Solar power bank 5000mAh

thingiverse

Hello, This is a DIY solar power bank with a LiPo battery of 5000mAh. You need: - Solar Panel: https://www.banggood.com/12V-4_2W-130200mm-Portable-Polycrystalline-Solar-Panel-p-1380610.html?rmmds=myorder&cur_warehouse=CN - Solar Board: https://www.banggood.com/3pcs-DIY-5V-2A-Voltage-Regulator-Junction-Box-Solar-Panel-Charger-Special-Kit-p-1346493.html?rmmds=myorder&cur_warehouse=CN - Charge Board Dual USB with LCD Screen: https://www.banggood.com/Dual-USB-5V-1A-2_1A-Mobile-Power-Bank-18650-Battery-Charger-PCB-Module-Board-p-1031593.html?rmmds=myorder&cur_warehouse=CN - Battery: 3S LiPo 5000mAh Note: 3S means you can make three solar panel banks. 1. Remove the USB connector on the solar board and solder + and - wires to the output of the micro USB on the charge board (you have GND on the back left and + is on the right; it's easier to solder a capacitor near the back of the connector). 2. Solder the solar panel to the + and - on the solar board. 3. Solder a battery (5000mAh is a good choice) to the batt+ and - of the power bank board. You can charge the battery with the micro USB of the power bank board or charge with the solar panel, which takes quite a long time. The solar panel is more for reducing discharge than for completely charging the battery. However, if you place the solar panel under bright sunlight, it will charge the battery in 4 to 5 hours.