Feature: 1. [DUAL USB] The lithium battery adapter has dual USB ports, 5V 2.1A output, providing fast and convenient charging. 2. [12VDC PORT] 12VDC port output, can provide 12V DC power, can be used for small heating and cooling appliances. 3. [LITHIUM BATTERY] Use lithium battery for power supply, so that power tool battery has multiple uses​​​​​, with strong practicality. 4. [WITH LED LIGHT] With 3W LED light, switch reset button, 3 levels (100‑200‑300LM) adjustment, can illuminate a room of 10㎡. 5. [MULTIPLE USAGES] Suitable for situations such as car repair, workshop, construction site, walking, camping, fishing or home lighting. Specification: Item Type: Lithium Battery Light Adapter Input: 14.4-20V Output: Dual USB, 5V 2.1A per port, 4.2A total Luminous Flux: 100-200-300 (LM) Light Source: White Light Angle: Direct Control System: Switch Service Life: 1000H Appearance Size: Approx. 105 x 75 x 50mm / 4.1 x 3 x 2in Shell Material: ABS Protection Level: IP65 Installation Method: Surface installation . Package List: 1 x Lithium Battery Light Adapter Note: It is best to remove this product from the battery when not in use to avoid power consumption.