Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Advertising Disclosure
10 Best marine battery group sizes of 2025
Save up to 24% off
Best Choice1
Interstate BatteriesInterstate Batteries Marine/RV Battery 12V 100Ah 825CCA Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 31M) Boats, RV's (8-31MAGMDC / 31M-AGM-A)
9.9Exceptional
-
-
Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
Trusted insights AI and human analysis guide your decisions, reflecting real user prioritiesReal users impact
Thousands of users trust our site daily
- Based on millions of stores and reviews
- Shoppers influence our rankings
Analyzing top stores
Value for Money2
Interstate BatteriesInterstate Batteries Marine Deep Cycle Battery 12V 100Ah 925CCA (31-AGM5) Pure Matrix Power Commercial Battery Pure Lead AGM Replacement (Group 31) Auxiliary Units APU, Starting Engines, Heavy Duty
Key specs-
features:Extreme deep-cycle power
-
batteries:1 12V batteries included
-
dimensions:13 x 6.77 x 9 inches
-
amperage:N/A
-
warranty:N/A
9.8Exceptional
-
3
WEIZEWeize BCI Group 31M Dual Purpose AGM Battery, 240RC 825CCA 12V 110AH Starter & Deep Cycle Sealed Marine & RV Battery
Key specs-
amperage:21A max charging
-
terminal:Left: Positive, Right: Negative
-
voltage:14.4V constant
-
dimensions:6.81 x 12.99 x 8.35 inches
-
cold cranking:N/A
9.7Exceptional
-
4
WEIZEWeize Dual Purpose AGM Battery BCI Group 24M, Starter & Deep Cycle 150RC 550CCA 12V 90AH Sealed Marine & RV Battery
9.6Exceptional
-
5
Interstate BatteriesInterstate Batteries Marine/RV Battery 12V 70Ah 750CCA (8-24MAGM) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 24) Boats, RV's
9.5Excellent
-
-
See Today’s Deals & Prices
6
CHITOLICHITOLI 12V 100Ah BCI Group 24 LiFePO4 Battery, Max. 15000 Deep Cycle Lithium Rechargeable Battery, Built in 100A BMS for RV, Trolling Motor, Camping, Marine, Home Energy Storage
15% Off9.2Excellent
-
7
GREENOE12V 100Ah LiFePO4 Battery Group 31 With Built-in 100A BMS, 15000 Deep Cycles Rechargeable Lithium Battery Prefect for Solar System, Rvs, Marine, Vans, Trailer, Backup
Key specs-
features:Smart Low Temperature Cut-Off
-
batteries:1 Lithium Ion
-
dimensions:6.7 x 12.9 x 8.6 inches
-
amperage:300A max discharge
-
warranty:36 months
9.1Excellent
-
8
NOCONOCO Snap-Top BG31 Battery Box, Group 24-31 12V Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries
9.0Excellent
-
9
GRNOE2-Pack 12V 100Ah LiFePO4 Lithium Battery Group 31 Built-in 100A BMS, Low-Temp Protection Up to 15000 Deep Cycles Rechargeable Battery for RV, Marine, Solar System, Van, Trailer, Home Energy Storage
10% Off8.9Very Good
-
10
NOCONOCO Snap-Top BG24 Battery Box, Group 24 12V Battery Box for Marine, Automotive, RV, Boat, Camper and Travel Trailer Batteries
24% Off8.7Very Good
-
