This easy-to-use 16850 battery holder with 4 slots offers micro and type-C charging inputs, and it can be installed with four 18650 batteries, five 5V/2A output ports, five 3.3V/1A output ports, and one 5V USB output.
It comes with overcharge and over-discharge protections that greatly extend the lifespan of your 18650 battery. The onboard DIP switch allows users to switch between HOLD and NORMAL modes. In Normal mode, it auto shutdown when the current is too low, while in HOLD mode, it keeps outputting and does not shut down until the over-discharge protection is triggered.This battery holder can be worked as the power source for micro devices, outdoor equipment, or DIY smart vehicles.
The button controls the module switch, lightly press it to turn it on, and long-press it for 3 seconds to turn it off. The DIP switch can switch between HOLD mode and NORMAL mode, LED1, LED2, LED3, and LED4 represent the current power. When charging, it will blink. It stops blinking when the battery is fully charged.
The maximum current is 3A (3A is not recommended), and the output of the current depends on the quality of the 18650 battery.
Pay attention to battery polarity when installing. The + and - are clearly marked on the board, and the wrong direction will burn the module.