Dual USB 6x 18650 Battery Case Power Bank DIY Kit Battery Charger Cover Battery Box Holder Shell

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Features: Can install 6x 18650 batteries (batteries are not included). Provides extra backup power for all devices supporting USB charging. Dual USB output design, can charge 2 devices simultaneously. Plug and Play, output power using the USB port, easy to use. Environmentally friendly and economic efficiency. Note: 1. You need to buy 18650 batteries in addition and weld on your own. 2. The digital display screen is not a real one.