1. Compact and lightweight design for easy carrying. 2. DIY a power bank for your phone. 3. With LCD display show charging progress. 4. Please charge the batteries with USB cable or other chargers. 5. Compatible for 4 x 18650 Li-ion rechargeable batteries (not included). 6. Support voltage and over-current protection, short circuit protection. 7. Widely compatible for iPhone, iPad, Samsung, LG, Sony, MP4, PSP, camera, etc.
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