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Old 08-19-2019, 11:52 PM
Krej Krej is offline
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Join Date: Nov 2010
Location: Texas
Posts: 15
Krej is on a distinguished road
Krej Krej is offline
Junior Member
 
Join Date: Nov 2010
Location: Texas
Posts: 15
Krej is on a distinguished road
I have dual Odyssey group 25s (genesis system) and a buddy has a single Northstar in a JK (don’t know the size). Both are holding up, but there are several things to keep in mind:

1. AGMs have a different charge profile. They require ~14.7 volts to fully charge. The 4Runners alternator only supplies about 13.5 volts which will only charge the AGM to about 85% depending on ambient temperature.

2. To keep the battery healthy it will need to be charged to 100% using a charger with the correct profile about 1-2 times a month. I chose to permanently install a Victron solar controller (which has an AGM profile) inside the engine bay and then I connect it to a 12 volt power supply, basically mimicking a 100w solar panel. This leaves me the option to add solar down the road if needed for roughly the same price as a stand-alone charger.
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