TP4056 5V Micro USB 1A 18650 Lithium Battery Charging Board Charger Module

This tiny module is perfect for charging single cell 3.7V 1 Ah or higher LiPo cells such as the 18650s that do not have their own protection circuit.
Based around the TP4056 charger IC and DW01 Deep Drain Battery Protection IC this module offers a 1A charge current.
The module cuts off the charging current when finished.

Furthermore when the battery voltage drops below 2.4V the protection IC will switch the load off to protect the cell from running at too low of a voltage — and also protects against over-voltage and reverse polarity connection (it will usually destroy itself instead of the battery) however please check you have it connected correctly the first time.

Features:
Under Voltage Cut off / Deep Drain Protection
Over Current Protection
Adjustable Current Limit through R-Prog
Over-voltage charging protection
USB Micro Connector (with more commonly available USB cables)
LED Status Indicator for Charging / Full charge status monitoring


Technical Specifications:
Module Name: Rechargeable lithium battery module
Method: linear charge 1%
Charging current: 1A Adjustable (Through 1.2k R3 RPROG Resistor)
Charge Accuracy: 1.5%
Input voltage: 4.5V-5.5V
Full charge voltage: 4.2V
Over-discharge / Deep Drain protection voltage: 2.5V
Over-current protection: 3A
Charging input interface: Micro USB
Working temperature: -10 Degree to +85 Degree
Polarity Reversal: Not Allowed
Weight: 1.7g
Dimensions: 28 * 17 * 1.1mm

How to Use the Module:
Connect micro USB cable for power, or 5V DC to pads marked IN+ and IN- on the left-hand side of the module
Connect cell to charge to B+/B- pads on the right-hand side of the module
A load (something for the battery to power) can be connected to the OUT+/OUT- pads on the right-hand side
Important! Disconnect load when charging
The Red LED indicates charging in progress,
The Blue LED indicates charging has finished.
Never charge your battery at a rate greater than 1C.