Specification:
Input Voltage: 6~8.4V (compatible with two series-connected 18650 or 26650 lithium batteries)
Output Voltage: 6~7.2V
Output Current: 1.8~2.3A (suitable for 15~20W lamp beads)
Modes: Three modes (high - low - burst flash) or five modes (high - medium - low - burst flash - SOS)

Features:
1. Versatile Power Compatibility: Supports a wide range of input voltages from 6V to 8.4V, making it perfect for use with two series-connected 18650 or 26650 lithium batteries.
2. Convenient Integrated Switch: The switch is conveniently located in the middle of the flashlight for easy, one-handed operation, ideal for both outdoor adventures and daily use.
3. Optimized Circuit Design: Ensures stable current output for maximum flashlight brightness, while also minimizing energy consumption to extend battery life.
4. High-Efficiency Driver Chip: The advanced driver chip reduces power consumption and heat generation, improving overall flashlight performance.
5. Wide Barrels Compatibility: Designed to fit various flashlight barrels, compatible with multiple brands and models of lamp beads, offering extensive upgrade options for DIY enthusiasts.

Package Includes:
1 x Flashlight Driver Board