18650 Battery Charger Box DIY Kit Portable LCD Display Charger Board PCB Module Board

Product description:MakerFocus 18650 Battery Charger Box DIY Kit, Portable LCD Display, Incluing 2pcs Dual USB 5V 1A 2.1A 186 50 Charger Board PCB Module Board with Protection and Black Case for Cell Phone Features:1. LED Blue backlight2. Input: 5V /1A3. Output voltage: 5V4. Output current: 1A / 2.1A5. Capacity: Can be installed 4 x 186 50 3.7V6. Dimensions: 107 x 70 x 25 (mm)DIY Progress:1. Making Battery PackNotice: Please distinguish Battery +/ -. It's better to add insulating strip in the B+ in case the battery short circuit.2. Welding B+ / -The black cable should be connected to B-, the red cable should be connected to B+.3. Activating Circuit / Charging TextLink to 5V charger or PC USB, just two or three seconds, the circuit can be activated.4. Discharging TextCharge your cell phone, plug and play, no other operations.5. Mounting Switch ButtonPut the switch to switch fixed mount and makes it stable.Mount the switch to the cover of power bank and stable it with soldering iron.6. P