Dual USB 4x 18650 Battery Case Power Bank DIY Kit Battery Charger Cover Battery Box Holder Shell
<strong>Features:</strong><br>Can install 4x 18650 batteries (batteries are not included).<br>Provides extra backup power for all devices supporting USB charging.<br>Dual USB output design， can charge 2 devices simultaneously.<br>Plug and Play， output power using the USB port， easy to use.<br>Environmentally friendly and economic efficiency.<br><br><span style="color: #ff0000;"><strong>Note:<br>1. You need to buy 18650 batteries in addition and weld on your own.<br>2. The digital display screen is not a real one.</strong></span><br><br><strong>Specifications:</strong><br>Model Number: X4<br>Material: Plastic<br>Battery Cells: 18650 * 4 (not included)<br>Input: 5V 1A<br>Output: 5V 1A<br>Color: Black， Blue， Green， Red， Orange (Optional)<br>Main Item Size: 12.3 * 7.5 * 2.2cm / 4.84 * 2.95 * 0.86in<br>Main Item Weight: 50g / 1.77oz<br>Package Size: 12.3 * 7.5 * 2.2cm / 4.84 * 2.95 * 0.86in<br>Package Weight: 52g / 1.83oz<br><br><strong>Package List:</strong><br>1 * Power Bank DIY Kit