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Battery Tender

Battery Tender Junior 12V, 750mA Charger and Maintainer: Automatic 12V Powersports Battery Charger for Motorcycle, ATVs, and More - 021-0123

    • Based on 47,520 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Jan 24
Order within 13 hours and 57 minutes
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Features

  • STAY CHARGED: Battery Tender battery chargers and maintainers provide a full charge to your powersport vehicles battery before switching to float mode to maintain proper voltage levels for safe, long-term storage
  • EXTEND BATTERY LIFE: Compatible with all 12V lead-acid, flooded, AGM, and gel cell batteries. Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode) allows for optimization of battery power, without overcharging or battery damage. Smarter than a trickle charger.
  • INCLUDES: 12V, 750mA battery charger and battery maintainer with 12-foot output cord, fused-ring terminal harness for hard-to-reach batteries and alligator clip accessory cables, 5-year warranty, and lifetime customer support
  • SIMPLE & SAFE: Low maintenance, easy-to-use, universal battery charger is just 3.3 x 1.3 x 2.4 inches, 1 lb (charger only). Spark-proof circuitry ensures no-spark connections, and automatic reversed hook-up detection verifies correct connection
  • MONITOR POWER LEVELS: Two-color charge status LED light indicates the state of the charge and if the battery voltage drops too far under load, adaptive charging will resume full charger output power. Automatic charge cycle functionality switches to float mode after fully charging the battery

Brand: Battery Tender


Color: Black/Green


Product Dimensions: 1.3"D x 2.4"W x 3.3"H


Output Voltage: 12 Volts


Input Voltage: 12 Volts


Manufacturer: ‎Deltran


Brand: ‎Battery Tender


Model: ‎Battery Tender 021-0123


Item Weight: ‎1.3 pounds


Product Dimensions: ‎8 x 4 x 9 inches


Item model number: ‎021-0123


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Painted


Manufacturer Part Number: ‎021-0123-CA


OEM Part Number: ‎cc2851011


Safety Rating: ‎Não Aplicável


Amperage: ‎0.75 Amps


Voltage: ‎12 Volts


Date First Available: November 30, 2004


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jan 24

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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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Easy to use, and works great!
Got for my 2015 FZ-07. Super simple instructions, and works great. I like the lighting that tells you charging states as well as if the battery is bad. Very durable design. And the power output calls for a speedy charge, also love that you can keep it plugged in indefinitely while not in use.
Reviewed in the United States on December 9, 2024 by Hunter Johnson
    • Works good
Easy to use, built well. Indicator light works as intended. Compact in size. Keeps my motorcycle battery charged.
Reviewed in the United States on January 12, 2025 by Cameron Forshey
    • Works great indoors in attached garage
I'm a greenhorn at car-care, but this product was pretty much foolproof! I'm using it to keep the battery topped off for my family member's car, as she has just had surgery and won't be driving for 2 months. I do not need it for months and months of storage and maintenance, so the 2018-era reviews complaining about "now it only lasts for one year" after the manufacturer's move to China, really don't matter to me! I really appreciate the built-in safety feature of no sparking if you touch the clips together. Current won't flow through this product, even when connected to the outlet, until it senses 3 volts. This could make it hard to charge a TOTALLY dead battery with this product, but it worked perfectly for us. To put this thing together, you'll have to pick either small-ring connectors - which are for the non-car uses that will sit for over 6 months, like an ATV or motorcycle or boat - or the alligator clips, which are for cars and bigger engines that will be connected for just a few months. You'll also have to have color vision to discern between red and black, since the alligator clips confusingly have a (+) symbol on one side of their jaws. On the second jaw, they differ (+) and (-), so if you can't tell them apart at first glance The most difficult part for me was step 6e/f in the instruction manual - determine if your car engine has negative-ground or positive-ground status. Like I said, I'm a greenhorn here. Sure, the manual says "most cars" are negative-grounded, but I didn't want to mess it up, cuz car batteries are big hefty things you don't play around with. After real careful inspection, I found that the battery of our car had a wire going directly onto and behind the hefty metal of the vehicle body or "chassis" I learned it is called, which came from the (-) side of the battery. The (+) side had a complicated plastic cover over it, which made connecting the alligator clip a bit difficult, and that side's wire led to other engine parts. That's what made me 90% sure that the negative side was the "grounded" side. So I connected the (-) black clip to the (-) side of the battery, and the red clip to a nut-and-bolt part of the engine. I was able to close the hood on the car most of the way by turning the clips sideways and flat as I could. It's not latched at the moment, but sitting in our garage, it should be plenty protected from spiderwebs and dust and whatnot. No option in our case to thread the cable thru the front grille since it's pretty jam-packed with engine parts right behind it. My one complaint about this product is that the cable ending in the two alligator clips splits pretty close to the jaws end, and it would help to have it split further up, to help users reach a part of their engine block or chassis more easily. Also, I highly recommend addition of diagrams. There are words saying "connect wire to engine block or vehicle chassis, not sheet metal or fluid lines" but some of us need an illustration of what is a sheet-metal body part vs the vehicle chassis! Once connected to the engine, I turned my back on it just in case, to plug in the "wall wart" (credit to Mythbuster Adam Savage for that term) and the light turned steady red! This was encouraging, since when I had tested it earlier by plugging it into the wall with no connections made, it blinked red. So I was confident I did not have a defective wall wart box. 6 hours later, the light had turned blinking green, and 6 hours after that, it had turned steady green, which the manual says is the perfect state to leave it in for 'drip feed' of electricity to keep the battery operable while not in use. So I am perfectly satisfied! Our car's battery was diagnosed by a mechanic as "being on its last legs" anyway, so this comparatively cheap product, for 2 months of use only, is perfect for our needs. I'd recommend anyone with a really expensive car or battery that needs storage for 6 months or more do a bit more research and spend a bit more on it. ... show more
Reviewed in the United States on October 27, 2022 by MeepBeep
    • The Battery Tender Jr works well with my 2024 Polaris ATV.
The Battery Tender Jr is working well with my 2024 Polaris 570 Sportsman Touring ATV. The Battery Tender Jr has a built in plug that conveniently plugs directly into the battery charger receptacle in the wheel well or front light pod of a Polaris ATV. As designed, I keep the Battery Tender Jr plugged into my ATV and the wall outlet to keep my battery properly charged. Colored LED lights indicate the charge condition of the ATV battery. It is easy to setup, connect, and use. Buy with confidence. ... show more
Reviewed in the United States on November 11, 2024 by Shane-Lisa
    • Keeps my car battery charged while storing it over the winter - Set it and forget it
I use this to charge my car in the garage over the winter. This is important for those long cold winters in the garage where temperatures can get below zero Fahrenheit. Cheap way to keep your car and battery healthy. Keeps the battery charged and healthy in the off season. The long cord and quick disconnects are nice. I just put the one end on my battery in the care and leave it. Hang the quick connect out of the front and connect my car to the charger. I like that it has a really long cord and also the brick is on the wall. Does what it should well. Keeps my car charged over winter. A set it and forget it product. ... show more
Reviewed in the United States on December 20, 2024 by Jeffrey Byboth
    • Great value
Works great for my bike! Holds the power very well and easy to use. Well worth the money.
Reviewed in the United States on January 4, 2025 by Mary
    • Works perfect
Used this on my motorcycle battery. Easy to install, indicated low battery, charging, and fully charged/maintaining.
Reviewed in the United States on December 22, 2024 by Jonathan T. Hughes
    • excellent
Simple, out of the way, and does an excellent job. I take lead-acid batteries seriously, and charging them can be dangerous for various reasons... the gases emitted, the danger of explosion, etc. So I was a little reluctant to buy this to keep my riding mower battery charged when not in use. But it revived an old battery and seems to be perfect for maintaining that charge if you keep it attached. Small, simple, single-purpose and not too fancy – that is exactly what I like, in my whiskey, my women, my tools and my battery chargers. ... show more
Reviewed in the United States on November 14, 2024 by Bigh

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