Has anyone tried adapting the batteries used in garden tools (e.g. hedge clippers)as a power source for some astronomical devices? I know the Ah might be low, but it might be useful for small devices.
Recently I purchased a Black and Decker cordless weed trimmer. It came with two 20 AH lithium batteries. Very impressive performance. Since one battery will last for three yard trimmings the other battery begs to be converted to astro use. The batteries are compact and lightweight to boot.