Deltran battery tender plus - car charger and maitainer review

Deltran Battery Tender Plus 1.25 Amp 12v (Volts) Car Battery Charger & Maintainer Review

We hope you love the products we recommend! Just so you know, As an Amazon Associate I earn from qualifying purchases in form of commission or other compensation from the links on this page, at no additional cost to you. Thank you if you use our links, we really appreciate it!

Deltran battery tender plus - car charger and maitainer reviewThe interesting functionalities of this deltran car battery charger/maintainer may not be obviouse at first until you use it. Before I get into the details of this charger, first let me talk about the need for a car battery charger in first place. Most of the car batteries do not require a recharge for about five years, but it is only possible if you maintain the car battery in a right way and if you are taking care of all its requirements.

If you wish your battery to last for several more years, you need to keep it in good condition and fully charged.Your solution to all these problems is the Battery Tender Plus 1.25 Amp 12Volts Car Battery Charger and Maintainer, a charger that is smart and is explicitly designed to charge your battery to full without causing any damage to it and providing proper storage voltage so that your battery remains correctly functioning for years to come.

Whether it’s your car, RV, motorcycle, jet ski, ATV, etc that you’ve kept idle for a period of time, you can keep the battery maintained and ready for your use the next time you need to start it. All you need do is simply plug the charger, connect the leads & the Deltran Battery Tender Plus will take care of your vehicle’s battery without you needing to constantly monitor it.

Features of Battery Tender Plus 12V 1.25 Amp Battery Charger

You might be wondering what this charger do that makes it unique from the other chargers in the market and why you should prefer to purchase it? The first thing that will convince you to buy this fantastic charger is its consistent presence at the top of the list of primarily sold battery chargers on and several other such websites. The main reason for its top rank is its efficient results and outstanding performances.

When we look at the features of Battery Tender Plus 021-0128, 1.25 Amp Battery Charger, we find that other than just charging the battery, this charger has so many different perks to offer that it is not readily deniable to buy.

Let us have a look at its salient features that is sure going to convince you to buy this fantastic charger today.

  • Fast charging

When we are in an emergency situation, all we desire for our drained out battery is to get charged quickly. The Battery Tender Plus 021-0128, 1.25 Amp Battery Charger can provide faster charging, even faster than the 3amp battery charger.

  • Automatic switching to floating voltage

Once you have placed the battery to charge, you need not worry about the over-charging. Another fantastic feature of this Battery Tender Plus 021-0128, 1.25 Amp Battery Charger is that it can switch to the float charging mode when the battery has fully charged. This is done by discharging the battery a little so that the charger can maintain a stable voltage in the battery.

  • Easy plug in and charge

The simplicity of use and the ease with which the battery gets charge is something that has made the Battery Tender Plus 021-0128, 1.25 Amp Battery Charger a popular choice among the chargers out there in the market.

All you have to do is to connect the terminals of the charger to the terminals of the battery and leave it at it. The charge would get complete within around 2-3 days, and the indicator light will show that the battery has fully charged. You can even leave the battery and charger in the car when it is charging.

  • Reverse polarity

To provide safety and security, not only to you but also to the battery, the Battery Tender Plus 021-0128, 1.25 Amp Battery Charger is provided with an opposite polarity so that the hazardous conditions could get generated easily. In this situation both the red and green lights continue to flash alternately, making the user acknowledge the problem and solve it before it’s too late.

  • Accessories included

The package of the Battery Tender Plus 021-0128, 1.25 Amp Battery Charger contains not only the charger but also the Battery Tender Ring Terminals and Alligator Clips so that you have all the stuff ready with you whenever and wherever you need it to charge the battery.

  • Indicator lights

The charger comes with two LED lights designed to it so that they could educate the user about the condition of the battery. The red light indicates that the charging is in the process while the green light is the indicator that the battery has fully charged and has entered the float mode.

  • No damage

The most undesirable characteristic of any battery charger could be the unstable voltage and current supply that could kill the life of the battery and could damage it a lot. Battery Tender Plus 021-0128, 1.25 Amp Battery Charger is impressive in this regard as well as it maintains the battery at a proper storage voltage so it would not get damaged by the trickle effects that the other chargers create.

  • Quick connect harness

Sometimes you may get in such conditions where it is not easy to reach the battery quickly, and the charger has to be placed in some supportive material to keep it safe. Just to save you from the worry of finding some suitable stuff at the time of need, the Battery Tender Plus 021-0128, 1.25 Amp Battery Charger comes with a quick connect harness so that you could quickly charge the battery in hard to reach areas as well.

  • Constantly upgrading

The Battery Tender Plus 021-0128, 1.25 Amp Battery Charger was created for the first time some twenty years back, and till today the classical chassis design has been carried out. The design remained the same, but the software and performance of the charger have continuously been updated to meet the market standards and the user requirements.

Where to Find Battery Tender Plus Manual

The battery tender plus user’s manual can be downloaded from several website best of all from the manufacturers online resources. Click here to see it.

Why I Prefer Deltran Battery Tender plus over The junior (Jr)

The main reason is that, the Tender plus is a plus and the tender jr was a junior :).

The Plus has higher output current 1.25A vs .75A for the Junior.

The Plus is recommended for Gel batteries, where the JR is not.

Tender plus is about 50 times more boosting compared to the junior one. So all you have to do is to connect the charger to the battery and get three times quicker results with high battery charge.

As the modern vehicles have a significant percentage of electronics, they need high voltage to operate them as well. Also these electronics run even when the engine of the car is turned off, so you need a super surge not only to start the vehicle but also to entertain these electronics.

Therefore the high voltage from Battery Tender Plus 021-0128, 1.25 Amp Battery Charger, fully charges the battery so that you can enjoy nonstop entertainment and comfort in your vehicle.


  • Faster charging compared to 3amp chargers
  • Automatic switching between the float and charge modes
  • Include spark-proof connections, short circuit protection, and Polarity protection to ensure safety of the users
  • 10-Year limited warranty against defects in materials or workmanship
  • Temperature-compensated for accurate charging in any conditions
  • Charges all lead-acid, flooded, or sealed maintenance-free battery including AGM and Gel Cell types


  • Lacks a proper display
  • The old chassis could be tricky to handle at times

 Click Here To See Best Price >>>


As you might have seen from the features and discussion of the charger, it is undoubtedly the best choice so far in the market. This decision does not base on my own opinion instead it depends on the fact that almost all the trading websites on the internet are the proof that the Deltran Battery Tender Plus 1.25 Amp 12Volts Battery Charger & Maintainer is the most popular purchase in the world of battery chargers and has maintained its top ranks for years.

It’s used by the military and even the Corvette Museum sells a version of it for Corvette owners.

So. if you do not have a battery charger yet, rush to the market or some buying and selling market to purchase the Battery Tender Plus 021-0128, 1.25 Amp Battery Charger. If you already have a charger at home, but it is giving you terrible time to charger the batteries at the time of need then again you need the Battery Tender Plus 021-0128, 1.25 Amp Battery Charger to facilitate you. Rest assured that this charger is not going to trouble years to come and the five years warranty is sufficient proof for it.


Car Diagnosing
Enable registration in settings - general