This easy-to-use 18650 battery holder with a single slot offers a Micro-USB charging input, one 5V 2A USB-A output, three 5V 2A pad outputs and three 3.3V 1A output pads. The board includes over-charge and over-discharge protections that greatly extend the lifespan of your 18650 batteries. there is also an onboard power ON/OFF switch. 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! This battery holder can be used as a power source for microcontrollers, outdoor equipment and other low-power devices. 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 2-way and 4-way versions with slightly different features! Specifications * Output current: 5V/2A, maximum peak support 3A; 3.3V/1A * Protection: overcharge and over-discharge protection * Input: Micro USB * Output: * USB output x1 * 3.3V output pads x3 * 5V output pads x3 * LED indicator (green = charged, red = charging) Package Contents * 1x 1-Way 18650 Battery Holder Batteries not included https://elecena.pl/product/22727707/1-way-18650-battery-holder-discontinued 2023-03-07 https://elecena.pl/product/22727707/1-way-18650-battery-holder-discontinued 2023-12-27 https://elecena.pl/product/22727707/1-way-18650-battery-holder-discontinued 2024-09-18 https://elecena.pl/product/22727707/1-way-18650-battery-holder-discontinued 2024-11-29 https://elecena.pl/product/22727707/1-way-18650-battery-holder-discontinued 2024-11-30 https://elecena.pl/product/22727707/1-way-18650-battery-holder-discontinued 2025-04-10