INVERTER ISSUES! UGH! PLEASE HELP!

Discussion in 'Ask An Owner Operator' started by Batman13, Nov 27, 2021.

  1. Batman13

    Batman13 Light Load Member

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    ANY INFO WILL HELP...PLEASE NO SNIDE OR SMART ### REMARKS!
    Ok so the inverter I had before was 3000watt..it was going draining my batterys and wouldnt stop beeping..checked the batteries and there was blue crust #### on the terminals..cleaned it out and replaced the batteries..bought a need inverter its 2000watt..it was doing fine..but now as soon as I turn it on...it beeps without even having anything plugged in..any info why its acting up?
     
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  3. JonJon78

    JonJon78 Road Train Member

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    Do you leave the truck off the entire time you're using the inverter?

    To prevent corrosion on the terminals/cables use battery terminal grease
     
  4. Batman13

    Batman13 Light Load Member

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    No the truck stays on for a while the its off for a few hrs...
     
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  5. AModelCat

    AModelCat Road Train Member

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    Did you read the owner's manual for the inverter? Unfortunately that beeping could mean anything.
     
  6. Batman13

    Batman13 Light Load Member

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    Yea checking it now..Im pretty sure its the wires..
     
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  7. Qbf594

    Qbf594 Road Train Member

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    Without knowing the specs on your inverter it's not possible to precisely diagnose the problem. If you leave the inverter on 24-7 it's tapping your battery bank 24-7. Which is unnecessary and unadvisable. If the inverter is reading the voltage being low while no load on the 120ac it's likely your battery bank is weak. It might be just 1 crap battery. Even 1 crap cell in 1 battery. But the weakest link is the best your 12v supply will do. Swapping out 1 or 2 batteries will reconfigure the bank but now your New batteries are limited by the crappiest of the Old batteries remaining.
    Your available 12v system is probably at around 14.4v while being charged via alternator. At 12v when truck is off. A few minutes of heavy loading on the inverter and it's down to 11 or 10v and every minute in that state is killing HOURS of life off the cells in the battery. (Actually it's # of charging cycles and depth of charging but nevermind all that lol...) It's damage is irreversible.
    Bite the bullet, buy a whole new set of Dual Purpose (deep cycle and CCA) batteries for the truck. Turn off the 120ac side All Day Every Day unless you're using it and when you do use it run the truck.
    Or put a harbor freight 2000w generator on the catwalk.
     
  8. Qbf594

    Qbf594 Road Train Member

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    What size wires are they.
    How long are the wires from the batteries to the inverter.
    Are the red and black wires at opposite corners of the battery lineup.
     
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  9. Spyro2112

    Spyro2112 Medium Load Member

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  10. HoneyBadger67

    HoneyBadger67 Road Train Member

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    Start with 4 new batteries. They do t need to be deep cycle, just get the big ones (950-1000CCA). Make sure your wires are at least 0 gauge and as short as is feasible.

    I can leave my truck off all night and still make 12c of coffee in the morning w/o cranking up the truck. That's with the apartment size refrigerator running all night.
     
  11. shooter19802003

    shooter19802003 Road Train Member

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    Gonna say 2 things. It's drawing too much current. So the wires are too small. Also batteries are prolly bad. Batteries in trucks don't last long at all. If you run an Inverter, you get about a year out of your batteries. Load test them and find out.
     
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