I recently changed out all my MTH loco's to BCR's. Can I use the rechargeable MTH batteries (fully charged) in my K-Line and Lionel loco's? I am assuming I can, but then 'what do I know"???
I figure when the MTH batteries are fully charged they are no different than a 9V alkaline battery...and when they start to run down just take them out and recharge them.