Battery tender question

Is there a way to use a single battery tender, and jumper leads to maintain a series of flasher batteries? I’ve got a number of low amp hour 12v that I would like to keep charged over the summer.

Assuming your batteries are Nicad if so charge them up begining of summer and the end. Those batteries will not benifit from the maintainer all summer long.

Wire them in parallel which is positives all connected to each other and negatives connected to each other. They should all be the same chemistry too I think. Don’t think this really necessary to do though, disconnect them and top them off in July if you’re worried.

I just recharge mine July 4th. It is an easy reminder. I have a regular battery going on 10 years old and still works fine on 1 of my units.
I use a Viking(Harbor Freight)tender on the UTV and truck. Works great.