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  • Deltran Battery Tender (021-0128) 1.25 Amp Battery Charger
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Deltran Battery Tender (021-0128) 1.25 Amp Battery Charger

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List Price: $73.95
Price: $44.99 & FREE Shipping. Details
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12V@1.25A
Battery Charger
  • Battery Tender Plus 12V - 1.25 Amp, Automatically switches from full charge to float charging mode
  • The Battery Tender Plus is a 1.25-amp battery charger designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers
  • Included is a quick connect harness for hard to reach areas
  • Temperature compensated to ensure optimum charge voltage according to ambient temperature
  • Battery Tender at 1.25-amp will charge as fast or faster than any 3-amp charger available, Reverse Polarity Protection to ensure user safety Red and Green Lights Alternately Flash in this condition
  • This item is not California or Oregon energy compliant.
  • To purchase charger if you live in California or Oregon please see attery Tender 022-0185G Charger/Maintainer
See more product details
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Frequently Bought Together

Deltran Battery Tender (021-0128) 1.25 Amp 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: $64.58

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Product Information

Style Name: 12V@1.25A | Configuration: Battery Charger
Technical Details
BrandBattery Tender
Model021-0128
Item Weight2.3 pounds
Product Dimensions11 x 4 x 11 inches
Item model number021-0128
Exterior Smooth
Manufacturer Part Number021-0128
OEM Part Number 021-0128
ABPA Partslink Number 13
Amperage1.25 A
Voltage12 volts
  
Additional Information
ASINB00068XCQU
Best Sellers Rank #363 in Automotive (See top 100)
Shipping Weight2.8 pounds (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableOctober 2, 2003
  
Warranty & Support
Warranty, Parts: Parts

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
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Product Description

Style: 12V@1.25A | Configuration: Battery Charger

Battery Tender Plus 12V - 1.25A. The Battery Tender Plus is a 1.25-amp battery charger designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. Included is a quick connect harness for hard to reach areas. Temperature compensated to ensure optimum charge voltage according to ambient temperature. Automatically switches from full charge to float charging mode. Battery Tender at 1.25-amp will charge as fast or faster than any 3-amp charger available. Reverse Polarity Protection to ensure user safety. Red & Green Lights Alternately Flash in this condition. Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode). 10 year warranty.

From the Manufacturer

Battery Tender Plus. Proven Design. Proven Reliability.

The First of its Kind! Fully Automatic 'Smart' Battery Charger. Maintenance Free Battery Charging.

Extend the Life of your Battery

The World's Most Technologically Advanced Battery Charger

With the same rugged chassis design as the original Battery Tender unit we built more than 20 years ago, The Battery Tender Plus has gone through several upgrades in software and design, constantly adapting and adjusting to the battery market.

Plug In and Charge

The original Battery Tender was the first of it's kind, automatically switching to a float/maintenance mode when the charge is complete, and paving the way for maintenance-free battery charging as we know it today.

10 Year Warranty

The Go To Battery Charger:

  • Perfect for ATVS, Cars, Lawn Mowers, Motorcycles, and Scooters.
  • Charges at 1.25Amps
  • Temperature Compensated
  • Spark Proof, Reverse Polarity Protected

Smart Charging Made Easy

Automatically switches from full charge to float charging mode. Battery Tender at 1.25 amps will charge as fast or faster than any 3 amp charger available.

Accessories Included

Battery Tender Ring Terminals

Battery Tender Alligator Clips

Battery Tender Junior Battery Tender Junior High Efficiency Battery Tender Junior Lithium Battery Tender 800 Battery Tender Plus Battery Tender plus High Efficiency
Part Number 021-0123 022-0192 022-0198Li 022-0150-DL-WH 021-0128 022-0185G
Warranty 5 Years 5 Years 5 Years 3 Years 10 Years 5 Years
Input/Output 12V @ 750mA 12V@750mA 12V@750mA 12V@800mA 12V@1.25A 12V@1.25A
4-Step Charging
Spark Proof/ Short Circuit Protected
Safety Timer 80 Hours 80 Hours 80 Hours 72 Hours 72 Hours
Water Resistant
For Sale in CA or OR
Reverse Polarity Protected

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

506 of 513 people found the following review helpful By F. Dumanoir on June 22, 2007
Style Name: 12V@1.25AConfiguration: Battery Charger Verified Purchase
Every time I want to fire up my old 71 Datsun (that's Nissan for those of you younger than 30) 240 Z there's a good chance that the battery has drained down and that I can't start it! Looking around at car forums I read about this nifty little gadget....It's like a battery trickle charger....sort of. Whereas it's not recommended to keep a trickle charger hooked up all the time, this one has circuitry to limit the current and sense when the battery needs charging. It only charges at 1.25 amps which is easier on the battery.

I've had it on for a month now and it's great. The first couple of days, the red light was on indicating charging. Since then it's been on green and the car starts right up. I live in Houston where the heat and humidity can be just as brutal on batteries as the cold.

I highly recommend this "tender" for those that have cars that stay unused for long periods.

As other reviews have mentioned it comes with a set of adapters that allow you to permanently attach pigtails to the battery posts and then you can quickly connect the tender without having to use the alligator clips (also included).

For the price and free shipping you can't go wrong!

UPDATE after two years of use.
I can now reconfirm that these battery tenders work great - I've had them hooked up continuously on two cars that stay in the garage a lot and I've NEVER had them not start right up. A quick glance at the LED display lets me know that the batteries are either charging or fully charged. It's a real pleasure to be able to go right up and enjoy your wheels without having to worry about whether the battery is dead. I can't say for sure, but I suspect that it lengthens the life of the battery as well.
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754 of 776 people found the following review helpful By Shawn Murphy on September 21, 2009
Style Name: 12V@750mAConfiguration: Battery Charger 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 ›
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183 of 188 people found the following review helpful By Hal on March 6, 2008
Style Name: 12V@1.25AConfiguration: Battery Charger Verified Purchase
This little gizmo is dynamite.

I have a 4 year old Accord that, due to circumstance, only has about 4400 miles. Rarely driven...and what driving is done is mostly at night.

Sat for a week once in very cold weather...dead battery.

Ordered this. Hooked it up. 100% charge and the battery is very powerful once again.( had thought I would probably need a new one).

It's very small size makes it extremely easy to use and store. And it will not overcharge, so you do not have to babysit the process.

It's LEDs glow red when charging. Green and red blink once 80% has been achieved. Solid green at 100%.

It did, in very cold weather, take a long time to establish a full charge on my almost completely discharged battery. The battery would have been usable in a few hours, but 100% took close to 18.

Highly recommended.
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496 of 551 people found the following review helpful By Stuart S. on October 19, 2011
Style Name: 12V@750mAConfiguration: Battery Charger 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!
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Deltran Battery Tender (021-0128) 1.25 Amp Battery Charger
This item: Deltran Battery Tender (021-0128) 1.25 Amp Battery Charger
Price: $44.99
Ships from and sold by Amazon.com