This product has a low voltage defense function. Please totally fee your battery earlier than using this product! This product doesn't involve batteries. You should convey your own battery that fits it. If there is not any battery or the battery doesn't match, it's going to now not work. Product Introduction: 1. Equipped with infinite dimming function, brightness would be adjusted in line with needs. 2. Suitable for lighting in work, study, outdoor, field, emergency and diversified places. 3. ABS supplies are more environmentally pleasant and reduce human hazards. 4. The battery can be used flexibly. It is awfully powerful and whole of functions. 5. Stable and strong performance, built to strict quality. 6. Lighting mode: 4-inch Circular Lamp: Spotlight mode/Astigmatism mode 4inch Square Lamp: Only Spot Mode 8inch Lamp: Low beam mode/High beam mode 7.Power:35W Brightness:5000LM 8. Input voltage: 18V~20V 9. Color temperature: 6500K 10. Type C and USB Output: Built in USB quick charging management IC, output voltage range: 3V to 12V, robotically modify the output energy in preserving with the fast charging protocol: most 18W( 5V 3 , 9V 2A , 12V 1, Etc.) 11. The low-voltage defense board is integrated to ensure that the battery stops operating when the voltage is less than 15V, simply so it may be used safely to avoid over discharge of the battery and injury to the battery. 12. Compatible with battery models: For Ryobi 18V Li-ion Battery: P107 P108 P189 P194 PBP002 PBP005,etc. 13. Package Included: 1x LED Working Light( This product does not embody battery!!! ) Note: (1). Please allow zero variations because of handbook measurement. (2). Due to the sunshine and exhibit difference, the item's colour may perhaps even be barely diversified from the pictures. Product particulars display: (1)4inch Circular Lamp Compatible with (for Ryobi) 18V lithium batteries (2) 4inch Square Lamp Compatible with (for Ryobi) 18V lithium batteries (3) 8inch Rectangle Lamp Compatible with (for Ryobi) 18V lithium batteries Please note: 1. Please enable 0-1 inch error thanks to handbook measurement. Thanks on your understanding. 2. Monitors aren't calibrated same, merchandise colour displayed in photographs may also be showing slightly diverse from genuine object. 3. There is barely a lamp within the package, aside from batteries. 4. The batteries in the above product images are only used to describe the needs of the lamp. Warm reminder (very important!!!): There is not any battery in the package!!!!!!