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Battery Tender 021-0123 Battery Tender Junior 12V, 0.75A Battery Charger will charge and maintain your battery so that it is ready to go when you are! It's lightweight, fully automatic and easy to use

4.7 out of 5 stars 6,976 customer reviews
| 525 answered questions

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  • Spark proof during lead connection, reverse polarity protected and includes a 12-foot output cord and 5-year warranty
  • 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
  • Solid state two color LED indicates stage of charger.
  • If the battery voltage drops too far under load, full charger output power resumes
  • Spark proof, Reverse polarity protected, 12' output cord
169 new from $22.37

Frequently bought together

  • Battery Tender 021-0123 Battery Tender Junior 12V, 0.75A Battery Charger will charge and maintain your battery so that it is ready to go when you are! It's lightweight, fully automatic and easy to use
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Total price: $42.69
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This item Battery Tender 021-0123 Battery Tender Junior 12V, 0.75A Battery Charger will charge and maintain your battery so that it is ready to go when you are! It's lightweight, fully automatic and easy to use
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Customer Rating 4 out of 5 stars (6976) 4 out of 5 stars (3769) 4 out of 5 stars (2524) 4 out of 5 stars (2283) 4 out of 5 stars (1419) 4 out of 5 stars (384)
Price $25.93 $45.03 $15.96 $42.49 $24.85 $22.69
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Item Dimensions 4 x 8 x 9 in 4 x 11 x 11 in 3 x 5 x 9.75 in 4.75 x 9 x 11 in 7.5 x 7 x 11 in 5.3 x 9.1 x 3.5 in

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Product description

Battery Tender Junior 12V Battery Charger is much more than a trickle charger. It has a brain, is lightweight, compact, fully automatic and very easy to use especially in small spaces. This battery charger will keep the battery fully charged so that it is ready to go always. It has a microprocessor controlled fully automatic charger and maintainer and is designed to extend the life of any lead acid battery commonly used in automobiles, motorcycles, ATVs, personal watercraft, RVs, boats, airplanes, golf carts, back-up generator systems, etc. Any vehicle or battery-operated piece of equipment not used on a daily or regular basis is a candidate for a Battery Tender charger. The advanced technology will bring the battery back to a full charge without overcharging and then float or maintain the battery for an indefinite period of time. The Battery Tender Junior comes equipped with alligator clips and ring terminals for easy hook up. An optional 25 feet extension cord (part number 081-0148-25) is sold separately.


From the manufacturer

Ideal for Motorcycles, ATVs, Scooters, and Automobiles.

Technical Details:

- Input Voltage: 120VAC / 60Hz.

- Output Voltage: 12 Volts DC @ .750 MA.

- Shipping Weight: 2 Lbs.

- Agency Approvals: UL/CSA.

- P/N# 021-0123.


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This item: Battery Tender 021-0123 Battery Tender Junior 12V, 0.75A Battery Charger will charge and maintain your battery so that it is ready to go when you are! It's lightweight, fully automatic and easy to use