Celestron PowerTank 7

Built with the amateur astronomer in mind, the portable Celestron PowerTank 7-amp 12 VDC power supply powers your motorised/computer-controlled telescope so that you can take it anywhere. It's not only useful for setting up and powering your scope, it can also aid as an emergency roadside accessory thanks to its built-in light and booster terminals.

Price: 109.99 from Wex Photo Video