The Sky-Watcher 17Ah Rechargeable Power Tank is a multi-purpose Rechargeable Power Supply ideal for use with Sky-Watcher SynScan, Syntrek, SupaTrak, AllView and Virtuoso mountings. It can also be used with computerised telescopes of other brands requiring a 12V DC power supply. Also a useful camping accessory device, plus this can even jump-start your car! Specifications: - Multi-function rechargeable power supply for use with Sky-Watcher SynScan, SynTrek, SupaTrak, AllView and Virtuoso mountings, and computerised telescopes of other brands requiring a 12v DC Power Supply. Also a useful camping accessory. - Radio AM/FM/SIREN - Built-in Spotlight/Flashlight - Angle adjustable 30 high-output LED Spotlight - Built-in Circuit Breaker and fuse to Ensure Safe Operation - Diagnostics L.E.D. shows Battery Status - 2 x 12V DC output car jacks - 2 x USB output sockets (5v, 1.5A) - Cord Storage Compartment - Detachable flashlight with ON/OFF/FLASH function and diffuser - Built-in 12V 17Ah Sealed Lead-Acid rechargeable battery - DC Cord with car plug is included - Mains charger, with UK & Euro adaptor plugs