--- title: "group 31 battery — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/group-31-battery" last_updated: "2026-07-10T02:36:40.613Z" locale: en meta: description: "group 31 battery shows low returns (2.3%), but a small market ($430K/yr) keeps it on the watch list." "og:description": "group 31 battery shows low returns (2.3%), but a small market ($430K/yr) keeps it on the watch list." "og:title": "group 31 battery — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen" --- Back to Flapen home # **group 31 battery** **Worth a look****55/100 ** group 31 battery shows low returns (2.3%), but a small market ($430K/yr) keeps it on the watch list. **Market/yr** **$430K** **Growth (1y)** **+181.6%** **Products** **30** **Brands** **13** was 21 a year ago **Sellers** **48** **Price range** **$86.68–$520.36** **Returns** **2.3%** **Rating** **4.3★** **Worth a look** Scored 55/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **22** ×0.30 Growth **75** ×0.30 Competition **57** ×0.20 Quality gap **62** ×0.10 Returns **82** ×0.10 ## **Demand** Weekly Amazon search volume, last 53 weeks — +181.6% year over year. 7K3KPrime Day '25Spike '25Black Friday '25Holiday '25Spike '26Jul '25Aug '25Oct '25Dec '25Feb '26Apr '26Jun '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Jan, Feb, Apr, May, Jun, Dec · busiest ÷ quietest = 4.9× ## **Competition** - Interstate Batteries69% - WEIZE7% - VEMDIA5% - Renogy4% - Mighty Max Battery4% - Litime3% - Other (7 brands)10% The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them. 13 brands and 48 sellers compete here. **Brands** **13 **▼falling was 21 a year ago **Sellers** **48** **Top 5 brand share** **87%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![Interstate Batteries Marine/RV Battery 12V 100Ah 825CCA Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 31M) Boats RVs (8-31MAGMDC / 31M-AGM-A)](https://m.media-amazon.com/images/I/41CxQ3OUcHL.jpg) [**Interstate Batteries Marine/RV Battery 12V 100Ah 825CCA Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 31M) Boats RVs (8-31MAGMDC / 31M-AGM-A)**](https://www.amazon.com/dp/B0BHTT7K4J) Interstate Batteries$286.154.6★5522%▲rising 2 ![Interstate 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](https://m.media-amazon.com/images/I/31zt+XjvDCL.jpg) [**Interstate 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**](https://www.amazon.com/dp/B0BHX3FBCQ) Interstate Batteries$280.374.1★5512%—flat 3 ![Interstate Batteries Marine/RV Battery 12V 70Ah 750CCA (24M-AGM) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 24) Boats RVs](https://m.media-amazon.com/images/I/415V9jWpIoL.jpg) [**Interstate Batteries Marine/RV Battery 12V 70Ah 750CCA (24M-AGM) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 24) Boats RVs**](https://www.amazon.com/dp/B0BHTWRDNQ) Interstate Batteries$256.084.6★368%▲rising 4 ![Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery (DCM0035) Insert Terminals](https://m.media-amazon.com/images/I/41YTlYD1AML.jpg) [**Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery (DCM0035) Insert Terminals**](https://www.amazon.com/dp/B005CLPOQM) Interstate Batteries$106.294.4★1,7966%▲rising 5 ![12V 100Ah LiFePO4 Lithium Battery Group 31 Deep Cycle with Smart 100A BMS & Low Temp Cut-Off 15000 Cycles 10-Year Life Lightweight Replacement for RV Solar Marine Home Backup Off-Grid](https://m.media-amazon.com/images/I/41LTEgM99JL.jpg) [**12V 100Ah LiFePO4 Lithium Battery Group 31 Deep Cycle with Smart 100A BMS & Low Temp Cut-Off 15000 Cycles 10-Year Life Lightweight Replacement for RV Solar Marine Home Backup Off-Grid**](https://www.amazon.com/dp/B0FP525PFP) VEMDIA$146.734.1★335%▲rising 6 ![Weize BCI Group 31M Dual Purpose AGM Battery 240RC 825CCA 12V 110AH Starter & Deep Cycle Sealed Marine & RV Battery](https://m.media-amazon.com/images/I/41y5-nzWEhL.jpg) [**Weize BCI Group 31M Dual Purpose AGM Battery 240RC 825CCA 12V 110AH Starter & Deep Cycle Sealed Marine & RV Battery**](https://www.amazon.com/dp/B0CJVHQRHB) WEIZE$236.814.3★2274%▲rising 7 ![Renogy Deep Cycle AGM 12 Volt 100Ah Battery 3% Self-Discharge Rate 1100A Max Discharge Current Safe Charge Appliances for RV Camping Cabin Marine and Off-Grid System Maintenance-Free](https://m.media-amazon.com/images/I/31soCn59teL.jpg) [**Renogy Deep Cycle AGM 12 Volt 100Ah Battery 3% Self-Discharge Rate 1100A Max Discharge Current Safe Charge Appliances for RV Camping Cabin Marine and Off-Grid System Maintenance-Free**](https://www.amazon.com/dp/B075RFXHYK) Renogy$167.904.4★2,2294%▼falling 8 ![Interstate Batteries Automotive Battery 12V 80Ah (Group Size H7 94R) 850CCA SLI AGM Automobile Replacement Battery for Cars SUVs Sedans Trucks (MTX-94R/H7)](https://m.media-amazon.com/images/I/41DiHTdndBL.jpg) [**Interstate Batteries Automotive Battery 12V 80Ah (Group Size H7 94R) 850CCA SLI AGM Automobile Replacement Battery for Cars SUVs Sedans Trucks (MTX-94R/H7)**](https://www.amazon.com/dp/B0BH8G6CSC) Interstate Batteries$276.184.5★4024%▼falling 9 ![Interstate Batteries Marine/RV Battery 12V 100Ah 925CCA (31M-AGM) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 31M) Boats RVs](https://m.media-amazon.com/images/I/41X2sSecGkL.jpg) [**Interstate Batteries Marine/RV Battery 12V 100Ah 925CCA (31M-AGM) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 31M) Boats RVs**](https://www.amazon.com/dp/B0BHTWXSY8) Interstate Batteries$454.474.4★233%▼falling 10 ![Weize Deep Cycle AGM 12 Volt 100Ah Battery Maintenance-Free 3% Self-Discharge Rate 1150A Max Discharge Current Perfect for RV Solar Trolling Motor Wind Marine Camping and Off-Grid System](https://m.media-amazon.com/images/I/41bqV6Wt2oL.jpg) [**Weize Deep Cycle AGM 12 Volt 100Ah Battery Maintenance-Free 3% Self-Discharge Rate 1150A Max Discharge Current Perfect for RV Solar Trolling Motor Wind Marine Camping and Off-Grid System**](https://www.amazon.com/dp/B07SW353M8) WEIZE$164.084.4★2,3683%—flat 11 ![Interstate Batteries Automotive Battery 12V 70Ah (Group Size H6 48) 760CCA SLI AGM Automobile Replacement Battery for Cars SUVs Sedans Trucks (MTX-48/H6)](https://m.media-amazon.com/images/I/41p8nQEIohL.jpg) [**Interstate Batteries Automotive Battery 12V 70Ah (Group Size H6 48) 760CCA SLI AGM Automobile Replacement Battery for Cars SUVs Sedans Trucks (MTX-48/H6)**](https://www.amazon.com/dp/B09G4J6ZV4) Interstate Batteries$275.654.5★4023%▼falling 12 ![Mighty Max Battery MM-G31 Start and Stop Car BCI Group 31 12V 100AH 140RC 900 CCA Rechargeable AGM Car battery](https://m.media-amazon.com/images/I/41yheMeOvTL.jpg) [**Mighty Max Battery MM-G31 Start and Stop Car BCI Group 31 12V 100AH 140RC 900 CCA Rechargeable AGM Car battery**](https://www.amazon.com/dp/B0FPRKYWBF) Mighty Max Battery$223.524.1★1,3072%—flat 13 ![Interstate Batteries Automotive Battery 12V 55Ah (Group Size 35) 650CCA SLI AGM Auto Battery Replacement for Cars SUVs Sedans Trucks (MTX-35)](https://m.media-amazon.com/images/I/418j5UkTetL.jpg) [**Interstate Batteries Automotive Battery 12V 55Ah (Group Size 35) 650CCA SLI AGM Auto Battery Replacement for Cars SUVs Sedans Trucks (MTX-35)**](https://www.amazon.com/dp/B00QDBT7MM) Interstate Batteries$275.464.5★4022%▼falling 14 ![Interstate Batteries Heavy Duty Marine Deep Cycle Battery 12V 100Ah 925CCA (31-AGM7) Pure Matrix Power Commercial AGM Cranking Replacement (Group Size 31) GEM Cars Yachts Extra Fuel Tank Trucks](https://m.media-amazon.com/images/I/4166CEJFTtL.jpg) [**Interstate Batteries Heavy Duty Marine Deep Cycle Battery 12V 100Ah 925CCA (31-AGM7) Pure Matrix Power Commercial AGM Cranking Replacement (Group Size 31) GEM Cars Yachts Extra Fuel Tank Trucks**](https://www.amazon.com/dp/B0BHX4F6LX) Interstate Batteries$418.434.2★62%—flat 15 ![Interstate Batteries Automotive Battery 12V 70Ah (Group Size 24F) 710CCA SLI AGM Auto Battery Replacement for Cars SUVs Sedans Trucks (MTX-24F)](https://m.media-amazon.com/images/I/41DgBPGrc+L.jpg) [**Interstate Batteries Automotive Battery 12V 70Ah (Group Size 24F) 710CCA SLI AGM Auto Battery Replacement for Cars SUVs Sedans Trucks (MTX-24F)**](https://www.amazon.com/dp/B0CMWYG6YH) Interstate Batteries$277.294.5★4022%▼falling **~~Showing 15 of 30 — show all ~~** ## **Product shelf** All 30 tracked products in this niche. Top sellersNewestTrending [![Interstate Batteries Marine/RV Battery 12V 100Ah 825CCA Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 31M) Boats RVs (8-31MAGMDC / 31M-AGM-A)](https://m.media-amazon.com/images/I/41CxQ3OUcHL.jpg)**Interstate Batteries Marine/RV Battery 12V 100Ah 825CCA Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 31M) Boats RVs (8-31MAGMDC / 31M-AGM-A)** Interstate Batteries**$286.15**4.6★55 reviews](https://www.amazon.com/dp/B0BHTT7K4J) [![Interstate 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](https://m.media-amazon.com/images/I/31zt+XjvDCL.jpg)**Interstate 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** Interstate Batteries**$280.37**4.1★55 reviews](https://www.amazon.com/dp/B0BHX3FBCQ) [![Interstate Batteries Marine/RV Battery 12V 70Ah 750CCA (24M-AGM) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 24) Boats RVs](https://m.media-amazon.com/images/I/415V9jWpIoL.jpg)**Interstate Batteries Marine/RV Battery 12V 70Ah 750CCA (24M-AGM) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (Group Size 24) Boats RVs** Interstate Batteries**$256.08**4.6★36 reviews](https://www.amazon.com/dp/B0BHTWRDNQ) [![Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery (DCM0035) Insert Terminals](https://m.media-amazon.com/images/I/41YTlYD1AML.jpg)**Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery (DCM0035) Insert Terminals** Interstate Batteries**$106.29**4.4★1,796 reviews](https://www.amazon.com/dp/B005CLPOQM) [![12V 100Ah LiFePO4 Lithium Battery Group 31 Deep Cycle with Smart 100A BMS & Low Temp Cut-Off 15000 Cycles 10-Year Life Lightweight Replacement for RV Solar Marine Home Backup Off-Grid](https://m.media-amazon.com/images/I/41LTEgM99JL.jpg)**12V 100Ah LiFePO4 Lithium Battery Group 31 Deep Cycle with Smart 100A BMS & Low Temp Cut-Off 15000 Cycles 10-Year Life Lightweight Replacement for RV Solar Marine Home Backup Off-Grid** VEMDIA**$146.73**4.1★33 reviews](https://www.amazon.com/dp/B0FP525PFP) [![Weize BCI Group 31M Dual Purpose AGM Battery 240RC 825CCA 12V 110AH Starter & Deep Cycle Sealed Marine & RV Battery](https://m.media-amazon.com/images/I/41y5-nzWEhL.jpg)**Weize BCI Group 31M Dual Purpose AGM Battery 240RC 825CCA 12V 110AH Starter & Deep Cycle Sealed Marine & RV Battery** WEIZE**$236.81**4.3★227 reviews](https://www.amazon.com/dp/B0CJVHQRHB) [![Renogy Deep Cycle AGM 12 Volt 100Ah Battery 3% Self-Discharge Rate 1100A Max Discharge Current Safe Charge Appliances for RV Camping Cabin Marine and Off-Grid System Maintenance-Free](https://m.media-amazon.com/images/I/31soCn59teL.jpg)**Renogy Deep Cycle AGM 12 Volt 100Ah Battery 3% Self-Discharge Rate 1100A Max Discharge Current Safe Charge Appliances for RV Camping Cabin Marine and Off-Grid System Maintenance-Free** Renogy**$167.90**4.4★2,229 reviews](https://www.amazon.com/dp/B075RFXHYK) [![Interstate Batteries Automotive Battery 12V 80Ah (Group Size H7 94R) 850CCA SLI AGM Automobile Replacement Battery for Cars SUVs Sedans Trucks (MTX-94R/H7)](https://m.media-amazon.com/images/I/41DiHTdndBL.jpg)**Interstate Batteries Automotive Battery 12V 80Ah (Group Size H7 94R) 850CCA SLI AGM Automobile Replacement Battery for Cars SUVs Sedans Trucks (MTX-94R/H7)** Interstate Batteries**$276.18**4.5★402 reviews](https://www.amazon.com/dp/B0BH8G6CSC) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Battery Life**39% *“Excellent battery”* **Quality-Overall**11% *“Great product, exactly what I ordered”* **Value For Money**10% *“Good price”* **Charging**8% *“They charge fast”* **Weight Light**7% *“Im really happy with its light weight and power output”* **Size-Overall**5% *“Perfect fit”* **Durability**3% *“reliability”* **Strength**2% *“Well maintained,”* **Efficiency**2% *“They have performed well”* **Advertised Vs Actual Product**2% *“Works as expected”* ### **What buyers complain about ** **Charging**30% *“Charges Very slow”* **Battery Life**25% *“Bad Battery”* **Durability**6% *“Short life”* **Size-Overall**5% *“Amazon is saying it does not fit”* **Value For Money**5% *“Super expensive these days”* **Quality-Overall**5% *“Poor performance”* **Functionality-Overall**4% *“Started zero turn Bad Boy immediately”* **Connectivity-Overall**2% *“none will connect to app to read BMS”* **Assembly/Installation**2% *“I should have taken that out for an easier install”* **Motor Issues**2% *“took it home put it on charge and charger said fully charge so I put the trolling motor to it and no power”* #### **Top return reasons**- Size-Overall37% - Battery Life13% - Charging10% - Compatibility-Overall7% - Functionality-Overall6% - Advertised Vs Actual Product6% - Defective Material/Parts6% - Weight Heavy4% - Value For Money4% - Assembly/Installation2%