can tool batteries be interchanged from one brand to another ? i know most likely can't be interchanged but i was thinking maybe with a little battery case modification could it be done ? I'm at wits end to find a battery that will work with my lynxx pole saw from harbor freight... looks as if HF doesn't have the batteries for the lynxx line of tools. Kind of sad they sell a brand for several years then down the road if you need a battery or charger , i guess your out of luck... i guess if i cant find a solution then the saw may end up in the trash...lesson learned the hard way on my part..., i know if i have to buy another saw it wont be from harbor freight cant take the chance on no support of a product down the road