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Battery Tender 4 AMP Car Battery Charger and Maintainer: Switchable 6V / 12V, Automotive Battery Charger and Maintainer for Cars, Trucks, and SUVs, Lead Acid & Lithium Battery Charger – 022-0209-BT-WH

(10 customer reviews)

STAY CHARGED: The 4 amp car battery charger automotive provides a full charge to your machine’s battery before automatically switching to float mode to maintain proper voltage levels for your battery without overcharging
FULLY SELECTABLE: With the push of a button, easily switch from AGM or flooded and lithium ion (LiFePO4) batteries to provide and maintain an optimal charge level for 6 and 12 volt batteries alike
HIGH POWERED: 4 amp switchable car battery charger automotive delivers a powerful charge to keep your car, SUV, pickup truck, or boat battery at peak performance by providing reliable engine starts and extended battery life
EASY TO USE: A low maintenance design that’s quick and simple to use, our switchable automobile charger and maintainer is compact and lightweight to operate everywhere, even in small storage spaces
SAFE AND SECURE: Our car battery charger automotive and maintainer is spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power. 5 Year Industry Leading Warranty

$91.63

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SKU: B07XMJDJX7 Category:

The fully automatic 4 Amp Power Tender is a top-of-the-line 12V or 6V switchable battery charger, perfect for automotive, motorcycle and marine repair and maintenance shops. Float / maintenance function maintains batteries at proper storage voltage without the damaging effects caused by trickled chargers. The integrated smart controller assures that your battery is charged safely and correctly at all times through our ISM (Infinite Sequential Monitoring). The ISM adapts to the battery�s needs hundreds of times per second to deliver the proper amount of charge. With reverse polarity protection and spark-proof operation, you can connect it and forget it!

Specification: Battery Tender 4 AMP Car Battery Charger and Maintainer: Switchable 6V / 12V, Automotive Battery Charger and Maintainer for Cars, Trucks, and SUVs, Lead Acid & Lithium Battery Charger – 022-0209-BT-WH

Weight 2.52 lbs
Dimensions 6.9 × 3.33 × 1.91 in

10 reviews for Battery Tender 4 AMP Car Battery Charger and Maintainer: Switchable 6V / 12V, Automotive Battery Charger and Maintainer for Cars, Trucks, and SUVs, Lead Acid & Lithium Battery Charger – 022-0209-BT-WH

3.6 out of 5
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  1. Irma A.

    UPDATE UPDATE UPDATE! February 15, 2020… We figured if the light was flashing on the tender, it had to work! , we decided it could be one of the batteries on the RV. We took both off and checked them, sure enough one was very low. We purchased a new battery. And, we reconnected the tender, and it worked like a charm… going on Two winters now! I recommend and would purchase again! Hope this helps someone!!! UPDATE!!!! It was good until… read below!! So far so good! We already winterized our RV. It appears to be working properly. And as of right now we are happy with it. UPDATE!!! We just noticed this whole time apparently the battery tender is blinking from red to green. When we replug it in, it stays red. This is not good we need for this to work for us this winter. I will be contacting the company. So disappointed right now. We never got it to work. And The company said we could not return it because the time was passed for the time to return it. To my recollection it was not much time passed.Read more

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  2. David Louis

    I purchased the 4 AMP Battery Tender in January, 2019 on amazon and it worked for just under 90 days and then died. I paid $15 for USPS Priority Mail postage and returned it back to manufacturer in Florida, and they verified it was dead and sent me a new unit. The new 4 AMP Battery Tender worked for three days and then began to mal-function. I called the manufacturer support and was told they don’t know what is wrong with the unit. I then trashed the unit and moved on.Read more

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  3. VeteranOwner

    Battery Tender 12V 5A DO NOT USE THIS PRODUCT MAY CAUSE FIRE IF LEFT UNATTENDED I started using the battery Tender 5 AMP because my 1.25 amp was taking too long to charge my vehicle battery. Battery Tender was steady orange/red when I last looked after about 20 mins of charging. I took a nap and came back few hours later to find the box green flashing showing the battery was fully charged but extremely hot to the touch. I took off the battery tender right away. Next time I attempted to charge the battery it would only flash orange/red, meaning the battery was not outputting any power to my battery. The alligator clips were not working as well, so I bought a new pair with the same 7.5 amp fuse as before. After trying the new working alligator clips I noticed there was a burning smell coming from the 5 amp Battery Tender. I quickly unplugged the 5 amp battery charger and put it to the side. I then tried the 1.25 amp battery tender with same alligator clip and it showed a steady orange/red and worked like it supposed to. I used the 5 AMP Tender ONE time, and I concluded it is not only terrible quality junk but also very dangerous. IF there is an expectation for users to stop charging immediately after the battery is fully charged, I would say that is ridiculous expectation by the company.Read more

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  4. T. Rider

    I have always been a fan of Battery Tender and own several of the 1.5 amp and .75 amp models. And over the years they have worked exactly as advertised. I have automobile and tractor batteries that have been in use for over 10 years and still going strong. This 5 amp unit is the best of the bunch. The one disadvantage to the other units was they were a bit slow in recharging a deeply discharged battery. This solves that problem. The only suggestion I have is if you plan on mounting it on a wall. The package does not come with mounting screws. You will need to get 2 #6 by 2 1/2 inch screws from your hardware store to complete the mounting process.Read more

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  5. Old Jarhead

    I put this on a Winnebago diesel pusher that did not have the factory installed trickle-charging device. Unlike many battery chargers that you have to closely monitor to avoid overcharging and damaging the batteries, these chargers are perfectly suited for maintaining the batteries in a stored vehicle. They are designed so that you can leave them attached when it is time to operate the coach. All you do is unplug the unit from the 110 VAC outlet and then remove and stow the power cord until you get ready to put the coach back into storage. After three months in storage, the two engine batteries were perfectly charged. A separate unit on the two house batteries also kept them charged without any boiling out of the acid/water. Solved a big problem and protects the batteries from damage by regular chargers and avoids dead batteries from parasitic drains while in storage.Read more

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  6. Joseph

    I have a cloud enabled dashcam that runs 24/7, with a parking mode. Since it uses the car battery, I needed a way to ensure the battery remains charged/maintained. This is doing the job well and I like that it is easy to have permanent connection to the battery with a quick connect plug, so that it’s easy to connect / disconnect going from / to work. There is no room under the hood to have this or any other maintainer permanently mounted to the car. After plugging it in after a 10 hours away only takes about 15 minutes between charging and maintaining. I had the 1.5 Amp version initially, but it died after about 9 months of use. Warranty was such that the cost difference to get it fixed by shipping to the US vs. buying a new one, made purchasing a replacement the best option. I’m hoping this one lasts longer.Read more

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  7. Amazon Customer

    I have other battery chargers but didn’t have an 8V charger. I needed this specific charger to maintain and fully charge the 8V batteries which are the power source for my electric Club Car golf cart. During the winter months I remove the batteries from the Golf Cart for storage in my garage. Since there are 6 separate batteries (8V each) this charger works great to keep each battery fully charged during the winter months. I rotate charging each battery as necessary. This is a great product and I would highly recommend.Read more

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  8. Meestro

    This charger saved me from having to buy a new 8volt battery that I use in my 6-volt Model T positive ground system. The 8 volt battery makes the car crank that much faster and the lights are brighter. The battery charger maintains the battery in good condition in a car that is not driven on a daily basis or during the winter. I also use one for winter maintenance on a six volt battery and one for my 12 volt marine battery over the winter. Just plug in and forget about it.Read more

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  9. Pav

    Its a battery charger, not much too it. Came with alligator clips and terminals, the terminals fit nicely under the 10mm and even 12mm nuts on my battery. Cable nice and long on the charger and kept minimal on the terminal side. Changed my review to 1 star as this is the second battery completely flat and the vehicle has been sitting in the garage. I have no explanation for thisRead more

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  10. JC Mexico

    Un poco grande de tamaño, pero al igual de gran amperaje. El único problema que le encontré es que el cable se calienta en la parte que conecta con los cables de la batería. Sobretodo cuando está en modo de alto amperaje. La puse para cargar una batería AGM de un Mini Cooper que tiene el sistema de encendido/apagado (start/Stop) en los altos y qué pasa largas temporadas guardado. Funcionó de maravilla. He tenido varios artículos de esta marca y me parece muy buena.Read more

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    Battery Tender 4 AMP Car Battery Charger and Maintainer: Switchable 6V / 12V, Automotive Battery Charger and Maintainer for Cars, Trucks, and SUVs, Lead Acid & Lithium Battery Charger – 022-0209-BT-WH
    Battery Tender 4 AMP Car Battery Charger and Maintainer: Switchable 6V / 12V, Automotive Battery Charger and Maintainer for Cars, Trucks, and SUVs, Lead Acid & Lithium Battery Charger – 022-0209-BT-WH

    $91.63

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