Feature: 1. 40W 3.2V/3.7V solar ceiling light source board, built‑in white light + warm light dual color, the light color can be switched. 2. Easy to install, it can be used for solar garden lights, solar flood lights, solar ceiling lights, and other solar lighting fixtures. 3. Using high‑quality aluminum substrate + ABS material, durable, good heat dissipation, not easy to damage, long service life. 4. High brightness, low power consumption, brightness can be adjusted according to needs, remote control timing, easy to operate. 5. Produced under strict quality control and standard requirements, the safety factor is high, stable and reliable to use. Specification: Item Type: Lamp Panel Board Material: Aluminum Substrate + ABS Weight: Approx. 74g / 2.6oz Application: Used for solar garden lights, solar flood lights, solar ceiling lights, solar lights and other lamps Rated Battery Voltage: 3.2V lithium iron phosphate battery / 3.7V ternary lithium battery (the battery needs to have its own protection board) Remote Control Power: 2 x AAA Battery (Battery Not Included) Recommended Battery Capacity: 10AH Solar Panel Input Power: 6V<15W Total Lamp Power: 80pcs 40W. Package List: 1 x Lamp Panel Board1 x Remote Control (Battery Not Included)1 x Manual Note: When using 3.2V or 3.7V lithium battery, please be sure to install a protective board to prevent overcharge and overdischarge.