This mobile power supply offers versatile applications: 12V/3A including connection cable for the telescope connection, a 5V/2.1A charging port for tablets, and a 5V/1A charging port for smartphones. It also features a flashlight function with optional red or white light, as well as a strap for attaching to the tripod leg. The power tank has a robust housing that is dust and waterproof. The lithium iron phosphate battery offers significant advantages: high storage capability, as the battery is not damaged even after long periods of non-use (up to ten years). Each battery loses its performance with each charge cycle, but this decline occurs much more slowly with the LiFePO4 battery, lasting up to 2000 charge cycles. The maximum charging time is 3 hours. The power tank is environmentally friendly, as it contains no toxic heavy metals, is explosion-proof, and has no memory effect. This power tank will last as long as your telescope. The best part: we provide this power tank with a special angled plug. If the power cable gets tangled around the mount during an observation night, only the plug will be disconnected, leaving the mount's socket undamaged. It's often the little things that matter in astronomy accessories.