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Discussion in 'Chevy Trucks' started by JTS Landscaping & Lawn Service, Oct 19, 2005.

  1. i have a 100 amp alternator would this work with a dual battery set up. or should i go bigger.
  2. heather lawn spray

    heather lawn spray PlowSite.com Addict
    Messages: 1,206

    Is it the standard issue GM alternator @105 amps? It will probably hold you for most situations especially with dual batteries. What is the CCA of the batteries? If you are on very long sessions, use a lot of auxilliary power (lights, radio, heater-defroster or salters) or do a lot of short manuvering in small lots you could find low battery problems. Remember to keep all the connections corrision free.
  3. welded wrenches

    welded wrenches Senior Member
    Messages: 177

    Dual battery/deepcycle

    Hi i used a set=up recently and this worked for me.2 brand new batterys both with rated 875 Cold crank amps (875CCA) One was a deepcycle the other was a regular battery.Ya this idea sounds a little off beat,but my headlites dimmed much less and i use only a 84 amp alternator that puts out a alot more amps at a lower RPM.Anyhow it worked.I asked everbody i could about this setup and how it would work,and they said.Never heard of sucha idea.GO FIGURE.
  4. PLOWMAN45

    PLOWMAN45 2000 Club Member
    Messages: 2,951

    I'm just using a 130amp alt that came stock with the truck and a optima red top battery i think its 875 cold cranking amps
  5. crete5245

    crete5245 Member
    Messages: 61

    Should have no problem, I am using dual 1100 cca batteries and a 60 amp alt, I have had no problems staring or running extras, when pushing snow all night. Remember to run big cables and keep the connections clean.