1Pcs 18650 Charger Board Lithium Battery Charging Module Dual USB 5V 2.4A MiniType-C Power Bank Module DIY with Overcharge Overdischarge Short Circuit Protection LED Display

This module is a portable backup power supply with an input that matches the 5.0V adapter to charge the internal battery. Use built-in battery for portable device to provide 5.0V/3.0A USB2.0 supply output for external devices.
The LED digital screen displays the current battery charge while charging.When discharging, the LED digital screen displays the current power, and the display is saved in about 30 seconds (double-click the button to resume display).The system will provide an accurate battery indication after a complete charge and discharge.
Charging cable: support three USB data cable charging, including Iphone and Android.
overcharge protection, overdischarge protection, short circuit protection, constant current.Suggest Working Conditions:Max continuous charge/discharge current 1.5/2.4A,working temperature: -5～45℃.
Note: The positive pole of the battery is connected to B+ and the negative pole is connected to B-, do not reverse it.It is recommended to use 3.7 to 4.2V polymer batteries or flat-head 18650 batteries, other types of batteries are not recommended (such as power batteries or pointed 18650 batteries) .