This easy-to-use 4-slot 18650 battery holder offers Micro-USB and USB-C charging inputs, five 5V 2A output solder pads, five 3.3V 1A output solder pads and one 5V USB-A output. The board includes over-charge and over-discharge protections that greatly extends the lifespan of your 18650 batteries. There is no reverse-polarity protection onboard - please ensure you fit your batteries the right way round with the + and - clearly marked on the board! The onboard DIP switch allows users to switch between HOLD and NORMAL modes. In Normal mode, the board will auto-shutdown when the current is too low, while in HOLD mode, it will keep outputting and does not shut down until the over-discharge protection is triggered. This battery holder can be used as a power source for microcontrollers, outdoor equipment and other low power devices. The onboard button controls the module - lightly press it to turn it on and long-press it for 3 seconds to turn it off. LED1, LED2, LED3 and LED4 represent the current power. When charging, the LED will blink. It stops blinking when the battery is fully charged. Note: The maximum current is 3A (however 3A should be considered a temporary peak current only), the output also depends on the quality of the 18650 battery. We also stock 1-way and 2-way versions! Specifications * Output current: 5V/2A, maximum PEAK support 3A; 3.3V/1A * Input: Micro and Type-C port input * Output: * USB output x1 * 3.3V output pads x5 * 5V output pads x5 * LED indicator (blinking means charging, stop blinking means fully charged) Package Contents * 1x 4-Way 18650 Battery Holder Batteries not included https://elecena.pl/product/22727085/4-way-18650-battery-holder-discontinued 2023-03-07 https://elecena.pl/product/22727085/4-way-18650-battery-holder-discontinued 2023-12-27 https://elecena.pl/product/22727085/4-way-18650-battery-holder-discontinued 2024-09-18 https://elecena.pl/product/22727085/4-way-18650-battery-holder-discontinued 2024-11-29 https://elecena.pl/product/22727085/4-way-18650-battery-holder-discontinued 2024-11-30 https://elecena.pl/product/22727085/4-way-18650-battery-holder-discontinued 2025-04-10