Tony, Gold Seeker pointed out in his post that I made a mistake in my post thinking you made your battery pack system some years a go. Sorry about my miss post I meant no disrespect.
Tony and Joe, Thank you so much for the reply to my post and all the great information.
Tony in your battery pack system photos I do not see a circuit board but in Joe's photos I notice a circuit board. Do I need that circuit board to make up a battery pack and if I do what is the name of it?
Also what make and model of batteries and battery holders do you recommend?
Tony and Joe, Thank you both again for all your help.