Log In / Register
0 Checkout
Battery Tender Junior

Please select a to check availability, or to add this item to your Shopping Cart or Wish List.


Savings (20%):

Select qty:

Please select a to view availability.
Add to Wish List
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


Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


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 97 97
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
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
It Works I have a 2014 HD Breakout FXSB and after my bike had sat in the garage all winter I had a bike that would not start. I bought this and it hooked directly to this attachment under my seat which made it so I didn't need the two attachments that this tender comes with; after about 8 hours I was able to start my bike, very pleased. March 2, 2016
Takes care of all your battery storage needs. The Battery Tender simply takes care of all your battery storage needs. Clip on the gator clips, or permanently install for more regular use with included alternate post mounts, and plug it in. It is that simple. The light on the battery tender will start off red, then change to green when you battery is fully charged. After that, it will cycle on and off as necessary throughout the storage period (all winter for me). The Battery Tender has a multi-year warranty, unlike the knockoffs. That gives me confidence and security that this product will take care of my bike for many winters to come. Patrick March 1, 2016
Great value Must have for those who have a bike that might sit for a bit between uses, or when you've got a battery taxing v-twin. I never used a tender on my first bike which I would leave sitting and start a couple times through the winter, which can kill battery health/life. After a quick wiring of the harness I now know it'll be good to go next time I go to fire up the bike. February 7, 2016
2 3 4 5 ... 13 next>>
Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the Battery Tender Junior? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.