Battery Tender® Junior 12V, 750mA Battery Charger

SKU: 021-0123


Boost your ride’s battery life with the Battery Tender® Junior automatic battery charger for motorcycles, dirt bikes, ATVs, UTVs, lawnmowers, and more! Unlike typical trickle chargers that can overcharge a battery and cause damage when connected for too long, our advanced charger and maintainer provides a full charge before switching to float mode to keep your battery at an optimal level.

The lightweight charger comes with a 12-foot output cord, fused alligator clips, and a fused ring terminal harness for hard-to-reach spaces. With the included Quick Disconnect Cables, you can connect and disconnect the charger in seconds.

The Battery Tender® Junior 12V, 750mA battery charger and maintainer is all you need to stay charged and extend your powersport vehicle's battery life. It's easy to use, safe and secure.

Additional Information


- 12V, 750mA battery charger and maintainer with LED status light to show battery status

- Alligator clip combo cable provides quick and easy clip connection to batteries or clips can be removed for ring terminal application

- 5-year warranty and lifetime customer support


- Output: 12V @ 750mA

- Compatibility: lead-acid, AGM, and gel batteries

- Dimensions: 3.3 x 1.3 x 2.4 inches, 1 lb (charger only)

- Reach: 12’ output cord and 18” alligator clip ring terminal combo cable


Smart charger technology assures the correct level of power is sent to the battery at all times.

1. Initialization determines if the battery is connected correctly and battery’s charge level, composition

2. Bulk Charge brings the charge up with full charge and constant current

3. Absorption Mode slows the charging down until the battery reaches full charge

4. Float/Maintenance Mode keeps the battery charged without overcharging or discharging


Battery Tender® battery chargers and maintainers are manufactured with built-in safety features like:

- Spark proof connections (alligator clip with ring terminal combo) will not spark when touched together, the charger will not produce output voltage until it senses at least 3 volts from the battery

- Reverse polarity protection ensures the charger will not charge unless the connections are attached correctly

- Safety timer to shut off the charger after 80 hours of continuous use

Meets agency approvals and safety standards from UL, CSA, BC, and FCC.

California Residents WARNING: Cancer and Reproductive Harm -

Note to purchasers of Battery Tender® Chargers Models 022-0192 (Junior Version 1), 021-0123 (Junior Version 2), and 022-0185G (Plus Version 2) between February 2013 and February 2017:

The product informational materials supplied with these models contain a misprint that incorrectly lists that the chargers can charge 200Ah batteries. The actual maximum and minimum battery sizes these products can charge and comply with energy efficiency requirements are as follows:

- Battery Tender® Junior Version 1 (PN 022-0192): 55Ah max battery size, 4Ah min battery size

- Battery Tender® Junior Version 2 (PN 021-0123): 55Ah max battery size, 4Ah min battery size

- Battery Tender® Plus Version 2 (PN 022-0185G): 79Ah max battery size, 6Ah min battery size