Battery Tender Junior 12V, 750mA Charger and Maintainer: Automatic 12V Powersports for Motorcycle, ATVs, and More - Smarter T
4.8 | 49,030 ratings
Price: 37.95
Last update: 12-03-2025
About this item
- Stay Charged: Battery Tender battery chargers and maintainers provide a full charge to your powersport vehicle’s 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
Product information
Features & Specs
| Output Voltage | 12 Volts |
|---|---|
| Input Voltage | 12 Volts |
| Current Rating | 750 Milliamps |
Measurements
| Item Dimensions D x W x H | 2.9"D x 2.15"W x 4.4"H |
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User guide
| Specification Met | CSA, ETL, FCC |
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Additional details
| Color | Black/Green |
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Warranty & Support
Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee:You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditionshere.
Product Warranty: For warranty information about this product, pleaseClick here[PDF ]
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Battery Tender Junior 12V, 750mA Charger and Maintainer: Automatic 12V Powersports for Motorcycle, ATVs, and More - Smarter Than a Trickle Charger - 021-0123
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Item details
| Brand | Battery Tender |
|---|---|
| Mfr Part Number | 021-0123-CA |
| Global Trade Identification Number | 00734357000078 |
| Manufacturer | Deltran |
| Customer Reviews | 4.84.8 out of 5 stars49,030 ratings 4.8 out of 5 stars |
| Best Sellers Rank |
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| ASIN | B000CITK8S |
| Item Type Name | BATTERY_CHARGER |
| Built-In Media | Battery Tender 021-0123 |
| Item Height | 9 inches |
| Unit Count | 1.00 Count |
| External Testing Certification | Não Aplicável |
| Warranty Description | Manufacturer Warranty |
Top reviews from the United States
- newtriguyThe best trickle charger for any money!Great item for motorcycles, ATVs, watercraft to keep them charged. I’ve used this brand for years and they always work great.
- JimReliable and Easy to Use – A Must-Have for Motorcycle Owners!I’ve been using the Battery Tender for my motorcycle, and it has been an absolute game changer. It’s super easy to hook up, and the compact design doesn’t take up any space in the garage. What I really like is that it automatically keeps the battery charged without overcharging it. Just plug it in, and it does all the work for you.
My bike starts right up every time, even after sitting for weeks, thanks to this maintainer. The indicator lights make it simple to know when the battery is charging or fully maintained, which gives me peace of mind.
If you ride seasonally or don’t get out on the road every day, this is the best investment you can make for your motorcycle. The Battery Tender saves time, money, and the headache of dealing with a dead battery. Highly recommend it to every rider! - Everyday shopperGreat chargerI couldn’t be more thrilled with this charger. It’s an absolute lifesaver for anyone who owns motorcycles, ATVs, or other vehicles that require regular battery maintenance. Setting it up is a breeze, even if you’re not particularly tech-savvy. The design is compact and lightweight, making it easy to handle, store, or even take with you on the go. One feature I really appreciate is how it automatically switches to maintenance mode when the battery is fully charged. This gives me peace of mind, knowing my batteries are protected from overcharging, which can cause damage over time.
I’ve used it multiple times already, and every single time, it’s performed flawlessly. My motorcycle battery used to struggle during colder months, but with this charger, it stays in top-notch condition and starts up like a dream. I also love how dependable it is—no sudden glitches or errors to worry about. It truly does what it’s supposed to do, and it does it exceptionally well. Honestly, it’s worth every penny and has saved me a lot of headaches.
If you’re looking for a trustworthy, efficient, and easy-to-use charger, this is the one! It’s the kind of product that quickly becomes a must-have in your toolkit. I wouldn’t hesitate to recommend it to anyone in need of a reliable solution for battery care. - Rick ParkDoes what it is supposed to doI have used Battery Tender chargers for many years, mostly on motorcycle batteries, with good results: quick starts, longer battery life, less maintenance. I have two lawn tractors now (a Sears 48" conventional type mower, and a commercial grade Exmark Lazer ZTR) that live in the garage, and normally aren't run much for the three-ish months of late fall-winter in Texas. If you live in colder climates, this charger is even more critical.
Hooking it up is a breeze. If you can take a nut off a bolt, you know all you need to know to install the harness. Remove the positive (red) battery cable (this is a good time to clean up the cable end and battery terminal with a small wire brush). The Battery Tender cable has a loop type butt connector on it, so just slip the red harness cable end over the battery bolt, put the positive cable and nut back on and you're halfway home. Repeat on the negative (black) cable. That's it for the harness hookup. Simple, right? Tie wrap the harness in a convenient place where you can get to the connector end, as the harness stays with the battery full time. Kudos to the manufacturer for putting a cover on the connector end to keep it clean. The original Battery Tenders didn't have that!
The connector to the charger is a flat two-conductor end that can only be connected one way, so no screw ups there. Even if you manage to do it wrong (wiring the harness backwards on the battery, for instance), it won't hurt the charger, it just won't charge. Connect the harness and charger together, and plug the charger in. There is a light that reflects charging state, and also lets you know if the battery is too dead to charge this way or if the harness is wired wrong. Once it gets back to steady green, you are charged. Now it will turn on and off as needed to keep your battery at optimal levels until next use. This maintenance charge also limits buildup of sulfates in the battery, the main reason unused batteries short out.
Yes, it does cost about the price of a lawn tractor battery. In my experience, it doubles the life of the battery and lasts for years so it will pay for itself. But the real value is never coming out of the house ready to go and have a dead battery stop you in your tracks... waiting hours for the charger to get it back into shape, then seeing it not hold a charge because it is sulfated. I do not miss that frustration, and this is a pittance cost-wise to avoid it. A good product from a company that has been making them for long enough to know how. They also make bigger ones for larger batteries. I have owned both types, and they work similarly.
It isn't fancy, and won't wow your friends, but it does exactly what it's supposed to do. I like that in a product.