The answer you are looking for is a battery tender. I have one for my ATV, my camper trailer and my riding mower.
The camper and riding mower sit from about Oct. to April. I would bet $100.00 that the mower would start right away with a few cranks and no jump. Nothing on the camper to start, But I'd bet double or nothing that all the lights and the water pump would work right away with no jump or charge.
I use the ATV all year. It's a 2010 with the original battery.
Google Battery Tender.
There should be an Optima battery that will fit your Jeep. Go to Summit Racing and search their website for an Optima for your Jeep. You may want to consider a Red Top.
Good Luck, L.M.
1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-188K Miles
HEI distributor with computer and all related relays and wiring removed.
No back seat.
12K Badlands winch with dual batteries.