I think I posted the other day about my factory battery going bad in my Yota. Anyway, I decided on a Yellow-Top Optima, correct sized G27F. I DID buy a battery-specific battery tender like Trlrdr suggested. It’s got a setting FOR gel-cells. Here’s the info that I wanted to include: If you’re buying online, make sure you’re buying from an authorized dealer. I would rather buy from my parts guy face-to-face to get the core charge right then and to avoid warranty issues later, plus it puts money where it belongs, in the local economy.

Battery:
https://www.optimabatteries.com/en-us/yellowtop-deep-cycle-battery/d27f

Battery Tender:
https://buy.optimabatteries.com/5014/5927/7655/Digital_1200_Battery_Charger_Manual.pdf

I bought both because I needed another charger anyway and you get an extended warranty on your battery. Ouch one time.

Son of a buck and I thought Interstate batteries were expensive. Is that a regular charger where you plug into outlet or a chargable one?

It is a regular plug in charger. It doesn’t store a charge to boost a vehicle off. Yes, they are high.

Here’s my jump box I bought from Amazon on July 12 last year. It’s also good for running small lights and computer charging during power outages.
https://www.amazon.com/Jump-N-Carry-JNC1224-3400-1700-Starter/dp/B000JFHMVG

I always run Odyssey batteries. They are the best imo but I have had great luck with the Optima as well.

Any and every thing you've always wanted to know about batteries.

Link

Definitely agree. My Odyssey on my Ranger is on 8 or 9 years at least. Put a trickle charge on it and she’s fine. Worth every penny!