Been a bit too long since I posted here, but I've been getting into batteries and portable devices recently and here's what I'm bringing back from the exploration.
This is intended to be in the handle for the rotating fleshlight case, which is not connected when used with a SR6 or other robot.
T-Code controlled rotation + heat in a handheld format seems fun. That toggle switch has three poles, so one direction can only turn on the heat, while the other turns on heat + servos + controller. Battery is friction fit with some stripped wire at the moment, though I'll be moving that to a tension clip in the next revision. Wago 221s serve as the power bus and reduce the necessary solder joints to 4 easy through hole joints.
Reference links for charge pcb: https://www.amazon.com/gp/product/B09GHT9MC2/ https://www.aliexpress.com/item/1005002084477419.html
(this is a relatively new board, so aliexpress is more likely to have the higher quality ones than amazon. ones that have reviews showing "CKCS" silk screened on the board are likely higher quality)