The best rechargeable batteries seem to be Sanyo Eneloops or rebranded variations. I have been phasing them in and getting rid of alkaline units. No problems whatever.

I am happy with my Maha MH C401FS which will work off of house current or 12V. Its four independent circuits will do either AA or AAA. I am not sure, but you might need another charger for CR123a's or 18650's.

I have only one light with 18650s. It will charge off my laptop USB port or my Guide 10 Plus and possibly directly from a Nomad panel.