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Battery Tender

Battery Tender 022-0209-BT-WH Selectable Charger is an AGM/Standard or Gel/Lithium Iron, 12v or 6v Switchable at 4a, Includes Rings & Clips. It Will Never Over Charge Your Battery

    • Based on 2,053 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 23
Order within 14 hours and 26 minutes
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Features

  • 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

Description

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!


Brand: Battery Tender


Color: Black, Green


Product Dimensions: 3.33"D x 6.9"W x 1.91"H


Item Weight: 2.5 Pounds


Input Voltage: 12 Volts


Manufacturer: ‎12V


Brand: ‎Battery Tender


Model: ‎4A Selectable Charger is an AGM/Standard or GEL/Lithium Iron Switchable, 12v or 6v Switchable, Includes Rings & Clips


Item Weight: ‎2.52 pounds


Product Dimensions: ‎6.9 x 3.33 x 1.91 inches


Item model number: ‎022-0209-BT-WH


Exterior: ‎Brushed


Manufacturer Part Number: ‎022-0209-BT-WH


Date First Available: September 6, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Dead car battery can be charged. I did it twice.
Although the specifications for this product say that a fully dead battery cannot be charged, that this product just maintains charge. I did charge a dead car battery twice. It takes a special procedure, but no extra hardware. The reason that it does not work to simply plug in the Battery Tender, set battery type to AGM (normal car battery), set voltage to 12V, and then attach and charge when battery is dead is that the Batter Tender protects you from connecting the wrong way around to the battery by looking for some non-dead voltage from the battery, so that it can double check that you connected the black negative cable to the black negative battery terminal and the red positive battery cable to the red positive battery terminal. If the battery is dead, it cannot double check you and will pretend for a few minutes to charge the battery, followed by the upper-left blinking light of charging stopped. How to charge dead car battery using just Battery Tender: (1) Disconnect car battery positive red terminal from car electrical system by loosening the clamp and removing the cable. The Battery Tender for me failed to charge to 12V with the car connected, because the car electronics drew more power than the 12V Battery Tender electronics could supply in the case of low battery power. (2) With Battery Tender battery cables not connected yet, plug in the Battery Tender. (3a) Set battery type to AGM (normal car battery). (3b) Set voltage to 6V. This is key. Battery Tender does not double check correct polarity for 6V and will push current no matter what. (4) Attach negative black Battery Tender cable to negative black battery terminal. (5) Attach positive red Battery Tender cable to positive red battery terminal, which remember you have already disconnected from the car's electrical system. (6) Double check and triple check steps (4) and (5) to be absolutely sure you connected black to black and red to red. If you get this wrong, unspecified bad things will happen. This time the Batter Tender will not double check you. (7) The Battery Tender will indicate charging with solid upper right green light. (8) About 4 hours later the Battery Tender charging solid upper right green light will go off, and lower right solid green light will indicate full charge to 6V. Do not believe it. The battery voltage is 6V, but it is still lacking amps, and the slightest load will drop the voltage back down below the level that the 12V charging below will succeed. (9) After about 12 hours the Battery Tender will still indicate the same fully charged 6V, but by now enough additional power has been added to proceed confidently. (10) Disconnect the Batter Tender from the car battery. (11) Unplug the Batter Tender until the lights go out. (12) Plug the Battery Tender back in. (13a) Set battery type to AGM (normal car battery). (13b) Set voltage to 12V. This is key. Battery Tender having charged the battery to 6V will now be able to double check that when you connect it to the car battery that you are doing it the right way around. (14) Attach negative black Battery Tender cable to negative black battery terminal. (15) Attach positive red Battery Tender cable to positive red battery terminal, which remember you have already disconnected from the car electrical system. (16) Double check steps (4) and (5) to be sure you connected black to black and red to red, but now the Batter Tender will double check you. (17) About 4 hours later the Battery Tender charging solid upper right green light will go off, and lower right solid green light will indicate full charge to 12V. Do not believe it. The battery voltage is 12V, but it is still lacking amps, and the slightest load will drop the voltage back down below the level that car start will succeed. (18) After about 24-30 hours the Battery Tender will still indicate the same fully charged, but by now enough additional power has been added to proceed confidently. 12 hours is nowhere near enough. A day is a really long time, but remember that the Batter Tender was never intended to charge, just maintain, so it's output amperage is low. Although it will in time accomplish a battery charge, it will take a long time. Do not rush this step. (19) Disconnect the Batter Tender from the car battery. (20) Taking electrical safety care that you now have a live, powerful car battery, connect the car electrical system cable to the red positive terminal of the car battery. (21) I had to wait about 10-20 minutes before my car would respond. I think that some capacitors had to take time to charge before the car's electrical system was well again. (22) I first pushed the button for just the car's accessory mode to let all the systems reset themselves. The center console did some initial loading that it does not usually do. (23) Turn off the car, then start engine. All should be working for the moment, unless your radio thinks that with the power off for so long that it has been stolen and asks for an authorization code to work; your car dealer should be able to help you there; I did not experience this. (24) Drive the car for a half-hour or so to give the alternator time to top off the car battery. ... show more
Reviewed in the United States on February 17, 2022 by Boron
    • Works Great
I have three of these for machines that have limited start stop cycles-a larger hay tractor which only gets regular use in summer, a lawn mower that sits from Oct to March, and a mini excavator which sits long periods between use. They have a short harness to direct connect to the battery with a quick disconnect on the outside so it is very easy to connect it and plug it in after parking the machine. Battery is always at full charge and ready to go. I can't comment on the waterproof issue as I would not leave one of these outside but that is just how I roll. ... show more
Reviewed in the United States on September 17, 2023 by Hayman
    • Super happy with the 4 amp battery, charger, and maintainer
Review Image by SR SR
Review Image by SR SR
I have a brand new 2023 Mazda, CX 30 and I don’t drive that much (8 miles per week) and was very concerned about the battery going bad and all the sensors going off on me when it did go bad. So beginning with, I bought 1 then 3 solar battery chargers, different wattage, for my car and use the good old Florida Sun to charge the battery, but there was no way for me to actually see good results. So finally, I purchased a battery tender and maintainer 4 amp version, hooked it up without any issues and within one hour the green light flashed indicating that I now had at least 80% charge. I don’t have a garage so I have to be cautious of any possible rain and you know Florida it does rain a lot. So I am now using this battery retainer/maintainer and gave away my solar panels to charge my vehicle when I don’t use it that much approximately once a week. Now I feel bad about buying and wasting the money on those 3 solar panel battery chargers. I hooked up my unit and went inside and about an hour later it was at 80% charged, but I bet it could’ve been 80% charge within minutes after hooking it up as I have seen other reviewers report on this. Going from 80% to full charge took about three hours. I am very happy with this unit and I wish I had purchased it earlier on. ... show more
Reviewed in the United States on July 22, 2023 by SR SR
    • Quality
You get what you pay for in everything. Think about what you want this for and you will probably not want to skimp on this. For me it was for my Harley and I love it. Nothing more to say, product speaks for itself.
Reviewed in the United States on September 9, 2023 by Amazon Customer
    • Maintains Momma's corvette!
EZ install. Plug and play. Keeps her corvette battery in tip top shape. Hasn't failed yet.
Reviewed in the United States on September 16, 2023 by Jimmy Sanders
    • Great for keeping the charge
My grandfather has an older truck that he can’t drive that much anymore and this has kept the battery from being dead when he’s ready for a drive. It’s been a great investment!
Reviewed in the United States on August 28, 2023 by akwright77
    • Fantastic
Review Image by John T. John T.
This works fantastic. Love it. Hooked right up to my 66 mustang adjusted itself, the outcome, Well the picture says it all, fantastic product. Love it. Thank you so much.
Reviewed in the United States on August 14, 2023 by John T. John T.
    • Nice but falls short in a couple areas
Overall it's a nice charger / maintainer but here are a couple things I found out that I couldn't find before ordering. Power cord to charger is about 6 feet long. Cord from charger to vehicle (that has quick disconnect at the end) is about 6 feet long. I park this vehicle outside my garage so I also bought a 12 foot extension. It comes with 2 different cords that attach to the quick disconnect (about 1 foot long each). (1) A cable that has round battery terminal rings to attach more permanently to the battery. I have a side post battery and the ring openings are too small to work for me and wouldn't work if the opening was larger anyway because the plastic connector to the ring will not allow the battery cable to seat properly to the battery. Very common car battery IMO. Now I have to figure out a work around (nobody at the mfg ever caught this???) . (2) A cable that has clips like a traditional battery charger. The way the clips are designed is total crap for a side post battery. When I get one to hold onto the battery post it comes off when I'm trying to get the other one to stay on. Hope this helps if you're looking to purchase. ... show more
Reviewed in the United States on August 4, 2023 by D Trip

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