--- title: "51r battery — Niche Verdict: Skip it (43/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/51r-battery" last_updated: "2026-07-10T02:37:09.195Z" locale: en meta: description: "a small market ($93K/yr) — 51r battery doesn't clear our bar today." "og:description": "a small market ($93K/yr) — 51r battery doesn't clear our bar today." "og:title": "51r battery — Niche Verdict: Skip it (43/100) | Amazon United States - Flapen" --- Back to Flapen home # **51r battery** **Skip it****43/100 ** a small market ($93K/yr) — 51r battery doesn't clear our bar today. **Market/yr** **$93K** **Growth (1y)** **+203.2%** **Products** **14** **Brands** **9** was 11 a year ago **Sellers** **19** **Price range** **$8.55–$286.12** **Returns** **2.6%** **Rating** **4.4★** **Skip it** Scored 43/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **5** ×0.30 Growth **77** ×0.30 Competition **27** ×0.20 Quality gap **53** ×0.10 Returns **79** ×0.10 ## **Demand** Weekly Amazon search volume, last 39 weeks — +203.2% year over year. 5K3KHoliday '25Spike '26Oct '25Nov '25Jan '26Feb '26Mar '26May '26Jun '26 ## **Competition** - Interstate Batteries30% - ACDelco28% - OPTIMA18% - Mighty Max Battery10% - WEIZE6% - T.E.T LITHIUM3% - Other (3 brands)5% The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack. 9 brands and 19 sellers compete here. **Brands** **9 **▼falling was 11 a year ago **Sellers** **19** **Top 5 brand share** **92%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![ACDelco Gold 51RAGM (88866315) 36 Month Warranty AGM BCI Group 51R Car Battery](https://m.media-amazon.com/images/I/41mTV3ZAPTL.jpg) [**ACDelco Gold 51RAGM (88866315) 36 Month Warranty AGM BCI Group 51R Car Battery**](https://www.amazon.com/dp/B0F4LQQZFJ) ACDelco$168.034.8★5528%▼falling 2 ![OPTIMA Batteries High Performance D51R YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting](https://m.media-amazon.com/images/I/41P-anJ6uBL.jpg) [**OPTIMA Batteries High Performance D51R YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting**](https://www.amazon.com/dp/B0013ZGZ9Q) OPTIMA$275.264.2★68614%▼falling 3 ![Interstate Batteries Group 51R Car Battery Replacement (MT-51R) 12V 500 CCA 24 Month Warranty Replacement Automotive Battery for Cars SUVs](https://m.media-amazon.com/images/I/41ZZE+0zXRL.jpg) [**Interstate Batteries Group 51R Car Battery Replacement (MT-51R) 12V 500 CCA 24 Month Warranty Replacement Automotive Battery for Cars SUVs**](https://www.amazon.com/dp/B0B89BBYT2) Interstate Batteries$225.805.0★1313%▲rising 4 ![Interstate Batteries Automotive Battery 12V 41Ah 435CCA (Group Size 51R) SLI AGM Auto Replacement Battery for Cars SUVs Sedans Trucks Vans (MTX-51R)](https://m.media-amazon.com/images/I/41hpc5xeJKL.jpg) [**Interstate Batteries Automotive Battery 12V 41Ah 435CCA (Group Size 51R) SLI AGM Auto Replacement Battery for Cars SUVs Sedans Trucks Vans (MTX-51R)**](https://www.amazon.com/dp/B0FPHF56VP) Interstate Batteries$276.884.5★4029%▲rising 5 ![Interstate Batteries Group 51R Car Battery Replacement (M-51R) 12V 425 CCA 18 Month Warranty Replacement Automotive Battery for Cars and SUVs](https://m.media-amazon.com/images/I/41Qzj+QYC8L.jpg) [**Interstate Batteries Group 51R Car Battery Replacement (M-51R) 12V 425 CCA 18 Month Warranty Replacement Automotive Battery for Cars and SUVs**](https://www.amazon.com/dp/B0BN6W8Q5Z) Interstate Batteries$158.403.5★58%▲rising 6 ![Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery 100RC 680CCA 36 Months Warranty Dimensions 9.52 L x 6.89 W x 7.48 H](https://m.media-amazon.com/images/I/414lvBPkJ6L.jpg) [**Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery 100RC 680CCA 36 Months Warranty Dimensions 9.52 L x 6.89 W x 7.48 H**](https://www.amazon.com/dp/B0BXSPTMX2) WEIZE$145.094.4★4,7346%▼falling 7 ![Mighty Max Battery MM-H5 Start and Stop Car BCI Group Size 47 12V 60 AH 100RC 680 CCA Rechargeable AGM Car Battery](https://m.media-amazon.com/images/I/41bjjLyAlZL.jpg) [**Mighty Max Battery MM-H5 Start and Stop Car BCI Group Size 47 12V 60 AH 100RC 680 CCA Rechargeable AGM Car Battery**](https://www.amazon.com/dp/B0CZFTQ89T) Mighty Max Battery$148.364.1★1,3075%▼falling 8 ![OPTIMA Batteries High Performance D51 YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting](https://m.media-amazon.com/images/I/41B3eK3sdrL.jpg) [**OPTIMA Batteries High Performance D51 YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting**](https://www.amazon.com/dp/B00075OSD8) OPTIMA$286.124.5★2344%▼falling 9 ![Mighty Max Battery 12V 55AH INT Battery Replacement for Megavolt Flooded BCI 51R](https://m.media-amazon.com/images/I/41XxSHneH4L.jpg) [**Mighty Max Battery 12V 55AH INT Battery Replacement for Megavolt Flooded BCI 51R**](https://www.amazon.com/dp/B08LYW4DJ8) Mighty Max Battery$118.000.0★03%▼falling 10 ![TET Group 51 Lithium Car Battery | LiFePO4 Automotive Starter Battery | 12.8V 28Ah 840CCA | Built-in BMS | 2-Year Warranty](https://m.media-amazon.com/images/I/41nuas3X7BL.jpg) [**TET Group 51 Lithium Car Battery | LiFePO4 Automotive Starter Battery | 12.8V 28Ah 840CCA | Built-in BMS | 2-Year Warranty**](https://www.amazon.com/dp/B0FKSSFQ38) T.E.T LITHIUM$245.264.5★363%▲rising 11 ![Mighty Max Battery MM-G35 Start and Stop Car BCI Group Size 35 12V 55Ah 100RC 650 CCA Rechargeable AGM Car battery](https://m.media-amazon.com/images/I/41cA-l0S4JL.jpg) [**Mighty Max Battery MM-G35 Start and Stop Car BCI Group Size 35 12V 55Ah 100RC 650 CCA Rechargeable AGM Car battery**](https://www.amazon.com/dp/B0DMBTCYNW) Mighty Max Battery$146.284.1★1,3072%▲rising 12 ![Car Battery Terminal Connectors 2 Pcs 4 Way Quick Release Disconnect Car Battery Terminal for SAE/JIS Type A Posts Compatible With Cars Vans Trucks and More](https://m.media-amazon.com/images/I/51CvYLlHB6L.jpg) [**Car Battery Terminal Connectors 2 Pcs 4 Way Quick Release Disconnect Car Battery Terminal for SAE/JIS Type A Posts Compatible With Cars Vans Trucks and More**](https://www.amazon.com/dp/B09GLVT5H2) Moly Magnolia$8.554.4★9,4262%—flat 13 ![Renogy 12V 70Ah AGM Car Battery H6 Group 48 Start and Stop Automotive Battery with 720 CCA 120RC Reliable Power for Cars SUVs Trucks and Marine Starting](https://m.media-amazon.com/images/I/31Tsb78Y6HL.jpg) [**Renogy 12V 70Ah AGM Car Battery H6 Group 48 Start and Stop Automotive Battery with 720 CCA 120RC Reliable Power for Cars SUVs Trucks and Marine Starting**](https://www.amazon.com/dp/B0FR4ZG883) Renogy$146.024.4★1,2302%▲rising 14 ![Daakmax Platinum AGM Car Battery Group Size 47 H5 12V 60Ah 680 CCA 100 RC Rechargeable Start-Stop Automotive Battery with 36-Month Warranty](https://m.media-amazon.com/images/I/41mppDsNxkL.jpg) [**Daakmax Platinum AGM Car Battery Group Size 47 H5 12V 60Ah 680 CCA 100 RC Rechargeable Start-Stop Automotive Battery with 36-Month Warranty**](https://www.amazon.com/dp/B0GWHJKV7B) Daakmax$133.994.4★702%▲rising ## **Product shelf** All 14 tracked products in this niche. Top sellersNewestTrending [![ACDelco Gold 51RAGM (88866315) 36 Month Warranty AGM BCI Group 51R Car Battery](https://m.media-amazon.com/images/I/41mTV3ZAPTL.jpg)**ACDelco Gold 51RAGM (88866315) 36 Month Warranty AGM BCI Group 51R Car Battery** ACDelco**$168.03**4.8★55 reviews](https://www.amazon.com/dp/B0F4LQQZFJ) [![OPTIMA Batteries High Performance D51R YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting](https://m.media-amazon.com/images/I/41P-anJ6uBL.jpg)**OPTIMA Batteries High Performance D51R YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting** OPTIMA**$275.26**4.2★686 reviews](https://www.amazon.com/dp/B0013ZGZ9Q) [![Interstate Batteries Group 51R Car Battery Replacement (MT-51R) 12V 500 CCA 24 Month Warranty Replacement Automotive Battery for Cars SUVs](https://m.media-amazon.com/images/I/41ZZE+0zXRL.jpg)**Interstate Batteries Group 51R Car Battery Replacement (MT-51R) 12V 500 CCA 24 Month Warranty Replacement Automotive Battery for Cars SUVs** Interstate Batteries**$225.80**5.0★13 reviews](https://www.amazon.com/dp/B0B89BBYT2) [![Interstate Batteries Automotive Battery 12V 41Ah 435CCA (Group Size 51R) SLI AGM Auto Replacement Battery for Cars SUVs Sedans Trucks Vans (MTX-51R)](https://m.media-amazon.com/images/I/41hpc5xeJKL.jpg)**Interstate Batteries Automotive Battery 12V 41Ah 435CCA (Group Size 51R) SLI AGM Auto Replacement Battery for Cars SUVs Sedans Trucks Vans (MTX-51R)** Interstate Batteries**$276.88**4.5★402 reviews](https://www.amazon.com/dp/B0FPHF56VP) [![Interstate Batteries Group 51R Car Battery Replacement (M-51R) 12V 425 CCA 18 Month Warranty Replacement Automotive Battery for Cars and SUVs](https://m.media-amazon.com/images/I/41Qzj+QYC8L.jpg)**Interstate Batteries Group 51R Car Battery Replacement (M-51R) 12V 425 CCA 18 Month Warranty Replacement Automotive Battery for Cars and SUVs** Interstate Batteries**$158.40**3.5★5 reviews](https://www.amazon.com/dp/B0BN6W8Q5Z) [![Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery 100RC 680CCA 36 Months Warranty Dimensions 9.52 L x 6.89 W x 7.48 H](https://m.media-amazon.com/images/I/414lvBPkJ6L.jpg)**Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery 100RC 680CCA 36 Months Warranty Dimensions 9.52 L x 6.89 W x 7.48 H** WEIZE**$145.09**4.4★4,734 reviews](https://www.amazon.com/dp/B0BXSPTMX2) [![Mighty Max Battery MM-H5 Start and Stop Car BCI Group Size 47 12V 60 AH 100RC 680 CCA Rechargeable AGM Car Battery](https://m.media-amazon.com/images/I/41bjjLyAlZL.jpg)**Mighty Max Battery MM-H5 Start and Stop Car BCI Group Size 47 12V 60 AH 100RC 680 CCA Rechargeable AGM Car Battery** Mighty Max Battery**$148.36**4.1★1,307 reviews](https://www.amazon.com/dp/B0CZFTQ89T) [![OPTIMA Batteries High Performance D51 YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting](https://m.media-amazon.com/images/I/41B3eK3sdrL.jpg)**OPTIMA Batteries High Performance D51 YELLOWTOP Dual Purpose Sealed AGM Car Truck and SUV Battery 450 CCA Maintenance Free Versatile Mounting** OPTIMA**$286.12**4.5★234 reviews](https://www.amazon.com/dp/B00075OSD8) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Battery Life**31% *“Battery works good”* **Size-Overall**11% *“It fit like a glove”* **Quality-Overall**11% *“Great product well made”* **Assembly/Installation**7% *“Easy Install”* **Value For Money**7% *“Great value”* **Ease Of Use**5% *“Easy to use”* **Advertised Vs Actual Product**4% *“As listed”* **Charging**3% *“full charge”* **Connectivity-Overall**3% *“Ideal for quick connect”* **Durability**2% *“Performance and durability”* ### **What buyers complain about ** **Durability**19% *“does not last”* **Battery Life**19% *“Battery was dead”* **Quality-Overall**14% *“Garbage”* **Size-Overall**11% *“Does not FIT”* **Charging**10% *“Will not take a charge”* **Rusts/Corrodes**4% *“May have been because of the corrosion”* **Compatibility-Overall**3% *“Does not fit 2017 JK Sahara”* **Advertised Vs Actual Product**2% *“Deceptive, then extremely difficult to deal with”* **Value For Money**2% *“Its not worth it”* **Weight Heavy**2% *“But,this is heavier, taller and wider little bit than my original Toyota battery”* #### **Top return reasons**- Size-Overall40% - Compatibility-Overall20% - Advertised Vs Actual Product5% - Defective Material/Parts4% - Value For Money4% - Charging4% - Battery Life4% - Assembly/Installation4% - Functionality-Overall4% - Quality-Overall3%