Brand Comparison

Battery Tender Plus Reviewed

The Battery Tender Plus is one of the best battery maintainer models. Use this review to see if the Deltran Plus model is ideal for your needs.

Battery tenders are a great tool for keeping your automotive battery charged. One of the top brands is Deltran, but how do you know which model to choose? We did a complete Battery Tender Plus review to show you why this model is a top choice.

Deltran is the manufacturer making the Battery Tender Plus, among other top choices. The company has been around since 1965. With all its years of experience, the company has become a trusted option for high-performing products that maintain your vehicle. This company ensures exceptional performance, allowing your battery to remain charged at all times.

Key Features of Battery Tender Plus Battery Chargers

Smart Charger Technology

4-step charging includes several stages, depending on the battery level. Some stages provide more power than others, but everything is adjusted automatically based on what's needed.

Fully Automatic Charging

Without any input from you, the Deltran Battery Tender Plus puts itself into the Maintain Mode once the battery receives a full charge. This system ensures that the battery doesn’t get overcharged and damaged.

Battery Status Monitoring

The Battery Tender Plus lights show you the state of the battery. You can easily see if the Battery Tender Plus red light is flashing by looking at the handy LED indicators.

Spark Free Circuitry

The Battery Tender Power Plus3 includes ring terminals and alligator clips that don’t spark when they touch. The model won’t send out voltage until it first recognizes three volts of power coming from the battery.

Quick Disconnect Harness

The Battery Tender Plus 021 0128 offers a quick disconnect feature that cuts down the connection and disconnection time when using your battery charger. Spend less time getting set up with this feature.

Good for Long Term Storage

You can use the Battery Tender Power Plus for batteries that you put in storage. If you want to maintain a charge, simply connect the maintainer to your battery, and don't worry about it. 

Low Maintenance Design

There’s very little you have to do with this Deltran battery maintainer. It is meant to work for many years, without any help from you. There’s even a five-year warranty for more protection.

Reversed Hook Up Protection

With this protection running through the internal circuit, you know that the device won’t get damaged if the power supply polarity becomes reversed. Instead, the circuit cuts power.

Battery Tender Plus Applications & Vehicles Supported

Sizes Available

This Deltran Battery Tender Plus high efficiency model is a 12V, 1.25 Amp machine. However, the company does make other chargers that work with the 6V battery instead. Some battery maintainers work on both voltages. 

Battery Types

You need a Battery Tender Plus that matches your battery type. You can have a lead-acid, flooded, sealed, AGM, gel cell, or marine battery and use a maintainer to keep it running at full power.  

Battery Tender Plus Reviewed

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...

The 1.25-amp Battery Tender Plus gives all of your automotive batteries a full charge. When the battery is full, it automatically switches to the float mode, ensuring proper voltage levels without ever overcharging your battery. You can use this handy charger in compact spaces for fast charging capability.

It’s also ideal for all battery types. Even if you want to put your batteries in long term storage, you will find this is the best option. The solid state color LED light tells you the charging state. If the voltage drops too low, the charging will resume at full power. The Battery Tender Plus instructions are simple to read, making it a simple machine to use, even if you have no experience.

This battery charger is spark-proof. With this technology, you won’t need to worry about connecting anything the wrong way. This machine will not send out voltage until it detects the proper setup. If you read the Battery Tender 3 amp Power Plus review comments from users, you see how much everyone loves this model. You will also notice some other models listed with this Battery Tender Power Plus 3 amp charger reviews.

For example, we have looked at the differences between the Battery Tender Jr. vs Plus. Looking at the Battery Tender vs Battery Tender Jr, you see that the latter model is smaller and more compact. However, the most significant difference between the Battery Tender Plus and Jr. is the power level. You can read our full review to see what makes each model unique.

Positives & Negatives of the Battery Tender Plus


  • Long output cord
  • 5-year warranty
  • 4-stage charging technology
  • Spark-free protection
  • Works with many applications


  • More expensive than Jr.
  • Some dead on arrival
  • Difficult to understand without previous knowledge

Comparing Battery Tender Plus to Similar Brands

Battery Tender Plus vs. Battery Minder

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...

The Battery MINDer chargers are advanced, as with our reviewed model, but they can also become more complicated to use. However, these models are similar in price and get just as many positive customer reviews. Use either option on a variety of vehicles.

Battery Tender Plus vs. NOCO Genius

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 do want to understand the differences between NOCO G3500 vs. Battery Tender Plus. Both models are advanced and provide the power you need. The NOCO model only comes with a three-year warranty but does offer the versatility of working with either 6- or 12-volt batteries without changing equipment.

Battery Tender Plus vs. Black+Decker BM3B

BLACK+DECKER BM3B Fully Automatic 6V/12V...
12,271 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...

The Black+Decker model is another charger that allows charging with both 6- and 12-volt batteries, but it’s considered a cheaper model. While that helps your savings, it doesn’t provide the durability and reliability you are looking for. It also might not be the best choice if you want to charge batteries in storage.

Battery Tender Plus 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...

If you want the most sophisticated charger of all these models, go with the Schumacher SC1360 instead. This advanced charger is a high efficiency option with the capability to charge either 6-or 12-volt batteries. It also has some fast charging capability if you find yourself with a dead battery, but will cost more.

Product Specifications


Battery Tender Plus


NOCOGenius G750


Schumacher SC1360


1.25 Amps

1.5 Amps

0.75 Amps

1.2 Amps

15 Amps


12 Volts

12 Volts

6/12 Volts

6/12 Volts

6/12 Volts

Vehicle Service Type

ATVs, SUVs, trucks, cars, motorcycles, etc.

ATVs, SUVs, trucks, cars, motorcycles, etc.

ATVs, SUVs, trucks, cars, motorcycles, etc.

ATVs, SUVs, trucks, cars, motorcycles, etc.

RVs, ATVs, SUVs, trucks, cars, motorcycles, etc.

Battery types Supported

lead acid, AGM, and gel batteries

lead acid, AGM, and gel batteries

lead acid, AGM, and gel batteries

lead acid, AGM, and gel batteries

lead acid, AGM, and gel batteries

Product Weight

2.29 lbs.

15.2 ounces

1.08 lbs.

1.25 lbs.

3.06 lbs.

How to Safely Use the Battery Tender Plus

It’s always best to read the Battery Tender Plus user manual before you start. However, we do have a few tips to help you use your battery maintainer.

  • Always use chargers with your vehicle turned off.
  • Connect your maintainer and turn it on.
  • Watch the Battery Tender Plus lights meaning to determine the status.
  • When the battery is charged, you can remove the Battery Tender.

Learn more about using the Battery Tender with this video.

People Also Ask (FAQs)

Do battery tenders ruin batteries?

Our Battery Tender Power Plus 75a reviews show that the model will automatically turn to maintenance mode when the battery is charged to ensure it extends the life.

How can I keep battery tenders in good working condition?

Don’t use your Battery Tender Power Plus 3 amp charger in bad weather. When you are finished using it, clean it off with a rag. Plus, it would help if you inspected the charger before any use for damage. 

How long can I leave the Battery Tender® Plus battery charger connected to a battery?

The Battery Tender Power Plus3 amp has 4-stage technology, allowing you to use it for longer periods without worrying about overcharging.

Can the Battery Tender charger be used to charge more than 1 battery simultaneously if the batteries are connected in series?

You can use a Battery Tender charger when the batteries are connected in series. You charge the entire series at once.

What about if they’re connected in parallel?

Charging batteries in parallel can also be done with the Battery Tender lineup, as per the manufacturer.

Is there any danger that these battery chargers can cause damage to other automotive electronic systems?

Modern battery chargers don’t damage the electronics. However, older car chargers can create voltage spikes that cause electronic damage.

Where can I find the manual for these devices?

Look for the Battery Tender Plus manual from the company’s website or look for it in your product packaging. It explains everything you want to know about the Battery Tender Power Tender Plus high efficiency model.


Our Deltran Battery Tender Plus review shows you what makes this a top choice. However, we’ve also discussed the Deltran Battery Tender Jr. vs. Plus model in case you need something different.