Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger

(11 customer reviews)



  • Spark proof during lead connection, reverse polarity protected and includes a 12-foot output cord and 5-year warranty
  • Perfect for charging all 12-volt lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell)
  • Complete 4-step charging program (Initialization, Bulk Charge, Float Mode) allows for optimization of battery power, without overcharging
  • Automatic charge cycle functionality switches to float mode after fully charging the battery
  • Solid state two color LED indicates stage of charger. Not for sale in California and Oregon

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.

11 reviews for Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger

  1. houston 2342

    works better than the others and I tried most of them.

  2. jason Turner

    I guess it is ok.

  3. george fuse

    Really nice for batteries that only get used seasonally.

  4. mike leaf

    Very good product.Buy this if you need your battery charged up, or for storing it.

  5. pg norton

    I bought this because my friend recommended this product to me. Great advice!!! For the price , this is awesome for my bike & snow machines.

  6. grand foam

    Good product.

  7. steve j.

    Works great! Very easy to install and no risk of over-charging.

  8. brandon locke

    Thsi works.Simple and cheap way to charge my motorcycle in the off season

  9. ottis

    Good product and keeps your battery charged. Work well and is very, very dependable.

  10. craig

    No issues yet. I was hesitant to purchase it but it seems that i was wrong

  11. pg norton

    This keeps my batteries in good shape every winter. It’s not meant to be plugged in for very long periods as it does get a little hot. I plug in a motorcycle battery for 6 hours once a week during the off season.

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