At 1st I just used a car battery and put clamps on the end of an old jack plug which happened to fit the mount. Then when I had the money I bought one of those car jump starters. It has a light, air compressor, two cig' lighter outlets, and of course the car jump leads. It holds enough power for an all nighter. I got mine from KMart for about $70.00. It's a cheap alterntive or you could buy better. They are lighter than a car battery and can be charged in the car cig' lighter or by mainss. When I am out and about I use a solar panel which plugs into one of the cig outlets to recharge it during the day. In orther words it is not nessessary to buy an expensive unit made by the companys that make the scopes. StevenA
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