#Jeep dual battery isolator relay upgrade

Welding Cable & Lugs â€“ I crimped the wire twice and staggered the crimp. Mega Fuse Holders - I ground down the nubs used to hold the lugs in place, shown later. I used welding cable, marine grade lugs, a solid state Isolator and bought the necessary brackets and mounts. If you have some welding skillz (chicks dig dudes with skillz) you can make your own battery tray and mounting options for the Isolator. This can easily be done for less $$$ with smaller wire and a solenoid (a relay on steroids) instead of a solid state Isolator (a semiconductor with no moving parts).

#Jeep dual battery isolator relay upgrade

This is a relatively expensive upgrade and I went out of my way to get very good if not the best parts I could. I know that if one battery dies and I start it with the backup that I shouldnâ€™t put everything on until I give the Primary battery time to charge. I would recommend upgrading the alternator or removing some load from the stock alternator (upgrading to LED turn signals, more efficient headlightsâ€¦). The stock alternator wasnâ€™t sized to charge two batteries. However if you have a winch and more electrical load it would benefit you. I am admitting for my case it is overkill. My winch is hydraulic so I wouldnâ€™t need it for that. Plus itâ€™s cool and you know that I have an extra battery on the trail if you need one. I have an alarm with a motion sensor that was drawing too much current. Why 2? Betsy sits for long periods and I wanted to make sure that she would start if I havenâ€™t driven her for a few weeks. But I could only fit 2 so I went with it. What is better than one battery? 17 batteries, obviously.