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Battery Tender Junior

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$39.95 - $43.15
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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Battery Tender Junior Charger 

The Battery Tender Junior is much more than a trickle charger. It has a brain. It's lightweight, compact, and fully automatic; very easy to use, especially in small spaces. It will keep your battery fully charged so that it is ready to go when you are!


  • Input: 120VAC / 60Hz 
  • Output: 12V / 750mA
  • 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 the battery voltage drops too far under load, full charger output power resumes
  • Solid state two color LED indicates stage of charger
  • Spark-proof
  • Reverse polarity protected
  • 12' output cord
  • 5 year warranty

Note: For California & Oregon customers please see Battery Tender Junior High Efficiency model.

Product Style RevZilla Item # Manufacturer Product # Availability
12 Volt 177707 021-0123/0210123 In Stock: Ships within 24 hours


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If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Write a Product Review for a chance to win our monthly $100 giveaways.
Battery Tender Junior 4.8 5 100 100
Exceeded all expectations! 100% recommend!! I think all the positive reviews and 100% recommended rating says all you need to know. This thing works great and it is very well made. Took me less than 15 minutes to install and the wires and cords appear to be high quality. I mounted the pigtail such that the connector is exposed behind the removable right panel of my Honda VTX motorcycle. Since I must remove my seat to access the battery (requires removal of 3 bolts - huge pain), having quick access to a charging port under the right panel is so convenient. The pigtail also has a rubber cap to prevent moisture and corrosion. Highly recommend. I think its the best one on the market! July 24, 2016
8th Purchase I have put these on all my bikes to run battery tender, USB port, cigarette lighter adapters, and now the lead battery gauge. These are great and will span front to back on just about any bike you have. Easy hook up on the terminals and has a weather cap if not used all the time. Must have for most! August 10, 2016
Battery Tender Junior I have a harley battery tender which is a heavier unit and makes this one seem cheaper, but this unit works works just as well and does a good job. May 10, 2016
Works perfect The only thing I wish was that the leads were a little longer. I actually ended up cutting and soldering more wire to both to get the fit and placement that I wanted. Still...works just like it should. Just waiting till winter to try out leaving it on a battery tender for some months in a cold garage. June 15, 2016
Cheap and easy to install Installs in just a couple of minutes. Ran the wire to back under the rear seat to connect the usb adapter, then ran a longer micro usb cord along the frame to the front of the bike so I can charge my smartphone while using it as a navi. Great addition. Only complaint is that the cord could be a little longer but hard to beat for the price. May 24, 2016
easy to use This battery tender is simple to use and reliable . Safe and electrical cords are very long to reach to wall outlets. Perfect for expensive battery tender good product. March 22, 2016
Great battery tender Overall great product. Keeps the battery up to spec over long winters. Plus the included pigtails allow for a one time connection to the battery so it is easy to plug in without taking half the bike apart. March 15, 2016
Excellent product. a bit short! 9.8/10 Cheap and affordable price. Well build and safe to use. Only shortage is that its short. I wanted it to reach the handlebar on my Vstom and it didnt. Just ordered a 3ft usb extension cable male to female to solve this problem. April 28, 2016
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