$39.99
Keep your battery alive year-round with the Battery Tender Junior 750mA 12V Charger – the #1 best-selling battery maintainer for motorcycles, ATVs, UTVs, dirt bikes, classic cars, boats, jet skis, lawn mowers, and powersports toys. This fully automatic smart charger switches to float mode when full, preventing overcharging while keeping your battery at optimal voltage indefinitely. Perfect for seasonal storage or daily riders – trusted by millions for over 50 years. Top choice for customers searching Battery Tender Junior, 12V 750mA battery charger maintainer, motorcycle battery tender, smart trickle charger for car ATV boat, or automatic battery maintainer 0.75 amp. Shop now at Battery Joe – your go-to source for **genuine Battery Tender chargers and premium battery accessories.
Battery Tender by Deltran is the original and most trusted name in battery maintenance – this Junior model (021-0123) is the perfect compact charger for smaller batteries and tight spaces. Unlike cheap trickle chargers that can cook your battery, the Junior uses advanced 4-step charging technology with microprocessor control to deliver exactly what your battery needs. Spark-proof, reverse polarity protected, and temperature compensated – hook it up and forget it. Riders and owners love it for extending battery life up to 4x, preventing sulfation, and always-ready starts after winter or long storage.
The Battery Tender Junior is the go-to maintainer for:
Hook it up once and your battery stays 100% charged forever – no more dead batteries on the first ride of spring.
Backed by Deltran’s industry-leading 10-year warranty – the longest available. OEM choice for Harley-Davidson, Honda, Polaris, and more. Over 50 million units sold worldwide.
Stop throwing away batteries – start maintaining them.
Add the Battery Tender Junior 12V 750mA Smart Charger & Maintainer to your cart today at Battery Joe Ecommerce Online Shop – your trusted destination for Battery Tender chargers, motorcycle battery maintainers, and smart battery accessories. Easy returns. Keep your ride ready – order now!
71 in stock
Local Pickup & Delivery Orders are only available within a 25-mile radius of your local Battery Joe location.
Ship-to-Home:
Please note that ship-to-home options are unavailable for automotive, commercial, golf cart, industrial, and marine/RV batteries to ensure safe and compliant handling. However, you can still enjoy convenient local delivery or in-store pickup for online orders in these essential battery categories. In addition, we do not ship to Alaska or Hawaii at this time.
Battery Joe’s ship-to-home policy provides convenient delivery options to customers throughout all 48 contiguous states in the Continental United States.
Local Pickup:
Orders placed during business hours are typically ready within one hour and available for pickup up to 30-minutes before closing.
If your order is placed within the last hour of business, please call the store after placing your order to confirm it can be prepared in time.
Orders placed after hours will be ready for pickup the next business day.
Local Delivery:
Delivery times may vary based on order volume and location.
Orders placed within one hour of closing will be delivered the next business day.
| Attribute | Specification |
|---|---|
| Brand | Battery Tender (Deltran) |
| Model / Part Number | 021-0123 |
| Type | Single-Bank Smart Battery Charger & Maintainer |
| Input Voltage | 120 VAC @ 60 Hz |
| Output Voltage | 12V DC |
| Output Amperage | 0.75 Amps (750mA) |
| Compatible Battery Types | Lead-Acid (Flooded, Maintenance-Free AGM, Gel) – NOT compatible with Lithium/LiFePO4 |
| Charging Program | 4-Step Fully Automatic SuperSmart™ (Initialization, Bulk Charge, Absorption Mode, Float/Maintenance) |
| Dimensions (L × W × H) | 4.4 × 2.15 × 2.9 inches (112 × 55 × 74 mm) |
| Weight | 1 lb (0.45 kg) charger only |
| Output Cord Length | 12 ft total reach (6 ft cord + 6 ft quick-disconnect harness) |
| Input Cord Length | 6 ft |
| Safety Features | Spark-proof, reverse polarity protection, short circuit protection, state-of-charge circuitry |
| LED Indicators | Solid Red = Charging · Flashing Green = 80%+ Charged · Solid Green = Float/Maintenance Mode |
| Additional Features | Microprocessor controlled · Automatic float mode · Extremely compact & lightweight · Safe for indefinite connection |
| Included Accessories | Quick-connect alligator clips harness (fused), Quick-connect ring terminal harness (fused) |
| Warranty | 10 Year Limited Warranty |
| Key Benefits | • #1 selling powersports charger worldwide • Fully automatic – connect it and forget it • Never overcharges – switches to float automatically • Perfect for small batteries & long-term storage • Extends battery life vs. trickle chargers • Trusted for over 50 years |
The Battery Tender® Junior (021-0123) is the world’s best-selling compact 12V smart charger and maintainer – perfect for motorcycles, ATVs, ATVs, UTVs, personal watercraft, lawn mowers, riding mowers, classic cars, and any vehicle in seasonal storage. This fully automatic 750mA microprocessor-controlled charger uses a 4-step charging program (initialization, bulk, absorption, float) to safely bring batteries to full charge and then maintain them indefinitely without overcharging or damage. Compatible with all lead-acid battery types including flooded, AGM, and gel cell.
| Weight | 2 lbs |
|---|---|
| Dimensions | 7 × 6.5 × 3.4 in |
| Category Code | AUTOMOTIVE |
| Sub Category Code | BATT-TEND |
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