Micro USB connection so can be connected to computer USB port or a mobile charger. Blue SMD LED indicates charged and red SMD LED lights while charging.

Resources available to you

 check out the you tube videos that are Excellent by Julian Ilett

Loads of info on changing charge current and using a fuel gauge

  include Circuit Idea for Adjustable PSU using Boost Converter and 1 x 3.6v lipo cell

using cell from recycled Laptop battery pack. works well for powering circuits on breadboard or remotely.

Specifications:

Input voltage: 4.5V - 5.2V

Maximum charging current: 1000 mA

Charge cut-off voltage: 4.2 V + / - 1%

Battery under-voltage protection/cut-off: 2.5 V

Battery over-current protection current: 3 A

Input interface: Micro USB

Dimension: 2.6 x 1.7 cm

Package includes:

1x TP4056 LiPo Charger module