Feature: _x005f_x000D_ 1. This is the mobile power module accessory, 18650 board enclosure. _x005f_x000D_ 2. Meet your DIY's personal needs, but you must understand the basic electronic components. _x005f_x000D_ 3. Mainboard's own protection function: charging overcharge protection, over discharge protection, over-current protection. _x005f_x000D_ 4. When the intelligent output device is fully charged, it will automatically stop charging to prevent the phone from overcharging. _x005f_x000D_ 5. The output voltage and current are stable and will not damage the user's equipment. _x005f_x000D_ _x005f_x000D_ Specification: _x005f_x000D_ Micro USB input: 5V 1A _x005f_x000D_ USB output: 5V 2.1A / 5V 1A (dual USB interface) _x005f_x000D_ Charging display: intelligent digital display _x005f_x000D_ Battery type: liquid lithium ion battery (18650) _x005f_x000D_ Product size: 57mm * 28mm * 8mm/2.24*1.1*0.31'' _x005f_x000D_ Screen size: 27mm * 17mm/1.06*0.66'' _x005f_x000D_ Weight: 12g _x005f_x000D_ _x005f_x000D_ Warm Tips: _x005f_x000D_ 1. The circuit board is connected to the battery's negative B -, and B + is the positive pole. There is no reverse connection. If the connection is twisted, it will burn the circuit board. The battery is connected in parallel with the solder, and then the battery is assembled. _x005f_x000D_ 2. Please note that the insulation between the battery and the circuit board and the battery lead should not contact the circuit board to avoid short circuit. _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Please allow 1-3mm differs due to manual measurement. _x005f_x000D_ Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 X Mobile Power Bank 18650 Battery Charger Module 1. This is the mobile power module accessory, 18650 board enclosure. 2. Meet your DIY's personal needs, but you must understand the basic electronic components. 3. Mainboard's own protection function: charging overcharge protection, over discharge protection, over-current protection. 4. When the intelligent output device is fully charged, it will automatically stop charging to prevent the phone from overcharging. 5. The output voltage and current are stable and will not damage the user's equipment.