Q: I have HyperJuice 220Wh battery with old style MagSafe cable (without any boxes). I tried to charge my MacBook Pro Retina with it using MagSafe->MagSafe 2 converter. MacBook does not recognize it at all. Then I tried HyperJuice car charger (battery->magsafe cable->magsafe 2 adapter->macbook). It only slows down internal battery drain. Looks like this is a voltage issue. How can I convert my cable to be compatible with my notebook?
A: As far as the battery side, you might get better results with the new Masafe 2 cable, however the voltage output on the HyperJuice battery is still a little to low for the new retina MBP.On the Car adapter side, similar story. I'd suggest you consider a higher voltage adapter like the ones we sell here: http://mikegyver.com/IdeasnProducts/
Thanks!
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