Battery Tender Plus 12V 1.25 AMP Car & Motorcycle Battery Charger and Maintainer, Float Charge for Automotive, and ATVs - Smarter Than a Trickle Charger
Condition: New
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Tuesday, Dec 23
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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.
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
Manufacturer: Battery Tender
Brand: Battery Tender
Model: Battery Tender 021-0128
Item Weight: 1.45 pounds
Product Dimensions: 4.87 x 3.25 x 2.93 inches
Item model number: 021-0128
Is Discontinued By Manufacturer: No
Exterior: Painted
Manufacturer Part Number: 021-0128
Safety Rating: Não Aplicável
Amperage: 1.25 Amps
Voltage: 12 Volts
Date First Available: October 2, 2003
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Dec 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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
These battery charges really work fine. Once it brings your battery up to full power, it keeps it there, and never over charges it. I've uses these for many years when I rode a motorcycle, kept those batteries up to full power and never over charges them.
Reviewed in the United States on September 21, 2025 by Charles Domanski
Charger quality is excellent and perfect for maintaining my motorcycle battery while it’s out of the bike and in my house for the Winter. I really like that everything is automatic. Hook it up, plug it in, and it detects the type of battery you have and does what it needs to do to repair or maintain it. As nice, compact and easy to use as it is, I will plug it in to my bike daily during the riding season on to keep the battery maintained. HIGHLY recommend this quality product!
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Reviewed in the United States on November 20, 2025 by Main Monkey Business
12v battery tender works like a champ. 5 stars ! use this to charge and maintain two 110 amp hour deep cycle agm size 31 batteries on y camper. highly recommended
Reviewed in the United States on November 17, 2025 by Joel P Porter
This little device was top-rated, and I now know why. It's a simple design that just does exactly what it needs to do. It charges, and it tends my brand new battery during its off-season. It attaches securely, and nothing about it feels "cheap". You know what I mean: cheaper charger/tenders have cheap, thin cables and a cheap-feeling power cord. Not this thing. I can see its indicator lights from across the room, and don't be fooled by its light weight. Things don't have to be heavy to do their job.
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Reviewed in the United States on December 8, 2025 by Mark M
Great product, works great
Reviewed in the United States on November 24, 2025 by This is the worst company I ever seen they sold me a damaged bike and after a few rides the motor went out and they won’t fix it. JUNK!!!!!!!
The charger works like a charm! I live walking-distance to just about everything, so I can easily go a week at a time without driving. This, combined with an old OEM battery that needs replacement and living in an environment with cold winters, and I was jump-starting my car nearly every time I wanted to go anywhere. Realizing that the jump-starts were only addressing the symptom, I did some research and came up with a rather unique solution. Because I live in an apartment complex, I don't have a power outlet anywhere near my car. As such, I can't just hook the charger up to my battery and plug it in to a wall socket while securely parked in a garage. So, I use the same jump-starter (the Stanley J5C09 500 Amp Jump Starter) as a power source, a DC-converter (with a low-battery automatic shut-off - very important!), and this charger. I drilled a hole through the engine firewall, ran the charger's extension cable from the battery through the firewall into the cabin, and to the back seat. To charge the car battery, I plug the DC-converter into the Stanley, and the charger into the converter. I get a good 2-3 hour charge off the Stanley, and with the automatic low-battery shut-off on the DC-converter, I'm assured that there will not be a total drain of the Stanley, from which it may not come back. After charging my car battery, done bi-weekly, I bring the Stanley into my apartment and charge it back up, which usually takes around 24 hours. This setup has paid for itself several times over after only a few months! Because I'm not obligated to drive several hours a week just to keep the battery from dying, I save time and money every week. And with speculators constantly driving the price of commodities, including oil/gasoline, higher and higher, I'll continue to save a great deal of money with this charger setup, not to mention the fact that I'm not putting nearly as much CO2 into the atmosphere. And, finally, not having to jump-start my car anymore saves wear-and-tear on the engine and the hood-release cable, not to mention the fact that it makes driving trips that much quicker and easier.
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Reviewed in the United States on May 13, 2011 by RI_Mike
This battery maintainer has worked great for me. I have a 2008 SAAB convertible that is not a daily driver, but is always driven at least once every 7-10 days. I noted a potential power drain on the battery and have had it checked out by reputable mechanics at least 3 times and the power draw is always within "normal" tolerances. Rather than continue to buy a new battery every 12-18 months, I went with this battery maintainer and it does a great job keeping the battery charged and have had no issues. This is saving me hundreds of dollars in new battery costs.
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Reviewed in the United States on August 21, 2025 by Yorktown T
Perfect works like a charm .. keeps my RV charged up and ready to start
Reviewed in the United States on December 6, 2025 by allen t allen t