Schumacher Electric 3-in-1 Battery Charger and Maintainer for Car Marine

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1. Smilin’ John Verified Buyer – 17 March 2024

   I use my pickup truck so infrequently it’s nearly new battery lost it’s charge. This charger will charge your battery up to full charge at low amperage, and then keep it charged fully with no attention required from you. You hook it up, observing the directions and safety suggestions provided, and you can forget it. It does not generate any heat which often shortens the life of any electrical appliance. Great buy compared to battery replacement caused by insufficient use.
   

2. AbbyKay Verified Buyer – 21 April 2024

   I store a car that has a gel-type battery for 3 months every year. These are expensive batteries and if they go dead, so I’m told, the battery is destroyed, so keeping them charge is critical. The car manual says the car must be driven monthly to maintain it and after 6 weeks, the battery is “gone”. This is a very affordable charger to maintain the battery. Setup is pretty easy – plug it in, then choose whether utility or full-size battery, then type – conventional, gel, etc. It does a voltage check, then goes into charge mode until “full”, then maintain mode. The only problem I had was our power went out for a day – I received an outage/restart alert from my power company, that’s how I knew. After the power came back on I had a friend check the charger since I was still out of town. Charger came back on and remembered or detected gel battery – probably the most important thing. But, the default was a utility-sized battery. I do not know if this setting could maintain the car battery, which is my next concern. My friend changed it back to the full-size setting, so all is well. But, I need to do more research to “trust” this charger for extended times if it’s going to revert to the wrong battery size. The car seems to have a pretty significant draw when sitting there and never gets to maintain mode, so I just am not sure of the effectiveness of the utility setting on this car/battery.
   

3. Gary B. Verified Buyer – 22 May 2024

   I use it on my 2023 BMW R 1250 GS – 1.5 amp

   

4. Pete May Verified Buyer – 16 July 2024

   I used this to charge the battery of a car that hasn’t been used in about 6 months. Before charging the battery read 1.7 Volts. After about 24 hours of charging it appears to be fully charged. The indicator lights are a bit of a challenge to understand as the ‘clamps reversed/bad battery’ light was initially on, but that eventually went away and just showed Charging, and then finally the green Charged light illuminated. Curiosity got the better of me and I immediately voided my warranty by opening up to take a peek inside. I’ve included a few photos of the circuit board inside for anyone who might also be curious…

   

5. Anonymous Verified Buyer – 10 January 2025

   Good, inexpensive charger/maintainer. I use it on my ‘03 Harley Davidson Road King to keep the AGM battery at the proper rate of charge between rides. Works great for my needs and I highly recommend it.
   

6. Teresa S. Fugate Verified Buyer – 25 January 2025

   I needed this!
   

7. C. Smith Verified Buyer – 27 January 2025

   I bought this charger as a less expensive option to the “John Deere” one available. It is very lightweight with an all plastic enclosure, but I’m hopeful it will to the job over the winter. There are no switches and just a minimum of status information on the front display.

   

8. David Verified Buyer – 1 February 2025

   Nice unit. Easy to use.
   

9. Denise Lemieux Verified Buyer – 10 February 2025

   works well and keeps 4 wheeler charge.
   

10. Anonymous Verified Buyer – 23 February 2025

    Qualité-prix répond à mes attentes.
    

11. diesel85 Verified Buyer – 12 March 2025

    This is my second one of these units. My first one I bought many years ago is still working just fine. I just wanted another unit to charge more batteries elsewhere. I keep the first one on my Harley, and this one will be used to charge random 6v/12v batteries.
    

12. Allan R Verified Buyer – 19 March 2025

    works well and they are super to deal with ! Love the charger maintainer !
    

13. Anonymous Verified Buyer – 22 March 2025

    I already have this same charger that I bought a few years ago and decided to get another one. This is an upgrade from my old one. It will detect 6 or 12 volt battery, reverse hook up and will switch to maintenance charge from full charge automatically. At first the unit detected a bad battery after a couple hours charging. My old charger had no problems with the battery ( it was new ) after a couple days it is now working like a champ
    

14. Heath B. Verified Buyer – 22 March 2025

    I have 3 of these, and one older style. I use 2 in vehicles not used very often, I use one on my motorcycle battery over winter on a timer so it runs for 30min a day. And one in my truck with a weak battery, I have a new battery but at -20 or colder, I’m to lazy to swap it out so when parked over night or at work I use this to keep the battery good enough to start to drive.

    The bonus is it’s totally automatic, plug in, turn on. Unlike some others where you need to hit a button to start charging, so this works reallllly well on timer.
    

15. Jesus is My Saviour! Verified Buyer – 5 April 2025

    We got 2 and we are very happy with it, the price was very good we will buy more when we are on sale at 18$ each. the package came on time and in perfect condition, hubby will use it for the motorcycle and the summer car over winter.
    

16. Clarence parks Verified Buyer – 7 April 2025

    Great product