I’d install a Blue Sea Mini Add a battery kit. Charges battery separately when needed, isolates one battery for starting only. You can choose to isolate batteries, e.g., use large battery winching and auxiliary gear, stock battery for starting only. If need be also install pigtails so you can top up charging on the Group 34 when at home if need be. Engine charge should keep up provided it’s ran enough. System I’ve installed and has been bullet proof for 3-4 years now. I’m using an Odyssey 925s under hood. Hindsight being 20/20 if I did it again would be Optima or Odyssey under seat with Blue Sea Kit. Not that I’d change it now as I’m very pleased with what I have, the 925s is in a steel ammo can with fuse breaker and fuse distribution block under the hood. With it under seat frees up under hood so you can pack more keerap...