Different cars use different types of batteries, grouped based on their physical dimensions, type of battery, and terminal positions. Group H6 and H7 batteries are widely used in a variety of car models. They have some similarities as well as differences between them. Here is a detailed comparison between H6 vs H7 batteries. Knowing what the key differences are between them can help you decide which one is best for your vehicle.
Table of Contents
- 1 Group H6 Quick Overview
- 2 Group H7 Quick Overview
- 3 Group H6 vs Group H7 Battery
- 4 Group H6 vs Group H7: Which Group Size Is Better?
- 5 What Battery Is Equivalent To H6?
- 6 What Battery Is Equivalent To H7?
- 7 Best Group H6/48 Battery Models
- 8 Best Group H7/94R Battery Models
- 9 FAQs - H6 vs H7 Battery
- 10 Wrap Up: H6 vs H7 Battery
Group H6 Quick Overview
Group H6, also known as Group 48, is one of the most commonly used group sizes in automotive, marine, and light industrial applications. The H6 batteries are rectangular with recessed top post terminals, making them 10.94 inches long (278 mm), 7.48 inches tall (190 mm), and 6.89 inches wide (175 mm). They usually weigh between 45 and 54 pounds, depending on their make and brand.
Group H7 Quick Overview
Group H7, or Group 94R, as it is also known, is a type of automotive battery used in many applications. The H7 batteries are usually 12.38 inches long (315 mm), 6.89 inches wide (175 mm), and 7.48 inches tall (190 mm). They usually weigh between 51 and 57 pounds.
Group H7 batteries are advanced generation batteries that can tolerate relatively deep discharges. They also boast a significantly higher cranking amp rating than most standard automotive batteries.
Group H6 vs Group H7 Battery
When comparing these two battery groups, it is evident that there are some similarities and differences between them. The table below will give a more detailed overview of the H6 vs. H7 battery comparison.
Dimensions
Group H6 batteries are 10.94 inches long, 7.48 inches tall, and 6.89 inches wide, whereas Group H7 batteries are 12.38 inches long, 6.89 inches wide, and 7.48 inches tall. As you can see, the H7 battery is slightly larger than the H6 battery.
Weight
Group H6 batteries usually weigh between 45 and 54 pounds. The weight of the Group H7 batteries, on the other hand, ranges between 51 and 57 pounds. They are both heavy batteries, but H7 is heavier considering it is also slightly bigger.
Terminal positions
Group h6 and H7 use an SAE top post terminal with the same polarity and size. The only difference is the distance between the terminals, with the H7 slightly wider.
RC Rating
The reserve capacity rating for BCI Group H6 batteries ranges between 120 and 140 minutes, whereas the RC rating for Group H7 batteries is between 140 and 160 minutes. This means that H7 batteries can deliver a sustained amount of power for a longer period of time than H6 batteries.
CCA Rating
Comparison Chart
| H6 | H7 | |
|---|---|---|
| Dimensions | 10.94 x 6.89 x 7.48 inches (278 x 175 x 190 mm) | 12.38 x 6.89 x 7.48 inches (315 x 175 x 190 mm) |
| Weight | 45-54 pounds (20-24 kg) | 51-57 pounds (23-26 kg) |
| Reserve capacity (RC) | 120-140 minutes | 140-160 minutes |
| CCA | 720-800 Amps | 800-850 Amps |
| Nominal capacity | 60-72 Ah | 76-80 Ah |
Group H6 vs Group H7: Which Group Size Is Better?
The truth is, there is no simple answer to this question. The best battery group size for you will depend on several factors, including your vehicle type, the climate you live in, and your driving habits. If you live in an area with extreme temperatures or do a lot of stop-and-go driving, then a Group H7 battery may be the better choice for you.
What Battery Is Equivalent To H6?
Apart from Group H7, the H6 battery is the equivalent of the Group 46 battery and the group 24F battery. They are mid-sized batteries, usually used as starting batteries. They will fit into the same space as an H6 battery.
What Battery Is Equivalent To H7?
The H7 battery is the equivalent of the Group 48 battery and also of the Group H6. The sizes aren’t precisely the same, but they’re very close. The H7 is a deep cycle battery that can tolerate relatively deep discharges.
Best Group H6/48 Battery Models
ACDelco Gold 48AGM
The ACDelco Gold 48AGM is a high-performance battery with superior construction for reliable performance. As a spill-proof AGM battery, it has a high-density negative paste that increases battery life and enhances performance. The battery’s positive grid is made of calcium lead, which maximizes conductivity and allows for low resistance.
Features Highlights:
- Enhanced life alloy.
- Spill-proof AGM design.
- Robust envelope separator.
- Puncture-resistant back.
Odyssey Battery 48-720 Battery
The Odyssey 48-720 Battery is a 12-volt high-performance auto battery that weighs 49 pounds. It’s 10.9 inches long, 7.47 inches wide, and 13 inches tall. It’s designed to produce reliable power for the increased use of onboard accessories in today’s vehicles. The battery has a long service life, high reliability, and deep cycle capabilities.
Features Highlights:
- Long service life.
- High reliability.
- Deep cycle capabilities.
- Spill-proof AGM design.
Best Group H7/94R Battery Models
ACDelco Gold 94RAGM
The ACDelco Gold 94RAGM comes as a highly-reliable multipurpose battery designed for extended use. The high-density negative paste in this model improves its performance and lifespan. Its calcium lead positive grid also maximizes conductivity for low resistance, and the robust envelope separator with a puncture-resistant back allows for increased acid circulation. This, in turn, helps the battery remain cool and extend its life.
Features Highlights:
- High-density negative paste.
- Calcium Lead positive grid.
- Spill-proof design with Vent cap.
- Precision manufactured ribbed case.
Odyssey Battery 94R-850
The Odyssey Battery 94R-850 isn’t your typical battery. It’s a deep-cycle battery that can last up to 70 percent longer than conventional batteries and can store a charge on an open circuit for up to 2 years. It takes around 4-6 hours to get to 100 percent, and you can mount it in any position, except in an inverted position.
Features Highlights:
- High reliability and deep cycle capabilities.
- Excellent choice for daily-use vehicles.
- Absorbent Glass Mat technology.
- Sealed design for maintenance-free operation.
FAQs - H6 vs H7 Battery
Can I use an H7 battery instead of an H6?
Yes, H6 batteries are compatible with vehicles that use H7 batteries and are deep cycle batteries that can tolerate relatively deep discharges.
What battery is the same as an H6?
Group H6 battery is also known as a Group 48 battery.
What does an H6 battery fit?
The H6 battery fits most modern American and European cars, such as the Acura MDX and Chevrolet Colorado.
What does an H7 battery fit?
H7 batteries typically fit in European cars like the Audi A4 and BMW 5 Series, but they can also be used as a replacement for H6 batteries in American vehicles.
Wrap Up: H6 vs H7 Battery
Both H6 and H7 are deep cycle batteries that can withstand deep discharges. H7 batteries are slightly larger than H6 batteries but can be used as a replacement in most cases. The best option for you depends on your vehicle type, your climate, and your driving habits.
James is an engineer and a professional blogger. He has gained extensive experience over the years, handling all types of power projects. He loves to share his experiences with all things related to batteries, generators, and other power-related topics.
