Description:

Specification:
Module Name: Lithium battery charging board
Charging method: linear charge 1%
Charging current: 1A adjustable
Charging accuracy: 1.5%
Input voltage: 4.5V-5.5V
Full charge voltage: 4.2V
Charging indicator: Red charging / Green full charge
Input Interface: MINI USB
Wire connection: cannot be reversed
Weight: 10g

Features:
1.USB input terminal with a female, can be directly input to do with the phone charger rechargeable lithium battery, And still retains the input voltage wiring pads, can be very convenient DIY.
2. It can be used for voltage 3.6 3.7V, etc. 18650, polymer and other lithium battery charge and discharge protection.
4. Charging cut-off voltage: 4.2V ± 1%
5. Maximum charge current: 1000mA
6. Battery over-discharge protection voltage: 2.5V
7. Battery overcurrent protection current:3A
8. Board size: 0.87inch x 0.67inch

Applications:
This module is used for single-or multi-section parallel lithium rechargeable battery, charging from the USB port to take power.
Charge current tweak by changing resistor Rprog
RPEOG (k): IBAT (mA)
30: 50
20: 70
10: 130
5: 250
4: 300
3: 400
2: 580
1.66: 690
1.5: 780
1.33: 900
1.2: 1000

Package included:
10 x TP4056 1A Lithium Battery Charging Board Mini USB Charger Module