Brand Comparison

Battery Tender JR vs Battery Tender Plus

We have compared the Deltran battery tender JR vs the battery tender plus in our complete guide. See which model is best for testing your car battery.

When you need a battery maintainer, you will want to look at the Deltran brand, specifically the Battery Tender Jr. and Battery Tender Plus models.

Our in-depth Battery Tender Jr vs. Plus comparison will look at the specifications of both to help you decide which model is best for you.

Deltran is the company behind the Battery Tender lineup. This manufacturer has been in business since 1965 and is most known for these two competing models.

When looking at the battery tenders, you see that the lineup contains some unique features. It contains automatic charging, a battery status monitor, LED indicators, spark-free circuitry, full output power while at low AC line conditions, minimal battery current draw, and a lightweight, compact construction.

Very few brands can compete against Deltran. 

Battery Tender Jr Vs. Plus: Reviewed & Compared

Battery Tender Plus Vs. Battery Tender Junior

The biggest difference between the Battery Tender vs. Battery Tender Jr is the power output. The Battery Tender Jr is rated at 750mA with a recommended capacity of 30Ah. However, the Battery Tender Plus is rated at 1250mA with a recommended capacity of 40Ah.

Both the Deltran Battery Tender Jr and the Deltran Battery Tender Plus charge in the same manner. The company utilizes a 4-step charging program, which includes Initialization, Bulk Charge, and Float Mode.

With this system, you won’t have to worry about the battery overcharging. Instead, it operates with smart technology that only charges the battery when it is needed. When the battery is completely charged, these products immediately switch to a maintenance mode instead. That’s what makes both models perfect for battery storage.

Another difference between the Deltran Battery Tender Jr vs. Plus is the applications. With the Battery Tender Jr trickle charger, you can maintain your 6- or 12-volt batteries. There is a Battery Tender Jr 6 volt option or the higher powered Battery Tender Jr 12v 0.75 amp charger. That makes it the ideal option for cars, trucks, SUVs, vans, and most any vehicle.

If you choose the six-volt option, it's best for smaller models, such as your motorcycle, golf cart, ATV, jet skis, and lawnmowers. However, the Battery Tender Plus 021 0128 only works with 12-volt batteries, making it slightly less versatile. However, both will work on flooded or sealed maintenance-free batteries.

Both models come with a 12-foot cord, making it easier to charge your battery without getting too close to the equipment. You will spend more to get the Battery Tender Power Plus in your garage, mainly because of the additional power provided.

However, this model is also larger than the smaller version, which makes it slightly less portable. Whichever model you choose, you get a ten-year warranty, which is exceptional among battery charging technology.

Battery Tender Plus 12V Battery Charger and...
16,338 Reviews
Battery Tender Plus 12V Battery Charger and...
  • STAY CHARGED: Provides a full charge to your...
  • EXTEND BATTERY LIFE: Compatible with all 12V...
  • INCLUDES: 12V, 1.25 AMP battery charger,...
  • EASY TO USE: Low maintenance design is quick...
On Sale Today
Battery Tender Junior 12V Charger and...
40,392 Reviews
Battery Tender Junior 12V Charger and...
  • STAY CHARGED: Battery Tender battery chargers...
  • EXTEND BATTERY LIFE: Compatible with all 12V...
  • INCLUDES: 12V, 750mA battery charger and...
  • SIMPLE & SAFE: Low maintenance, easy-to-use,...
Product Specifications

Battery Tender Junior

Battery Tender Plus







Vehicle Service Type

Cars, trucks, SUVs, vans, motorcycles, lawnmowers, snowmobiles, ATVs

Cars, trucks, SUVs, vans, motorcycles

Battery Types Supported

flooded or sealed maintenance-free

flooded or sealed maintenance-free

Product Weight

1.8 lbs


Output Current



Recommend Capacity



Cord Length



Battery Tender 800 vs. Battery Tender Jr

You might also be interested in the Battery Tender 800 vs. Battery Tender Jr. Both of these are also models from Deltran, with very little differences between the two. The Battery Tender Jr vs. 800 both provide the same smart charging technology, so you can maintain your batteries without a lot of oversight. The 800 is also a portable option, as with the Battery Tender Jr.

With the Battery Tender 800, you will notice a slightly shorter power cord at six feet instead. This puts the equipment somewhat closer to the battery than you might want. However, this model still comes with the same ten-year warranty and features just as many favorable reviews.

You can use this 12V battery charger on most cars, trucks and SUVs, but it won’t work on 6V batteries, as the one Battery Tender Jr. will. However, most modern vehicles require a 12V battery charger.

On Sale Today
Battery Tender 800 is a SuperSmart Battery...
3,110 Reviews
Battery Tender 800 is a SuperSmart Battery...
  • All the charging characteristics of the...
  • The interior is completely encapsulated,...
  • This charger is no larger than a standard...
  • Includes alligator clips and ring terminals,...

Pros & Cons of Deltran Battery Tenders


  • Smart charging technology
  • Portable
  • 10-year warranty
  • Wide range of product options
  • Reputable brand


  • Trouble choosing an appropriate model
  • Not as robust as some other brands
  • Some models expensive

Comparing Deltran Battery Tenders With Similar Brands

Deltran Vs BatteryMINDer

BatteryMINDer 1500: 12 Volt-1.5 AMP Battery...
1,393 Reviews
BatteryMINDer 1500: 12 Volt-1.5 AMP Battery...
  • EXTENDED BATTERY LIFE - Automatic full time...

Looking at the Battery Tender Jr vs. Battery MINDer models, you see some stark differences. In general, the latter is more complicated but also more advanced. These chargers include high and low-temperature compensation, which offers more versatility. However, this brand costs more money, mainly because of the additional features.

What’s surprising is that the Battery MINDer tends to be more compact, making it easier to take on the go. With that said, if you don’t need something as robust, you could save a lot of money with the super smart Battery Tender Jr.

Deltran Vs NOCO Genius G750

NOCO GENIUS G750 6V/12V .75 Amp Battery...
2,835 Reviews
NOCO GENIUS G750 6V/12V .75 Amp Battery...
  • A 20 amp (10 amp per bank) on-board battery...
  • Completely recharge smaller capacity...
  • Works with all types of 6-volt and 12-volt...
  • Keep your battery fully charged without worry...

You can also examine the differences between the NOCO Genius G750 vs. Battery Tender Jr. Just like with the Deltran option, this smart charger will work on a variety of battery types, ensuring you are never left with a dead battery. However, the NOCO model does use more advanced technology, making it slightly more complicated.

This simple charger will work with either 6- or 12-volt batteries, making it more versatile. It’s also a highly rated option that is loved by customers. While the price is slightly higher, the company only provides a five-year warranty. While this is still plenty of protection, it’s half the time of the Battery Tender.

Deltran Vs Black+Decker BM3B

BLACK+DECKER BM3B Fully Automatic 6V/12V...
12,214 Reviews
BLACK+DECKER BM3B Fully Automatic 6V/12V...
  • Charges and maintains 12 volt and 6 volt AGM,...
  • Easy connection to vehicle battery using...
  • Stops charging automatically when battery is...
  • Built-in circuit protection guards against...

If you want a basic battery maintainer, you might prefer the Black+Decker option. It’s a barebones model that doesn’t offer any sophisticated technology. Surprisingly, it also comes with the ability to work on either 6- or 12-volt batteries. As a cheap battery maintainer, this model offers more than you would expect.

This model weighs just over a pound, making it easy to use anywhere. Plus, there are simple to read lights that tell you the charging status. We can honestly recommend either option if you want a versatile battery charger, but the Black+Decker model only comes with a one-year warranty.

Deltran Vs Schumacher SC1360

On Sale Today
Schumacher SC1360 Fully Automatic Battery...
10,379 Reviews
Schumacher SC1360 Fully Automatic Battery...
  • RELIABLE POWER: Delivers 15 Amp rapid charge,...
  • SMART CHARGING: Microprocessor-controlled...
  • FLOAT MODE: Float-mode monitoring...
  • VOLTAGE DETECTION: Automatically detects 6V...

You can also look at the Battery Tender Jr vs. high efficiency Schumacher models. This option is much more advanced and meant to provide as much power as possible. This battery charger offers 15 Amp, 8 Amp, and 3 Amp modes. It can also be used with six- or 12-volt batteries for complete versatility. This fully automatic smart battery charger can be used with RVs, trucks, SUVs, and cars.

This model does weigh more but is still only around three pounds, so it’s not extremely heavy. However, the company only provides a two-year warranty, which isn’t nearly as long as Deltran provides.

How to Safely Use Deltran Battery Tenders

If you read the Battery Tender Junior manual, you will learn how to use this machine. Here are a few tips about the Battery Tender Jr. and how to use it.

  1. 1
    Turn off the vehicle and connect the maintainer.
  2. 2
    Turn it on and watch the Battery Tender Jr. blinking red light.
  3. 3
    Wait until the Battery Tender Jr. high efficiency charger indicates that the battery is full.
  4. 4
    Disconnect the maintainer.

You can also learn more with this video:

People Also Ask (FAQs)

Is it okay to leave Battery Tender on all the time? Can they ruin your battery?

You won’t hurt your battery with the four-stage technology. This smart technology ensures that the battery gets precisely what it needs at the appropriate time.

What is the difference between a battery charger and a Battery Tender?

The typical battery charger doesn’t turn itself off but just keeps sending out power, even after the battery is full. However, a Battery Tender automatically turns to a maintenance mode, which protects the battery.

What drains a battery while it is off?

Numerous aspects can drain a car battery. You might have left the headlights on or have a parasitic draw. It could also be old, making it difficult to charge the battery.

How can I tell if Battery Tender is charging?

The Battery Tender Jr red light indicates the status. Read the manual for your Battery Tender Jr for how to use instructions. If you test your car battery and it's not charged, and it doesn't seem to charge with your Battery Tender, you might need a new battery. 

Is the Battery Tender® Plus battery charger more expensive than a trickle charger?

You might spend a little more to get the Battery Tender Plus than a trickle charger, but the versatility and smart charging technology make it worth the expense.

How is the Battery Tender Jr. battery charger different from a trickle charger?

The trickle charger can’t tell when the battery is fully charged, so it continues supplying voltage. You must watch these chargers to ensure no damage occurs.

Where can I buy Deltran battery tenders?

It’s always best to buy your Battery Tender Jr. on Amazon or on the brands website. On these sites, you get a broader selection at better prices than if you buy the Battery Tender Jr. on Walmart or grab a Battery Tender Jr. at Lowes. You can also find Battery Tender Jr accessories on Amazon for more versatility.


We have looked at the difference between the Battery Tender Plus and Jr. Both of these models have a lot to offer. To pick between the Battery Tender vs. Battery Tender Jr, you must determine your needs first.