Group 26 and Group 26R Batteries- Dimensions and Features

Published on: May 15, 2022
Written by Liam Jaxon / Fact-checked by David Rowan

Guys who are wondering about group 26r batteries just because of selecting or using other applications. For those better look over this writing all the way till the end of enjoying necessary info about what they expect Group 26 And Group 26R Batteries dimensions and features. 

group 26 and group 26r batteries

By the way, Both are mid-range starting types of batteries. Ultimate use in cars, power generators, SUVs, smaller boats, or trucks.The two important things of nominal dimensions 20.8 CM X 17.3 CM X 19.7 CM and feature of average weight 12.7 to 13.6 kg makes the 26/26r batteries more acceptable than others. 

Learn further?

Aside from providing vital knowledge about this matter, our article will also give you plenty of information that you have to know more about 26r batteries. Some awesome brands are also included here to consider in choosing the perfect ones for your vehicles. 

BCI Group 26 & Group 26R Batteries Dimensions 

BCI Group 26 and Group 26R batteries are relatively similar when you compare their dimensions, terminal types, and features. The only basic difference between the two types of batteries is the terminal orientation. Just BCI Group 26 has a negative terminal to the right and positive to the left. Alternatively, BCI Group 26R has the negative terminal to the left and positive to the right in most cases. 

The nominal dimensions of the group 26 and group 26R batteries are 8 3/16″ X 6 13/16″ X 7 3/4″ or 20.8 CM X 17.3 CM X 19.7 CM.  The 6 13/16 inch (17.3 CM) length adds the flanges.  Again, a 7 ¾ inch (19.7 CM) height adds the Flat Classical top. The average weight of the most lead-acid batteries is 28 to 30 pounds or 12.7 to 13.6 kg. 

Here are the electrical and mechanical specifications of the group 26r batteries. 


Length8 3/16″ (20.8 CM)
Width6 13/16″ (17.3 CM)
Height7 3/4″ (19.7 CM
Average voltage12-volts 
Cold Cranking Amps (CCA)Around 235 to 540 
Reserve Capacity Minutes Average 60 to 80 minutes
Body StyleTraditional with Flat Classical top 
TerminalsRight Positive Top Post STD/SAE 
FlangesRaised Hold Down Ledge
PolarityRight Positive

The most common thing is the battery power depending on the nominal voltage and capacity. Fortunately, maximum group 26 and 26R batteries come with 12 volts that is strong & standard for vehicles. On the other hand, capacity measures the number of electrons provided by a battery. 

Remember, the capacity of a battery, however, varies on the brands and the manufacturers. Measuring the capacity number of watt-hours or amp-hours. And, it provides information about how much electrical power is supplied to start the engine. 

You can also measure the instant hours using amp-hours and Cold Cranking Amps. We already showed the group 26R batteries provide at least 235 CCA and a maximum amount of 540 CCA. 

Moreover, the deep cycle capacity is measured in Amp Hours or Reserve Capacity Minutes. These batteries provide from 60 to 80 reserved capacity minutes. Want to compare the several battery features, CCA, RC? A cross-reference chart can help you find an overall idea about group 24, 26, 26r, 48, or more. 

Few Awesome Brands of Group 26 and Group 26R Batteries  

To understand this matter with ease, we share a comparison table including some awesome brands of BCI Group 26 and Group 26R batteries together with their features and specifications. 

BrandsBattery TypeCell TypeCapacityCCAMCARCWeight lbsWeight Kg 
Centennial 26R-75StartingFlooded5006257528 lbs12.7 kg
AntiGravity AG-26-24-RS StartingLiFePO424 Ah1000 —-—-
DieHard 26R StartingFlooded575 7208128.41 lbs 12.9 kg
Duralast 26R-DLStartingFlooded5757159028.41 lbs12.9 kg
Duracell 26RStarting?54066580—-—-
EverStart VP-26RStartingFlooded54038 lbs17.2 kg
Exide E26R-EXStartingFlooded51 Ah5006008029.4 lbs13.3 kg
Exide S26R-EXStartingFlooded5506608529.4 lbs13.3 kg
Generac 5819StartingFlooded52530 lbs13.6 kg
Megavolt 26-60-500StartingFlooded50 Ah50062028 lbs12.7 kg
Megavolt 26R-60-500StartingFlooded50 Ah50062028 lbs12.7 kg
Interstate M-26 StartingFlooded50062585
Interstate MT-26StartingFlooded52565585

From the table, you see maximum Group 26 and Group 26R batteries stand lead-acid  flooded as well as starting type batteries. Here, the CCA rate is from 500 to 575 Amps, nominal capacity ~50Ah, MCA rate from 600 to 720 Amps, and RC value is starting from 75 minutes and maximum amount of 90 minutes. Keep in mind that modern lead-acid batteries are able to tolerate more discharge compared to older ones. 

1. Centennial 26R-75 Automotive Battery 

Our first selected product is the Centennial 26R-75 automotive batteries perfect for demanding along with high-performance applications. It is designed using top-quality materials.

These starting type batteries provide a 24-month warranty and a perfect weight for every high-performance. It also allows you to drive your mid-size across town and SUV across the roughest terrain. If you want to get great performance, you can select this brand without any confusion. 

2. AntiGravity AG-26-24-RS Battery 

Anyway, the AntiGravity AG-26-24-RS batteries are suitable for a wide range of high-power motorcycles, power sports vehicles, race cars, and others. Another feature is its nominal capacity of 24 Ah and Cold Cranking Amps is 1000 so that ensures safe starting to the several vehicles.

The most highlighted thing, AntiGravity offers different volts of batteries including 6-volt morace-oriented, and sometimes 16-volts models for race-oriented. Its exclusive re-start technology supports working smoothly. It is a lightweight and reliable battery. 

Frequently Asked Questions

1. How to Charge the 26/26R Batteries?

To charge the Group 26 or 26R batteries, you need to connect the battery to the vehicle’s electrical system. This electrical system charges the battery automatically.

It is a very simple process. But, when you charge the lead-acid group 26 or 26R batteries outside of the vehicle, you have to use the exact charger. You need to wait until it is fully charged. Keep in mind that the charging current can be up to 6 to 8 Amps. For the lithium batteries, the charging current rate is necessary from 10 to 20 Amps. 

2. What are the Dimensions of a Group 26R Battery?

Group 26R batteries feature dimensions of (L x W x H) 8.1875 x 6.8125 x 7.75 inches or 208 x 173 x 197 mm. 

3. What Does the ‘R’ Mean in Battery Size?

The word R means “reserve” or the terminals are reserved. For example, the 26R battery. Alternatively, reserve capacity presents the number of minutes a fully charged 12-volt battery at 80 degrees Fahrenheit.

4. What Car Does a 26R Battery Fit?

Group 26R Batteries are fitted for $49 at Walmart – BMW 2002 and other ’02 – BMW 2002.

The Bottom Line 

Ultimately, the physical dimensions and all features of the BCI Group 26 and Group 26R batteries are not the same. But, the average dimension is 8.1875 x 6.8125 x 7.75 inches. You have to check the labels and features before choosing anyone. The main difference between them is the position of the positive & negative terminal. Otherwise, they are perhaps similar to each other.

Already, you have observed ins and outs of the 26 or 26r batteries from this article. So, it is time to let you enjoy your excellent battery.

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About This Writer

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Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

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