Battery Tender Jr. 12V, 750mA Battery Charger

$ 37.95 Each
  • Manufacturer Part #: 021-0123
Note:
  • Fully automatic battery charger
  • Automatically switches to float charge
  • Easy-to-use in small spaces
  • Spark proof
  • Lightweight and compact charger
Set of 1: $ 37.95
Save for Later

The Battery Tender® Junior is a lightweight, compact and fully automatic battery charger. This easy-to-use charger fits into small spaces and will fully charge a power sport or vintage vehicle. All Battery Tender battery chargers automatically switch from a full charge to a float charge.

Features & Benefits

  • Perfect for all lead-acid, flooded or sealed, maintenance-free batteries (AGM and gel cell)
  • Complete 4-step charging program (initialization, bulk charge, absorption mode, float mode)
  • Automatically switches to float/maintenance voltage after fully charging the battery
  • If battery voltage drops too far under load, full charger output power resumes
  • Solid-state, two color LED indicates stage of charger
  • Spark proof
  • Plugs directly in to the wall
  • Safety timer: 80 hrs.
  • Reverse polarity protected
  • 12' output cord
  • Agency approvals: UL / CSA / BC / FCC
  • 5-year warranty

*California Residents

WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov>

Note: TO PURCHASERS OF DBT BATTERY 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:

  • JUNIOR VERSION 1 (#022-0192): 55 Ah maximum battery size, 4 Ah minimum battery size
  • JUNIOR VERSION 2 (#021-0123): 55 Ah maximum battery size, 4 Ah minimum battery size
  • PLUS VERSION 2 (#022-0185G): 79 Ah maximum battery size, 6 Ah minimum battery size

Ratings Charts & Reviews Battery Tender Jr. 12V, 750mA Battery Charger

Consumer Surveys

Would Buy Again? 10.0 - Excellent
Quality 10.0 - Excellent
Product Design 10.0 - Excellent
Performance Benefits 10.0 - Excellent
Ease of Use 10.0 - Excellent

Note: Customer Survey Ratings are 0-10 with 10 being the highest.

  •   Excellent (8.6 - 10)
  •   Good (6.6 - 8.5)
  •   Fair (4.6 - 6.5)
  •   Poor (2.6 - 4.5)
  •   Unacceptable (0 - 2.5)

Consumer Reviews

  • December 21, 2025

    5.0 out of 5

    This unit was purchased for a vehicle that was rarely driven since we have another vehicle. For over 8 years we have been attaching our charger/maintenance while the vehicle is garaged and every time we went to use the vehicle it started up the first time. Loved it so much I sent one to our daughter out-of-state. Also, we love the detachable connector in case you forget to unplug the charger before driving away. This has rescued me many times. This charger is simple. Attach the cables. Plug it in. That's it.

    • Location: PORT SAINT LUCIE, FL

    Was this review helpful?

    Yes No

  • August 29, 2025

    (Verified Purchase)

    5.0 out of 5

    The Tender is simple to use, reasonable priced and dependable.

    • Location: NEBO, NC

    Was this review helpful?

    Yes No

SERVICE WITH A SMILE

Need help choosing the right products for your vehicle? Our US-based team of highly trained experts has the knowledge and passion to help. Just pick up the phone and give us a ring. Or let's chat via email. We love solving problems and lending a hand (or an ear).

Contact Us
Three smiling Tire Rack employees