18650 Battery Holder Li-ion Battery with 4-Compartment Support Micro USB 5V/3A 3V/1A V9 Shield Battery Charging Module with to Micro USB Charging Cable

The 18650 Battery Holder comes with four layers of safety protection (overcurrent/overvoltage/undervoltage/overtemperature), featuring a high conversion efficiency of 95%. It supports 1.5A charging and 3A discharging, balancing safety and energy efficiency. The multi-port design (USB+3V/1A+5V/3A) suits various device power requirements, solves the pain point of insufficient motherboard ports, and is more compatible and practical. 5-level LED indicators show battery status clearly: flashing single LED for 099% during charging, and progressive LED dimming from 5 to 1 for 800% during discharging (15% flashes, 0% all off). Dual mode (manual+automatic shutdown) with one-click switching, easy to operate, electrode saving, adaptable to multiple scenarios. Wide temperature stable operation (-20 ~70 ), 5V constant voltage input (recommended 5V1A or above); the battery can only be used in parallel with 3.2V - 4.2V, and series connection is strictly prohibited. The wiring must distinguish between positive and negative poles