverter+for+computer&ie=utf-8&oe=utf-8
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Oct 27, 2015 2:10 PM in response to Csound1by duanefrombrea,Good information.
I'm trying to recharge where there is no 110 V power supply.
So how about hooking up two 12V batteries in series so I start with 24V ?
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Oct 27, 2015 2:20 PM in response to duanefrombreaby Csound1,No, that is also out of range. Do you have any access to AC power, any voltage from 100 to 240 (50 or 60z)
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Oct 27, 2015 3:10 PM in response to duanefrombreaby duanefrombrea,The inverter makes sense but it seems like a waste of power to have to go from 12v DC to 10v AC through an inverter back to DC.
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Oct 27, 2015 3:11 PM in response to duanefrombreaby duanefrombrea,This is for use in remote locations where there is no electricity at all. Just batteries carried in.
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Oct 27, 2015 3:12 PM in response to duanefrombreaby Csound1,What does 10v AC have to do with this?
I do not think that you should attempt this, do it properly, not do it your way.
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Oct 27, 2015 3:15 PM in response to duanefrombreaby OGELTHORPE,duanefrombrea wrote:
The inverter makes sense but it seems like a waste of power to have to go from 12v DC to 10v AC through an inverter back to DC.
You are 100% correct. Every transition from DC to AC and AC to DC results in a power loss of 10%-15%, depending upon the equipment. Your query is not the first regarding the use of a 12v power source for a MBP, but bottom line is until some savvy inventor comes along with a component that makes that transition efficiently, this Rube Goldberg arrangement is the 'only show in town'.
Ciao.
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Oct 27, 2015 3:30 PM in response to Csound1by duanefrombrea,Sorry, that was a typo.
I was trying to say 110V AC.
For background info, I'm trying to use the Mac Book Pro for emergency communications with it hooked up to a TNC (terminal node controller) and a ham radio to be able to send text messages by radio when the internet and normal email is down or not available.
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Oct 27, 2015 3:36 PM in response to duanefrombreaby OGELTHORPE,Consider this option:
http://www.amazon.com/Honda-EU1000i-Inverter-Generator-Eco-Throttle/dp/B00P9ONS7 4
And it will power the transceiver as well.
Ciao.
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Oct 27, 2015 3:45 PM in response to OGELTHORPEby duanefrombrea,Thanks for that great idea,
I've got the Honda EU 2000i. Both are really good choices, light and quiet. Not so good for back-packing though.
I'm working with small 12V batteries and may put a solar panel in the mix.
Maybe the Mac Book Pro is not the right tool for the kit.
