Car Battery Weight: How Much Does A Car Battery Weigh?

Cars and other vehicles come in various sizes and types, so do their batteries differ in size, type, chemistry, and a few more details, including, of course, their weight.

While car battery weight doesn't influence, at least not by much, performances of most passenger cars, SUVs, RVs, and similar, racing cars benefit from any weight savings. For this and many other reasons, people often ask how much does a car battery weigh.

Published: April 8, 2022.

Car Battery Types and BCI Group Sizes

The most common car battery types are lead-acid and lithium starting batteries, although vehicles with larger electric load (multimedia devices, winches, etc.) may have dual-purpose batteries.

Also, RV house batteries are almost exclusively deep-cycle batteries, but such batteries are not discussed in this article.

Car batteries differ in size, too, with the top 10 most popular car BCI group battery sizes:

• BCI Group 24 Batteries
• BCI Group 34/78 Batteries
• BCI Group 35 Batteries
• BCI Group 47 (H5, L2, 55L2) Batteries
• BCI Group 48 (H6, L3, 66L3) Batteries
• BCI Group 49 (H8, L5, 88L5) Batteries
• BCI Group 51 and 51R Batteries
• BCI Group 65 Batteries
• BCI Group 75 Batteries
• BCI Group 94R Batteries

 Of course, other BCI battery groups are used as well, but not as often as these ones.

The Weight Of The Car Batteries By Their BCI Group Size

The following list shows the average car battery weight according to the car's battery size/group and chemistry:

BCI Group 24 Batteries

The following comparison chart lists some of the most popular BCI group 24 batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

As one can see, BCI Group 24 batteries are mostly deep-cycle and dual-purpose batteries used in cars with dual battery systems.

BCI group 24 batteries on average weigh 43-57 pounds (~19.5-25.8 kg) and are still mostly lead-acid batteries.

However, if you need a starting BCI group 24 battery and you are unable to find one, consider getting a starting group 34 battery - they are smaller and lighter, but they are optimized for starting/cranking applications and can provide stronger currents than deep-cycle group 24 batteries.

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 34 lead-acid batteries on average weigh 37-51 pounds (~16.8-23.1 kg) while lithium group 34 batteries weigh ~14 pounds (~6.3 kg).

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BCI Group 34/78 Batteries

The following comparison chart lists some of the most popular BCI group 34/78 batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 34/78 lead-acid batteries on average weigh 37-51 pounds (~16.8-23.1 kg).

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BCI Group 35 Batteries

The following comparison chart lists some of the most popular BCI group 35 batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 35 lead-acid batteries on average weigh 31-50 pounds (~14-22.7 kg), while lithium group 35 batteries weigh ~16 pounds (~7.3 kg).

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BCI Group 47 (H5, L2, 55L2) Batteries

The following comparison chart lists some of the most popular BCI group 47 (H5, L2, 55L2) batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 47 (H5, L2, 55L2) lead-acid batteries on average weigh 39-41 pounds (~17.7-18.6 kg).

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BCI Group 48 (H6, L3, 66L3) Batteries

The following comparison chart lists some of the most popular BCI group 48 (H6, L3, 66L3) batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 48 (H6, L3, 66L3) lead-acid batteries on average weigh 45-54 pounds (~20.4-24.5 kg).

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BCI Group 49 (H8, L5, 88L5) Batteries

The following comparison chart lists some of the most popular BCI group 49 (H8, L5, 88L5) batteries with their most important features and specifications: 

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 49 (H8, L5, 88L5) lead-acid batteries on average weigh 57-63 pounds (~25.9-28.6 kg).

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BCI Group 51 and 51R Batteries

The following comparison chart lists some of the most popular BCI group 51/51R batteries with their most important features and specifications: 

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 51/51R lead-acid batteries on average weigh 25-43 pounds (~11.4-19.5 kg), with deep cycle group 51/51R batteries weighing significantly more than starting group 51/51R batteries.

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BCI Group 65 Batteries

The following comparison chart lists some of the most popular BCI group 65 batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 65 lead-acid batteries on average weigh 45-57 pounds (~20.4-25.9 kg), while lithium group 65 batteries weigh ~26 pounds (~11.8 kg).

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BCI Group 75 Batteries

The following comparison chart lists some of the most popular BCI group 75 batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

 BCI group 75 lead-acid batteries on average weigh 33-46 pounds (~15-20.9 kg).

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BCI Group 94R Batteries

The following comparison chart lists some of the most popular BCI group 94R batteries with their most important features and specifications:

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

BCI group 94R lead-acid batteries on average weigh 52-75 pounds (~23.6-34 kg), while lithium group 94R batteries weigh ~17 pounds (7.7 kg).

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Few Final Words

 

When the weight savings can bring an increase in performance, switching from lead-acid to lithium batteries can save some weight.

For passenger, SUV, RVs, and similar vehicles, the weight of the battery is not that important, although it may be important when the battery has to be carried by an individual, especially for longer distances.

However, vehicles that feature larger dual-purpose or even deep-cycle battery packs can significantly save in weight if they replace their lead-acid BCI Group 31 Batteries or BCI Group 4D/6D/8D Batteries with ultralight lithium batteries.