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Originally Posted by AstroApprentice
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I've got one of these, and it's a massive improvement on the old Supercheap jumpstarter pack. If you've got a dob, it used to be a right pain having to move the battery when the scope is slewing, but these lithium fellows just sit on the side of the dob, held in place with a few velcro strips. Plus the USB ports let you keep tablets/phones charged at the same time.