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Mower Killing Batteries!

Discussion in 'Mechanic and Repair' started by MikeTA95, Jun 28, 2012.

  1. MikeTA95

    MikeTA95 LawnSite Member
    Posts: 84

    Getting frustrated with this one,

    I was given a Toro sit down by a guy going out of buisness, he said I could have it because it was a "piece of crap." Turns out, it just needed maintenance (spark plugs, oil change, filters changed, grease, new blades). Mower was working great for a few weeks, then the battery died on a hot day (95 degrees). Replaced it with a new one, that one was fine until we had another hot day. Took it to a mechanic, he said he couldn't find anything wrong with the electrical system. Bought a new battery, was working great until today when we had another ninety something degree day, battery died again.

    I want to try and see if anyone has any suggestions, I have no knowledge about electrical systems, and my mechanic is no help.
  2. Snyder's Lawn Inc

    Snyder's Lawn Inc LawnSite Platinum Member
    Posts: 4,541

    safty switch on seat unhook or by pass if so it will run it down
  3. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Mike...need the model of the mower and the engine...
    Posted via Mobile Device
  4. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,244

    That doesn't have anything to do with killing the battery!

    Since the OP's knowledge of 12v is limited, I would say hunt ya down a good mechanic in your area. Try lookin on Craigslist. You don't need to take it to a dealer.
    But I digress........

    Sounds like a charging problem to me, either the alternator or regulator went out to lunch, or there's a problem in the charging circuit wiring.
  5. bob

    bob LawnSite Platinum Member
    from DE
    Posts: 4,254

    When mower is running, put a meter on the battery terminals. It should read more than 12 volts. Guessing 13-15 volts.
  6. BigFish

    BigFish LawnSite Gold Member
    Posts: 3,244

    Yeah, that's pretty much what it needs to be. YOU know that, and I know that, but the OP probably doesn't know anything about meters etc. His best bet would be to find a good wrench.
  7. pugs

    pugs LawnSite Gold Member
    Posts: 3,022

    Just out of curiosity what battery are you putting in it? What are the specs of the battery?
  8. MikeTA95

    MikeTA95 LawnSite Member
    Posts: 84

    Will this really kill the battery? I do have a bypass on the seat.
  9. MikeTA95

    MikeTA95 LawnSite Member
    Posts: 84

    Not sure of the specs of the battery, but it is a New Holland brand I believe, got it from the local tractor supply store. It is under warranty luckily
  10. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Help us out ....Mike...
    Just exactly what kind of mower and engine combo are we supposed to be troubleshooting??????

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