Thread: Battery isolation?

  1. #1
    Join Date
    May 2011
    Location
    Bunker Hill, West Virginia, United States
    Posts
    10

    Default Battery isolation?

    When choosing battery isolators for trailer mounted batteries what amperage rating should I use? Do I choose a higher capacity than my maximum alternator output? My Jeep has a 116 amp alternator, would I be OK with a 95 amp vehicle mounted isolator to charge the trailer battery. ?

    Sent from my LS670 using Tapatalk 2

  2. #2
    Join Date
    Nov 2010
    Location
    Middle of Nowhere, Outer Skin of Space Ship Earth, 1 A.U. from Sol, Outskirts of Milky Way.
    Posts
    2,087
    The amperage flow rate will be limited by the battery's internal resistance as well as the resistance of the wiring. The alternator may be capable of producing 116a, but if the wiring and battery limit the flow rate to 10a, then that's what will flow.

    Sure, a 95a rated unit will be more than enough.
    ...
    ...
    Current: 76 E-250, bubble-top, self-contained|couple of old Yamaha enduros
    Previous wheelers: 41 Willys|78 FJ40|78 Bronco|84 Bronco|74 Ramcharger|78 Ramcharger|79 D150 PowerWagon|77 D100|79 D400 dually, converted to 4WD, utility bed, 10' Lance|75 Westy|69 Scout, RHD|bunch of others|bunch of bikes|couple of boats|couple of motorhomes|blah blah|so what|not my idea|just doin' what I'm told|wank wank|this space for rent|candy is dandy|but liquor is quicker

  3. #3
    i have the blue sea 7622 system. Its a 500a magnetic latch VSR. It works flawlessly and its less expensive than the competition. Plus you get a nice remote control swtich.

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