Industrial-Sized Deals Shop all Back to School Shop Women's Handbags Learn more nav_sap_plcc_6M_fly_beacon Deradoorian $5 Off Fire TV Stick Subscribe & Save Shop Popular Services pivdl pivdl pivdl  Amazon Echo Starting at $99 Kindle Voyage Nintendo Digital Games Big Savings in the Amazon Fall Sportsman Event Baby Sale
Qty:1
Battery Tender 021-0123 B... has been added to your Cart

Other Sellers on Amazon
Lowest price: Used - Very Good
$23.33
+ Free Shipping
Sold by: Best Service Stores
Seller Rating: (215751)
Add to Cart
Buy New
$18.97
+ $5.49 shipping
Buy New
$25.68
+ Free Shipping
Have one to sell? Sell on Amazon

Image Unavailable

Image not available for
Color:
  • Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      

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

4,715 customer reviews
| 265 answered questions

List Price: $39.95
Price: $24.48 & FREE Shipping on orders over $35. Details
You Save: $15.47 (39%)
In Stock.
Ships from and sold by Amazon.com.
Not California and Oregon Energy Compliant
  • 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
See more product details
176 new from $18.95 1 used from $23.57

Amazon Register Amazon Register

$24.48 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger + Battery Tender 081-0069-6 Ring Terminal Harness with Black Fused 2-Pin Quick Disconnect Plug + Battery Tender 081-0148-25 25' Quick Disconnect Extension Cable
Price for all three: $37.13

These items are shipped from and sold by different sellers.

Buy the selected items together


Product Information

Style Name: Not California and Oregon Energy Compliant
Technical Details
BrandBattery Tender
ModelBattery Tender Jr. Battery Charger
Item Weight1.8 pounds
Product Dimensions8 x 4 x 9 inches
Item model number021-0123
Exterior Smooth
Manufacturer Part Number210123
OEM Part Number 021-0123
ABPA Partslink Number 13
Amperage0.75 A
Voltage12 volts
  
Technical Specification
  • Product Warranty: For warranty information about this product, please Click here [PDF]
Additional Information
ASINB000CITK8S
Best Sellers Rank #33 in Automotive (See top 100)
Shipping Weight1.8 pounds (View shipping rates and policies)
Domestic Shipping This item is available for shipping in the U.S. except for California and to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableOctober 2, 2000
  
Warranty & Support
Warranty, Parts: Parts

Product Warranty: For warranty information about this product, please Click here [PDF]
Feedback
 Would you like to give feedback on images?
 

Product Description

Style:Not California and Oregon Energy Compliant

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

Battery Tender Junior

12V @ .750MA

The Battery Tender Junior battery charger is the small and simple solution to the challenge of keeping batteries optimally powered while not in use.

Ideal for Motorcycles, Lawn Mowers, Jetskis, ATVs, and Vintage Automobiles.

Smart Charging Made Easy!
Product Description

The Battery Tender Junior allows you to connect the charger to a battery (either in or out of the vehicle) and forget about it until you are ready to put the battery to work. Like all Battery Tender chargers, once the battery has reached a 100% charge the Junior automatically switches it's output voltage to a safe, storage/float level that eliminates the need to worry about the damaging effects of overcharging. If/when the battery voltage drops too far under load, output power will begin again bringing you battery back to a fully charged state.

Key Features:

  • 4-Step Charging Program (Initialization, Bulk Charge, Absorption Mode, Float Mode)
  • Spark Proof
  • Reverse Polarity Protected
  • Short Circuit Protected
  • Safety Timer: 72 Hours (Prevents damage to marginal batteries)
  • 12 Ft. Output Cable
Battery Tender Junior

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

Extend the life of your battery!

5 Year Limited Warranty

Ideal for Motorcycles, Scooters, and Vintage Automobiles. Although small in size the Battery Tender will fully charge and then maintain. There is a misconception that this charger is only for maintenance purposes.

  • Package Includes:
  • Fused Alligator Clips for an alternate connection
  • Fused Ring Terminal Harness for hard to reach spaces

12V @ 750mA Junior

Ideal For: Motorcycles, Scooters, and Vintage Automobiles.

12V @800mA Weatherproof Charger

Ideal for: Boats, Motorcycles, Personal Watercraft, Scooters, and Vintage Automobiles.

12V @1.25Amp Plus

Ideal for: ATVS, Boats, Automobiles (New and Vintage), Motorcycles, Scooters, UTVs.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

780 of 803 people found the following review helpful By Shawn Murphy on September 21, 2009
Style Name: Not California and Oregon Energy Compliant Verified Purchase
In the analysis of buying a Tender Jr. vs. a Tender Plus, the main issues are time to full charge, battery size, & parasitic draw. The Tender Plus (1.25) will get the job done twice as fast as the Tender Jr. (0.75). Both now are similar architecturally, save it be the charging power & lack of temperature compensation on the Jr. They both are 4 stage, both have the same sophisticated computer chip technology running the charging process, etc... I spoke to The Deltran(The Manufacturer) customer service department on 3 different occasions, making sure I had the facts right. The first 2 times I was misinformed about the temperature compensation issue. I am editing this review to be accurate as of today's date of 12/01/10. Because The Plus will bring a battery to full charge twice as quickly as The Jr. will, The Plus has a much better chance at overcoming a parasitic draw on your batteries power. Modern cars have sophisticated electronics that require constant power 24/7. Check all your battery connections & your alternator belt!!! If the connections are not clean & tight, clean it with original coca-cola and a rag / brush, make sure they fit snugly. If your alternator belt is too loose it will not charge your battery properly. If you only want to buy one Tender, don't cheap out, buy The Plus if you have the money to do so. If you want to buy 2 or 3 Tenders to make sure all your batteries are fully charged, the Jr. will probably do just fine. I personally alternate The Jr. between 3 different cars, if I had it to do over again, I would buy The Plus instead as I am not a patient person. Both models will turn off in 72 hours automatically if a full charge is not reached, & neither will start charging without at least 3 volts stored in the battery before initiating a charge.Read more ›
26 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
533 of 589 people found the following review helpful By Stuart S. on October 19, 2011
Style Name: Not California and Oregon Energy Compliant Verified Purchase
I bought my first Battery Tender Jr. about 20 years ago (for an antique car that I drove infrequently) and it worked fine for over 15 years. I included it with that antique car when I sold it, and as far as I know, it still works.

Based on my prior experience, on November 4, 2010, I bought another Battery Tender Jr. from Amazon for another infrequently driven car. It is now less than 1 year later, and that Battery Tender Jr. got so hot that the plastic case buckled and separated at the seam. So, planning to return it under warranty, I read their terms. Not only do I have to pay to ship that defective unit back to Deltran (which I expected), they also charge a fee for "Warranty Evaluation, Shipping & Handling"! That is OUTRAGEOUS! Since I have my receipt, my fee would be only $7.95 (if no receipt, fee is $11.95). It would cost me $18.90 ($7.95 plus $10.95 USPS Flat Rate medium box) to return it (or $22.90 if I didn't have a receipt - which is more than the $21.39 cost of a new one from Amazon delivered!) Why bother with a warranty claim? If that was Deltran's plan from the outset - to discourage warranty claims - their so-called "warranty" is a fraudulent misrepresentation.

No doubt that my first, 20-year old Battery Tender Jr. was made in the USA. Not so with the second one - the label says "Made in China". A piece of Junk!
79 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
56 of 61 people found the following review helpful By Michael on January 31, 2014
Style Name: Not California and Oregon Energy Compliant Verified Purchase
I purchased 4 of these as I have had battery tenders over the years and they worked flawlessly, not these new ones made in CHINA (JUNK!). I noticed that the red light was on all the time (charging) and it should only stay on for a short while than when battery is charged it goes to green. I checked the voltage output and found only putting out 9.01 vdc (should be over 12vdc), called customer service and they wanted to charge me a "warranty return fee" and possibly other chargers also on top of shipping charges to get the faulty product back to them.-these are less than 9 months old! The cost to have this item warrantied far exceeds what I paid for it. To bad, battery tender USED to be a great way to keep batteries at optimum condition, I had to go out and purchase battery minder units to use in stead. I AM REALLY DISAPPOINTED IN YOUR POOR QUALITY AND LACK OF WARRANTY TO STAND BEHIND YOUR PRODUCT BATTERY TENDER. I hope others may read this and not make the same mistake I made.BUYER BEWARE!
1 Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
55 of 60 people found the following review helpful By DBC on December 1, 2011
Style Name: Not California and Oregon Energy Compliant
I bought one of these and while it seemed to work fine for several months, it didn't last a year before it died. Not sure what happened but it wouldn't charge. I have had good luck with the Yuasa brand chargers and prefer them now exclusively.
3 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
23 of 23 people found the following review helpful By GoldwingDocs on December 7, 2014
Style Name: Not California and Oregon Energy Compliant Verified Purchase
This is the ubiquitous Battery Tender Jr., manufactured by Deltran. There are quite a few float charger type products out there that bill themselves as "battery tenders" but the actual product name of this is "Battery Tender Jr." - they have other Battery Tender products, including one with higher charging output, and one with more outputs for charging multiple batteries.

But let's first get back to basics: what is a float charger, and why is it needed?

Lead-acid batteries, of the type used in cars and motorcycles, lose a part of their charge over time just sitting when they aren't even connected to something. When left in a bike that has a clock or radio memory circuit in it that constantly draws power even when the bike is off, that loss of charge is even faster.

Lead-acid batteries "like" to remain at full charge at all times. A battery that is kept at full charge will have a much longer service life than a battery that is left sitting with less than a full charge.

I used to go through a lot of batteries - my motorcycle batteries would last between one and two years before they needed replacement. With multiple motorcycles (not to mention other battery powered things like a generator, snow blower, etc.) this gets expensive!

I figured I would put a trickle (float) charger on my main GL1100 battery to help keep it fully charged. I bought a cheap trickle charger from Harbor Freight, for under $10. I hooked it up to the battery and left it sitting overnight. The next day, to my utter surprise, the battery was dead! The cheap trickle charger, with no intelligence in it and no way of turning off when the battery was charged, overcharged the battery, destroying it!
Read more ›
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Set up an Amazon Giveaway

Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more
Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger
This item: Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger
Price: $24.48
Ships from and sold by Amazon.com