Magic Box modify your existing Apple MagSafe Power Adapter to use with HyperMac/HyperJuice External MacBook Batteries
Compatibility: All models of Apple MacBook / MacBook Pro / MacBook Air
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Only 2 minutes to attach 2 "Magic Box" adapters along MagSafe Power Adapter cord
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Create your own MagSafe charging cable to charge any MacBook with HyperMac External Battery or Car Charger
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Recharge HyperMac with Apple MagSafe Power Adapter. No need to carry separate HyperMac power adapter
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Use as normal MagSafe Power Adapter to charge MacBooks
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Please download the USER MANUAL
Features

What's in the box
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HyperJuice Magic Box (2pcs)
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Detailed photo and video guide to show you how easy it is