Product Name : Mini 5V 1A UPS Uninterrupted Output Module 2 in 1 Charge Discharge 3.7V 3.8V 4.2V Li-Ion Li-Polymer 18650 Battery Charger Board

Packing list:
1PCS ND1A05MA 2 in 1 Charge and Boost modules 5V Output Module

Description:
2 in 1 Charge and Discharger(Boost) UPS modules
Charge voltage : DC 4.5V-6V(Recommend DC 5V)
Charging current : 0-500mA
Full charge voltage : 4.20V(+-1%)
Discharge voltage: 5V
Discharge current: 1000MA
Operating ambient temperature : -40° to +85°
Storage temperature : -65° to +125°
Small Size: 15*10.6*5MM
Light Weight :

5V Input 5V/1A Uninterrupted Output
100μA No load Iq
Up to 96% Efficiency during Boosting
Programmable Charging Current
Short-circuit Protection
Boost Output to Input Reversed Current Protection

Note:
1 The charging current is only 500MA. When the average discharge current is greater than 500MA, please use a larger capacity battery and fully charge the battery first.
2 Be sure to connect the lithium battery when using it
3 If the heat is severe, please reduce the output current or enhance heat dissipation.

Tips:
The module has a simple charge and discharge protection function.
You can use batteries without a protective plate or with a protective plate.

Applications:
AA AAA Dry cell powered equipment
Battery powered equipment
Lithium Battery 18650 14500
UPS power supply equipment diy
Solar charging
STM32 FPGA/CPLD PIC AVR Board
Electronic diy kit
Wifi Module ESP8266 ESP32
Bluetooth-Compatible Module:HC-05 HC-06 SPP-C

Pin Description:
Vo 1A Discharge output port positive(5V)
G GND(0V)
B Battery Charging positive pole(4.20V)
Vi Input Power positive pole(4.5-6V)