On 11 Mar 2020, at 00:07, Graham <g0nbd@...> wrote:

?Yes, that power/size/weight ratio is persuasive , but, the downside, may be emc issues from the battery management?
Not insurmountable,? but, you likely end up , with a novel solution , more art for art sake , rather than practical?

There are quite a few nimh? 24v battery packs on ebay of various , ratings,??
Disassembling one of those,? might be the simple option , as the cells will have?
Tag's and compatible chargers are also available ..?

Tnx? G