LED Flashlight Driver Board 6-8.4V 20W Constant Current 3/5 Modes for 18650/26650(A)

Compact flashlight driver board designed for flexible battery setups and stable high-performance output. Key benefits: - Broad battery compatibility for longer runtimes. Supports 6 to 8.4 V input so two 18650 or two 26650 lithium cells in series can be used interchangeably, giving you flexible options for endurance and availability. - Simple one-handed control. Integrated mid-body switch makes mode changes quick and intuitive for outdoor use or everyday carry. - Stable brightness and extended battery life. Optimized circuit and high-efficiency driver provide steady current output while reducing energy waste and heat generation. - DIY friendly and widely adaptable. Fits many flashlight barrels and lamp beads, offering a versatile upgrade path for custom builds and repairs. Main features: - Input voltage: 6 to 8.4 V, suitable for two 18650 or two 26650 cells in series. - Output voltage: 6 to 7.2 V. - Output current: 1.8 to 2.3 A, suitable for 15 to 20 watt lamp beads. - Modes: Available in three-gear version or five-gear version. Three-gear modes: high, low, burst flash. Five-gear modes: high, medium, low, burst flash, SOS. - Efficient driver and optimized circuit design for lower power consumption and reduced heat. Compatibility and fit: - Designed to adapt to a variety of flashlight barrels and LED lamp bead models, making it suitable for many common flashlight DIY projects and upgrades. - Physical mounting and electrical specifications align with standard two-cell series configurations used in 18650 and 26650 flashlights. Typical use scenarios: - Weekend backpacking or camping where battery flexibility and long runtime matter; use two 26650 cells for extended runtime or two 18650 cells for lighter weight. - Repair or upgrade of a handheld flashlight to achieve more stable brightness and reduced heat at 15 to 20 watt output levels. - Custom flashlight builds where precise mode control and compatibility with multiple lamp bead types are required. Package contents: - Flashlight driver board x 1. This driver board is a practical upgrade for hobbyists and technicians who need reliable performance, flexible battery options, and straightforward one-handed operation.