ReVolt : USB power your battery devices. by Luke Brennan — Kickstarter
USB Charger From 12V Li-ion Batteries : 3 Steps - Instructables
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SF18650B | Micro USB Lithium Ion Rechargeable Battery | SureFire
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Nitecore NL1834R 3400mAh USB Rechargeable 18650 Battery
Cartisan Ego 900mah Micro USB Variable Voltage Battery | Discount Vape Pen
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Streamlight 18650 USB Rechargeable Lithium-Ion Battery 22101 B&H