I use the Ryobi 1+ cordless system for my portable power tools. The batteries are perhaps the cheapest way to get a DC supply at a sufficient ampacity to allow 5 to 7 hours of run time.
However I haven't yet seen a 12V adaptor for these batteries.
Anybody here have any experience in modifying stuff to change 18V to 12V?
Ryobi make a USB adaptor and I am buying one anyway to use for recharging my phones next winter.
https://www.bunnings.com.au/ryobi-one-1 ... y_p6210800
I was thinking that somebody with a 3-D printer could make a shell easily enough but also willing to hack the adaptor itself by buying a second one.