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8PCS 2A 5V Charge Discharge Integrated Module 3.7V 4.2V for 18650 Lithium Battery Charging Boost Mobile Power Supply Charge and Discharge Protection Converter Protection PCB Board Module

  • About this item
  • Designed for MCU users, this device connects to the microcontroller for about 20 seconds to provide a low level that allows the module to continue functioning. It features low-level trigger mode (ground).
  • 4 in 1 module for Charging / Discharging / Battery Protection / Battery Level Indication. Protection functions include over-current, overvoltage, over-temperature, and short circuit protection for lithium batteries.
  • The output activates automatically when the load is first connected. If the load is less than 50mA, the output automatically closes after 30 seconds; if the load exceeds 50mA, the output remains active.
  • High power efficiency with discharge efficiency up to 96%. In discharge mode, trigger the KEY port once to activate the output; continuously trigger the KEY port twice to deactivate it.
  • Suitable for applications such as converting solar panel energy to mobile phone charging, car charging retrofits, driving recorder power supplies, household power supply, intelligent plug transformations, and fast charging adapters.
  • Dimensions: 0.98 x 0.63 x 0.16 inches.
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First Listed on Newegg May 19, 2026

Warranty & Returns

Warranty, Returns, And Additional Information

Return Policies*

  • Return for refund within: 30 days
  • Return for replacement within: non-replaceable
  • This item is covered by YunYunKeJiShiZhuangDian Return Policy
  • *Subject to applicable law
  • Warranty Notice:

    This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.

Manufacturer Contact Info

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