• out of stock

12V Car Battery Charger - $9 (Was $27) @ Kmart

1280

A cheap car battery charger that seems to be heavily reduced at the moment. I'll be giving this a go tonight to see how it goes. It seems to have really good reviews. Stock varies between stores.

Battery charger
AC 220-240V, 50Hz
Voltage output: DC 12V 2A
3-phase charging cycle
Takes 44 hours to charge a 70Ah empty car battery
Ideal for charging 12V automotive lead acid batteries with a capacity range between 15-80Ah
Instruction Manual
Tested to applicable Australian electrical safety standards and certified as

Related Stores

Kmart
Kmart

closed Comments

  • +6 votes

    I bought one of these a while ago when a Amazon one failed. This kmart one is legit works well, has been charging the small sized battery in my evo perfectly would definitely recommend considering the price, even if it wasn't on sale

    • +2 votes

      Good for 9 bucks, for 27 aldi has one that I think is 6 stage and 4A

  • +1 vote

    Only 2A current. Probably only good to trickle charge car battery.

  • +1 vote

    If I left my car light on, can it be use to jump start the car? BTW, low or no stock in a lot of places.

    • +1 vote

      I think you're after a jump starter.
      eg https://www.ozbargain.com.au/node/637134

      • +2 votes

        But if I use the Kmart one and charge the battery for 8 hours, the car will be able to start again, right?

        • +1 vote

          Yeah whats the use for this when you can jump start?

          • +2 votes

            @Circly: WFH these days, car hardly get used. Have my CTEK MXS5.0 plugged in to top up the battery essentially.

          • +1 vote

            @Circly: It’s bad for the electronics I never jump start

            • +1 vote

              @TightBungholio: Never had a single electrical fault jump starting several cars I’ve owned for not driving them often enough.

          • +5 votes

            @Circly: After you jump start, itll need to be run in for a long time to charge it. This will help instead.

      •  

        Thanks, I was thinking about buying but you reminded me this is a slow charger not a jump starter for emergency.

        •  

          great question mate. I had similar experiences. Ended up having to use a second car with just the cables.

        •  

          For jump starter you need one like this.

      •  

        So in what cases will the 12V car battery charger be used?

        • +4 votes

          For a car that isn't driven much or for long enough
          A car that has been put into storage but you don't want to disconnect the battery
          A car that has dashcam and gps tracker that doesn't get driven much.

  • +1 vote

    Is this a multi stage or just bulk/dumb charger?

    • +4 votes

      Says 3 phase, assume means stage

  •  

    Saw this in store didn't buy

  •  

    Dogdanggit i was in Kmart half hour ago.

    This cost cheaper than their automatic soap dispenser. Yay!

    • +1 vote

      You can run the dispenser on a car battery then

  •  

    Does this do a float charge when finished?

  •  

    Would it be a good charger for a 100AH deep cycle battery?

    • +1 vote

      from the description:
      "Ideal for charging 12V automotive lead acid batteries with a capacity range between 15-80Ah"

      • +2 votes

        It would do it but just take really long

      •  

        Ah thanks for that, must have missed it when reading through

    • +1 vote

      "Takes 44 hours to charge a 70Ah empty car battery"

  •  

    I just read online, so is this good for charging battery of the car if I don't drive the car everyday, or if I don't drive my car for a week?

    •  

      Yes

  • +11 votes

    https://wagan.com/blogs/news/the-9-stages-of-battery-chargin...

    Difference between 3 stage and 6 stage and 9 stage in this article.

    Mainly: 3 stage has charge to 80, slow charge and then trickle charge at 95%.

    6 stage has evaluation and reconditioning cycles to de-sulfate batteries.

    9 stage has a recovery charge to charge deeply discharged batteries, and pulse mode to desulfate plates.

    •  

      to de-sulfate batteries

      Many chargers have claimed to de-sulfate batteries, but I've never heard of any reviews testing this functionality.

      There are plenty of people saying that de-sulfation is snake oil and doesn't work, has anyone here ever tried recovering a battery that wasn't used for six months or so, and did it work?

  •  

    I don’t drive much, in an average week I would drive 2-3 times.
    Once a week is a 2x 30mij drive on freeway. The other 1-2 times we drive is only 2x10 min drive to shops.

    Should I be using one of these to charge the batteries since I’m not driving enough?

    • +1 vote

      No, driving once a week is plenty enough to keep the battery charged

      •  

        Driving once a week for a short trip ain't gonna do it though.

    • +2 votes

      For $9 I would do it. Your car alternator will keep the battery sufficiently charged but likely not fully charged, and fully charging batteries prolongs their life.

      https://www.centurybatteries.com.au/technical-support/maximi...

  •  

    Can this be used to charge kids car?

  •  

    Bought one, plenty of stock in Toowong, QLD

  •  

    Takes 44 hours to charge a 70Ah empty car battery…
    A flat battery is considered to be 12.0V or lower.
    Fully charged is 12.6V or above.
    44 hours to go from 12.0V to 12.6V is crazy slow…

    • +2 votes

      Fully flat is less than 12V, more like 10.

    • +2 votes

      10.5v is "flat" if you research elsewhere.

    •  

      https://www.centurybatteries.com.au/technical-support/maximi...

      My comment was based off the information on this website…

      Would be good to know what they define as "empty".

    •  

      44 hours to go from 12.0V to 12.6V is crazy slow

      That's with a 70Ah battery, which is a big battery. The battery for a small car is typically 35-40Ah, average cars 50Ah. 70Ah would be for a large vehicle, or for vehicles with diesel engines (takes more power to start a diesel).

      This charger is more for maintaining the battery in a car (or golf cart etc) that is infrequently used. Let it run overnight, about once a month.

  • +1 vote

    anyone know if this is suitable to recharge one of these?

    https://www.bunnings.com.au/century-battery-1270l_p0097912

    •  

      Perfect for those.

  • +1 vote

    If anyone finds these in Perth I'd take 2 or 3 but depsite being "green" store stock I can't do click n collect or delivery. Argh.

    •  

      if getting 2 or 3 then try click and collect order?

      … whoops didnt read ur last part

  • +1 vote

    I think I will stick with a jump starter if my battery is drained and driving the car for 5 minutes.
    This battery charger sounds a little more inconvenient to use.

    • +4 votes

      Lead Acids really, really don’t like being fully drained. However, best of luck if you want to keep jump starting and replacing your batteries constantly.

      • +1 vote

        In fact it's beyond that - they are only happiest when fully charged. I had a Mazda MX-5 that was only driven occasionally and kept it on a charger at other times. When I sold it at 11 years old it was still on the original SLA battery.

    • +1 vote

      This is a misunderstanding of what it is; it's a trickle charger. You can leave the charger on the battery forever so that when you want to drive it's ready to go..

    •  

      Same here.
      I would rather avoid having my bonnet open under a carport for god knows how long when I can just jump start and go for a long drive. Car to car is no longer necessary either when you have portable power bank jump starters.

      •  

        Main advantage I found with using the CTek trickle chargers is substantially longer battery life.
        Car batteries don't seem to like going flat then being jump started.
        I just replaced a battery that was 8 years old & on a Ctek & the Battery guy said it was extremely rare for a battery to last that long.

    •  

      Driving for 5 minutes won't charge the battery properly, either will idling it for 15 minutes.

      These chargers top the battery to 100%, most alternators won't even do that, and battery life is extended when batteries get 100% top up.

      I drive reasonably so don't need mine connected all the time, but once a month I'll just connect it overnight to give it a good charge. Hardly an inconvenience.

  •  

    @OP - How was your expectations/testing? Also would you know how long a charge can take?

    •  

      I imagine expectation was that it would work as decribed and has AU warranty from b & m local store.

      In description mentions 44 hrs to charge a 70 Ah from flat to full, so ajust up or down for yours.

      Considering the price of normally $27 or now $9/$12 C&C then it is great as a basic, casual but slow back up charger.

      • +1 vote

        Awesome thanks for your response! Must've missed the 44hrs part haha

  • +2 votes

    Got one for the ride on mower… after i didn't disconnect properly and drained the battery.

  •  

    Out of stock online and in most stores around Sydney

  • +1 vote

    Thanks OP!