With this kit,you can easily DIY an output adjustable power supply, like 9V, 12V, 15V, 18V, 24V etc. ...
Charging Board: Input interface: Micro USB Input Voltage: 5V Charging cut-off voltage: 4.2V±1% Maximum charging current: 1A Over-discharge protection voltage: 2.5V Over-current protection current: 3A Size: 26 x 17mm Tutorial: https://www.youtube.com/watch?v=aND0j2Y2IkM Note: ➤The first time you access the battery, it may be no voltage between the output OUT + and OUT-. You only need to charge it by the 5V voltage in order to activate this board. Also you need to recharge it when cutting and starting from the battery B + B-.
MT3608 Boost Converter: Input voltage: 2V - 24V Output voltage: 5V - 28V Output current: Max 2A, suggest to use within 1A and use the heat sink when working for long hours. Efficiency: > 93% Size: 36 mm x 17 mm x 6.5 mm Note: ➤This is a step-up converter. Only used to raise voltage, not to lower voltage. so the output voltage should be higher than the input voltage. ➤Please turn the potentiometer clockwise by more than 10 turns before test ➤Cannot select the maximum value of voltage and current as the output at the same time. When the output voltage is increased, the output current is reduced accordingly.
Battery Holder: Battery Type: 3.7V Material: Durable Plastic Size: 75 x 20 x 13mm Wire Lead Length: 130mm (red and black)
Package includes: 3 x MT3608 Module 3 x Charging Module 5 x Battery Holder