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Battery Tender

Battery Tender Plus 12V 1.25 AMP Car & Motorcycle Battery Charger and Maintainer, Float Charge for Automotive, and ATVs - Smarter Than a Trickle Charger

  • Based on 21,560 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Sep 2
Order within 14 hours and 51 minutes
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Features

  • Adaptive Smart Charging: Our battery maintainer adapts to the needs of your 12V battery, ensuring optimal charging and extending battery life. Ideal for Automotive, Motorcycle, and Lawn Mowers.
  • 4-Step Charging Program: This 12V battery charger safely charges and maintains your battery utilizing a 4-Step program to promote optimal battery health. Smarter than a trickle charger.
  • Includes: 12V, 1.25 AMP battery charger, fused ring terminal and alligator clip accessory cables, 10-year manufacturer's warranty, and lifetime customer support.
  • Quick Disconnect Harness: Easily connect and disconnect with our quick disconnect harness. This 12V battery charger makes maintaining your battery hassle-free, ideal for those who appreciate convenience and efficiency.
  • Two-Color Charge Status: Solid state two-color LED light indicates the state of the charge and if the battery voltage drops too far under load, charging will resume full charger output power.

Description

Battery Chargers, Jump Starters, Solar Chargers, EV Chargers, and Battery Maintenance Accessories Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Plus 12V, 1.25 AMP Junior 12V, 750mA Junior 12V, 1 AMP Lithium Plus 12V, 1.25 AMP Plus 6V/12V, 1.25 AMP Plus 2-Bank 12V, 1.25A 6V/12V, 2 AMP Lithium What makes the Battery Tender Plus different from the Battery Tender Junior model? The Battery Tender Plus delivers 1.25A vs. 750mA on the Junior for faster charging and recovery. Ideal for larger motorcycle batteries while providing the same safe float maintenance for long-term charging. Can I use this on my car battery for long-term storage? The Battery Tender Plus 1.25A is a top choice for maintaining car batteries during storage. Ideal for classic, seasonal, and weekend vehicles, it safely charges and maintains batteries with a 4-step smart system that prevents overcharging. Is the Battery Tender Plus good for a diesel truck or generator? The Battery Tender Plus 1.25A works for generator batteries and maintaining diesel truck batteries, but large diesel battery banks may charge slowly. For faster recovery, a higher-output charger like the Battery Tender 10 AMP is recommended. Can I use the Battery Tender Plus on a Porsche, Ferrari, or Lamborghini? Yes, Battery Tender Plus 1.25A is ideal for exotic and performance cars with AGM batteries, including Porsche, Ferrari, Lamborghini, and McLaren. It safely maintains infrequently driven vehicles and helps protect costly OEM batteries during storage. Is this UL listed and certified safe for home use? Yes, the Battery Tender Plus is UL listed, meaning it meets US electrical safety standards for fire, shock, and construction safety. It’s designed for safe home garage use and trusted by major retailers and vehicle owners nationwide.

Brand: Battery Tender


Color: Black


Product Dimensions: 2.9"D x 2.15"W x 4.4"H


Item Weight: 1.45 Pounds


Output Voltage: 12 Volts


Output Voltage: 12 Volts


Input Voltage: 120 Volts (AC)


Current Rating: 1.25 Amps


Amperage: 1.25


Connector Type Used on Cable: Alligator Clips, Ring Terminal


Number of Ports: 1


Item Dimensions D x W x H: 2.9"D x 2.15"W x 4.4"H


Item Weight: 1.45 Pounds


Specification Met: CE, ETL, FCC


Color: Black


Brand: Battery Tender


Mfr Part Number: 021-0128


Global Trade Identification Number: 80


UPC: 731215361777


Manufacturer: Battery Tender


External Testing Certification: Não Aplicável


Built-In Media: Battery Tender 021-0128


Item Type Name: BATTERY_CHARGER


Model Number: 021-0128


Warranty Description: Manufacturer Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 2

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.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great Charger That Saves You Money Over Time
Highly recommend the Battery Tender Plus 12V charger and maintainer. I currently have two of them and will probably end up buying a third—they’ve been that reliable. They do a great job of keeping batteries charged and maintaining battery health, especially for vehicles or equipment that sit for periods of time. It’s really helped extend the life of my batteries and saved me money in the long run. They’re simple to use, dependable, and just work exactly as they should. If you’re looking for a solid battery maintainer, this is a great choice. ... show more
Reviewed in the United States on June 14, 2026 by Mitch
    • "The Knight in Shining Armor for Dead Batteries!"
Review Image by Rich Gee
Let me tell you, folks, the Battery Tender Battery Charger and Maintainer is like having a superhero for your battery-powered gadgets! It's the Batman of battery chargers - mysterious, effective, and always there when you need it. I bought this little gem after my car battery decided to take an unexpected vacation in the middle of nowhere. I mean, who doesn't love being stranded with a dead battery, right? Well, thanks to the Battery Tender, those days are gone! It's like a personal trainer for your battery, keeping it in tip-top shape. The setup was so easy, even my cat could do it. And he's more interested in chasing shadows than reading instruction manuals. The charger is so intuitive; I'm pretty sure it winked at me when I connected it right. Let's talk about speed. If this charger were a sprinter, it would give Usain Bolt a run for his money. It charges faster than I can decide what to have for dinner, and I'm notoriously indecisive! And the maintaining feature? Oh boy, it's like having a battery babysitter. It keeps my batteries healthy and full of life, like a fountain of youth. I half expect my car to start giving me life advice every time I turn it on. In conclusion, if you want to be the envy of all your gadget-owning friends, get yourself a Battery Tender Battery Charger and Maintainer. It's the best thing since sliced bread - if sliced bread could jump-start your car and keep your gadgets alive! Highly recommend for anyone who hates being stranded or loves their gadgets more than their morning coffee! ... show more
Reviewed in the United States on December 11, 2023 by Rich Gee
    • Love them.
I have several of these, they last forever and do the intended job very well.
Reviewed in the United States on May 23, 2026 by Dick H.
    • It does its job, and then some!
UPDATE -- It's now been 3+ years since I purchased this battery tender, and I couldn't be happier with it. I've continued forgetting to start up my vehicle, so I've continued needing to charge its battery. Much to my surprise--and delight--I found that the Deltran Battery Tender *WILL* indeed charge a completely dead battery! Yep, I know it will, because I've now done it several times! In each instance I simply hooked it up and left it for about 12 hours. I have no idea how much of that time it actually needed, but by the 12 hour mark my battery was charged. This is in a Toyota RAV4. I LOVE this thing! ----------- original review ----------- Because of ongoing illness, I rarely leave my house any more. Despite my best intentions to start up my vehicle every few days...or once a week...or...whatever, its battery kept dying...because I didn't start it up often enough! I finally decided there had to be a better way to deal with this than continually getting the battery charged. That's where the Battery Tender Plus comes in. I did some research to look for possible solutions, and once I learned about battery tenders, I was pretty sure I'd hit on a good one. Keep in mind that I'd never used, never even HEARD about, battery tenders before. So I plunged in a little prematurely when I ordered this one. Let me explain. I was in such a hurry to get one that I didn't bother reading all the fine details about all the different tenders I viewed. I read good reviews and saw good ratings for this particular brand, went to their web site, found the correct voltage for my vehicle, and then ordered it. It wasn't until my friend and I were installing it that I realized it wasn't really suited, logistically, for my particular situation. I park my vehicle in my driveway [because there's no room in my garage *sigh*]. Once we attached the tender we realized I'd goofed. When it's attached to the battery, the hood of the car cannot be closed all the way. It's a combination of the clips adding height to the battery AND having the power cord hanging out. You're not supposed to let the charger get wet, as in being outside in the rain, so we were kind of stumped. This model was clearly intended for a vehicle stored in a covered structure, where the hood could be left up and the charger wouldn't get wet. Before deciding to send it back, we thought we'd try doing a little rigging to make it work. I pulled my SUV all the way up to the garage door, then we stuck the charger inside the garage and let the door down gently; the power cord fit under the door without being touched, so that was fine. I have a Toyota RAV4, and its battery sits IMMEDIATELY below the windshield; its cover actually forms part of what you see as the exterior of the car, i.e., if you're looking at it from the front, the part just below the windshield wipers actually consists of the battery cover on one side. Because we couldn't get the battery cover back down into its normal, flush position, we could see that this would be a problem letting rain in. We put the hood down [almost all the way], being mindful not to crush the cord. Then we took a plastic bag, covered the area where the battery cover is, anchored the bag under a windshield wiper, stuck something on top of the bag to keep it from blowing off, and, voila!, problem(s) solved. :) If I had it to do over again, I'd definitely do a better job of researching the different styles battery tenders come in. I'm assuming there are self-contained units meant to be left installed at all times, with the hood shut, on vehicles not stored for months in a structure, only plugging/unplugging their power cord as needed. But live and learn! Note that although the instructions strongly warn against using an extension cord "unless absolutely necessary," the supplied cord is ridiculously short. Personally, I don't have a GFCI outlet right next to my vehicle, so I had no choice but to use an extension cord. The tender is working as expected. Its manual explains what its various lights signify when they're flashing or solid. If I remember correctly, the manual says that the tender will NOT charge a dead battery. So if your battery is dead, get it charged first and then hook up the tender. (See UPDATE above!) ... show more
Reviewed in the United States on January 9, 2013 by Agatha Coronado
    • Battery Charger
I have had this Battery Tender for 4 years now and it works Great. I have had the so called smart chargers from another maker and I used them once and they did not work the second time. I wouldn't waste my time with others Spend a little more and get this charger and only buy once.
Reviewed in the United States on June 20, 2026 by Bridgette D.
    • Stood the test of time
Purchased this battery charger for my H/D and worked perfect. I now use it for my Duramax diesel truck periodically to keep the battery at full charge after too many short trips. Moved to Texas and with the heat and winter cold I use it at least 2 times monthly to top off my batteries and keeping them charged to proper voltage. This charger has been through a lot moving but always worked. Very sturdy metal case. 4 stars because it is getting old in design but so am I. 15 yrs old still working! ... show more
Reviewed in the United States on June 4, 2026 by Mark Kievit
    • Works as intended
Review Image by Amazon Customer
Review Image by Amazon Customer
Works as it should. Keeps the ol girl charged during the winter. Had a previous one from battery tender that started flipping from charged to not charged. It was a decade old but while looking i found it cheaper here and works great. Easy install literally take it out of the box and go. Extra accessories included for multiple charge options. ... show more
Reviewed in the United States on May 1, 2026 by Amazon Customer
    • Absolute best for a motorcycle
Absolutely awesome product, used on my 2026 Harley Street Glide. I've never owned anything so easy. Plug in and forget about the rest.
Reviewed in the United States on June 22, 2026 by J Smith

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