--- title: "np4-12 12v 4.0ah battery — Niche Verdict: Skip it (33/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/np4-12-12v-4-0ah-battery" last_updated: "2026-07-10T03:45:49.264Z" locale: en meta: description: "a small market ($34K/yr) — np4-12 12v 4.0ah battery doesn't clear our bar today." "og:description": "a small market ($34K/yr) — np4-12 12v 4.0ah battery doesn't clear our bar today." "og:title": "np4-12 12v 4.0ah battery — Niche Verdict: Skip it (33/100) | Amazon United States - Flapen" --- Back to Flapen home # **np4-12 12v 4.0ah battery** **Skip it****33/100 ** a small market ($34K/yr) — np4-12 12v 4.0ah battery doesn't clear our bar today. **Market/yr** **$34K** **Growth (1y)** **+131.3%** **Products** **11** **Brands** **7** was 7 a year ago **Sellers** **23** **Price range** **$17.53–$42.68** **Returns** **2.4%** **Rating** **4.7★** **Skip it** Scored 33/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **2** ×0.30 Growth **69** ×0.30 Competition **9** ×0.20 Quality gap **20** ×0.10 Returns **81** ×0.10 ## **Competition** - Yuasa31% - Enersys25% - Casil22% - UPLUS NEW TECHNOLOGY BATTERY11% - SigmasTek5% - Mighty Max Battery4% - Other (1 brands)2% The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack. 7 brands and 23 sellers compete here. **Brands** **7 **—flat was 7 a year ago **Sellers** **23** **Top 5 brand share** **95%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![YUASA Battery NP4-12 General Purpose VRLA 12V 4AH Battery Lead Calcium Grids for Superior Life Absorbed Glass Mat Construction with No Free Acid Gas Recombination](https://m.media-amazon.com/images/I/41-VDzbQiQL.jpg) [**YUASA Battery NP4-12 General Purpose VRLA 12V 4AH Battery Lead Calcium Grids for Superior Life Absorbed Glass Mat Construction with No Free Acid Gas Recombination**](https://www.amazon.com/dp/B004J2TR1I) Yuasa$25.514.6★1,31029%▲rising 2 ![EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector](https://m.media-amazon.com/images/I/41e+ejSwa4L.jpg) [**EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector**](https://www.amazon.com/dp/B000LDIJ72) Enersys$25.624.7★1,93920%▼falling 3 ![Casil CA1240 12V 4Ah SLA/AGM Sealed Lead-Acid Maintenance-Free Alarm Battery F1 Terminals](https://m.media-amazon.com/images/I/41HZSygzytL.jpg) [**Casil CA1240 12V 4Ah SLA/AGM Sealed Lead-Acid Maintenance-Free Alarm Battery F1 Terminals**](https://www.amazon.com/dp/B004QC8WZI) Casil$21.894.6★6,37419%▲rising 4 ![UPLUS LP12-4.0 12V 4AH Rechargeable SLA AGM Battery with F1/F2 terminals Replacement Batteries for Alarm Security Control Panel Garage Door Opener Ion Block Rockers UPS Ride On Truck etc.](https://m.media-amazon.com/images/I/41GgZeBSOeL.jpg) [**UPLUS LP12-4.0 12V 4AH Rechargeable SLA AGM Battery with F1/F2 terminals Replacement Batteries for Alarm Security Control Panel Garage Door Opener Ion Block Rockers UPS Ride On Truck etc.**](https://www.amazon.com/dp/B09V4GVNYQ) UPLUS NEW TECHNOLOGY BATTERY$18.894.6★2,68411%▼falling 5 ![EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector (2 Pack)](https://m.media-amazon.com/images/I/41JtvAAU74L.jpg) [**EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector (2 Pack)**](https://www.amazon.com/dp/B00V57JC74) Enersys$42.684.7★785%▼falling 6 ![Mighty Max Battery ML5-12 - 12 Volt 5 AH F1 Terminal Rechargeable SLA AGM Battery](https://m.media-amazon.com/images/I/41L69i-K-SL.jpg) [**Mighty Max Battery ML5-12 - 12 Volt 5 AH F1 Terminal Rechargeable SLA AGM Battery**](https://www.amazon.com/dp/B079ZCJYP3) Mighty Max Battery$17.534.6★10,4594%▼falling 7 ![NP4-12FR 12 Volt 5 AmpH SLA Replacement Battery with F1 Terminal](https://m.media-amazon.com/images/I/31nbPAYd0dL.jpg) [**NP4-12FR 12 Volt 5 AmpH SLA Replacement Battery with F1 Terminal**](https://www.amazon.com/dp/B00ARAMP4W) SigmasTek$17.534.6★224%▲rising 8 ![Casil CA1250 12V 5Ah SLA AGM Alarm Battery Rechargeable Sealed Lead Acid Upgrade Replacement for CA1240 12V 4Ah ADT Security Systems UPS Backup Power](https://m.media-amazon.com/images/I/41cu84hH6ML.jpg) [**Casil CA1250 12V 5Ah SLA AGM Alarm Battery Rechargeable Sealed Lead Acid Upgrade Replacement for CA1240 12V 4Ah ADT Security Systems UPS Backup Power**](https://www.amazon.com/dp/B07Q413L1T) Casil$20.444.7★2143%▲rising 9 ![Yuasa NP4-12 Battery 12 Volt 4 Amp Sealed Lead Acid Battery (2)](https://m.media-amazon.com/images/I/41wnKbF9CzL.jpg) [**Yuasa NP4-12 Battery 12 Volt 4 Amp Sealed Lead Acid Battery (2)**](https://www.amazon.com/dp/B00V3WDJQ6) Yuasa$41.264.6★742%—flat 10 ![NP4-12-F2 12 Volt 5.5 AmpH SLA Replacement Battery with F2 Terminal](https://m.media-amazon.com/images/I/41ZhDBaF7-L.jpg) [**NP4-12-F2 12 Volt 5.5 AmpH SLA Replacement Battery with F2 Terminal**](https://www.amazon.com/dp/B00ARAL1HO) SigmasTek$17.745.0★12%—flat 11 ![NP4-12 - 12 Volt/4 Amp Hour SLA Battery with 0.187 Fast-on Connector 3 Year Warranty](https://m.media-amazon.com/images/I/51xdZZRkKnL.jpg) [**NP4-12 - 12 Volt/4 Amp Hour SLA Battery with 0.187 Fast-on Connector 3 Year Warranty**](https://www.amazon.com/dp/B00JS4GQ5W) PowerStar$30.135.0★22%▲rising ## **Product shelf** All 11 tracked products in this niche. Top sellersNewestTrending [![YUASA Battery NP4-12 General Purpose VRLA 12V 4AH Battery Lead Calcium Grids for Superior Life Absorbed Glass Mat Construction with No Free Acid Gas Recombination](https://m.media-amazon.com/images/I/41-VDzbQiQL.jpg)**YUASA Battery NP4-12 General Purpose VRLA 12V 4AH Battery Lead Calcium Grids for Superior Life Absorbed Glass Mat Construction with No Free Acid Gas Recombination** Yuasa**$25.51**4.6★1,310 reviews](https://www.amazon.com/dp/B004J2TR1I) [![EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector](https://m.media-amazon.com/images/I/41e+ejSwa4L.jpg)**EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector** Enersys**$25.62**4.7★1,939 reviews](https://www.amazon.com/dp/B000LDIJ72) [![Casil CA1240 12V 4Ah SLA/AGM Sealed Lead-Acid Maintenance-Free Alarm Battery F1 Terminals](https://m.media-amazon.com/images/I/41HZSygzytL.jpg)**Casil CA1240 12V 4Ah SLA/AGM Sealed Lead-Acid Maintenance-Free Alarm Battery F1 Terminals** Casil**$21.89**4.6★6,374 reviews](https://www.amazon.com/dp/B004QC8WZI) [![UPLUS LP12-4.0 12V 4AH Rechargeable SLA AGM Battery with F1/F2 terminals Replacement Batteries for Alarm Security Control Panel Garage Door Opener Ion Block Rockers UPS Ride On Truck etc.](https://m.media-amazon.com/images/I/41GgZeBSOeL.jpg)**UPLUS LP12-4.0 12V 4AH Rechargeable SLA AGM Battery with F1/F2 terminals Replacement Batteries for Alarm Security Control Panel Garage Door Opener Ion Block Rockers UPS Ride On Truck etc.** UPLUS NEW TECHNOLOGY BATTERY**$18.89**4.6★2,684 reviews](https://www.amazon.com/dp/B09V4GVNYQ) [![EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector (2 Pack)](https://m.media-amazon.com/images/I/41JtvAAU74L.jpg)**EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector (2 Pack)** Enersys**$42.68**4.7★78 reviews](https://www.amazon.com/dp/B00V57JC74) [![Mighty Max Battery ML5-12 - 12 Volt 5 AH F1 Terminal Rechargeable SLA AGM Battery](https://m.media-amazon.com/images/I/41L69i-K-SL.jpg)**Mighty Max Battery ML5-12 - 12 Volt 5 AH F1 Terminal Rechargeable SLA AGM Battery** Mighty Max Battery**$17.53**4.6★10,459 reviews](https://www.amazon.com/dp/B079ZCJYP3) [![NP4-12FR 12 Volt 5 AmpH SLA Replacement Battery with F1 Terminal](https://m.media-amazon.com/images/I/31nbPAYd0dL.jpg)**NP4-12FR 12 Volt 5 AmpH SLA Replacement Battery with F1 Terminal** SigmasTek**$17.53**4.6★22 reviews](https://www.amazon.com/dp/B00ARAMP4W) [![Casil CA1250 12V 5Ah SLA AGM Alarm Battery Rechargeable Sealed Lead Acid Upgrade Replacement for CA1240 12V 4Ah ADT Security Systems UPS Backup Power](https://m.media-amazon.com/images/I/41cu84hH6ML.jpg)**Casil CA1250 12V 5Ah SLA AGM Alarm Battery Rechargeable Sealed Lead Acid Upgrade Replacement for CA1240 12V 4Ah ADT Security Systems UPS Backup Power** Casil**$20.44**4.7★214 reviews](https://www.amazon.com/dp/B07Q413L1T) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Battery Life**33% *“Good battery”* **Size-Overall**15% *“Fit perfect”* **Value For Money**13% *“The price was very reasonable”* **Advertised Vs Actual Product**9% *“Works as advertised”* **Assembly/Installation**7% *“Easy install”* **Quality-Overall**5% *“For general replacement quality”* **Compatibility-Overall**2% *“Compatibility is pretty good”* **Charging**2% *“Holds good charge”* **Ease Of Use**2% *“easy”* **Strength**1% *“✔ Strong, steady power”* ### **What buyers complain about ** **Battery Life**45% *“Short battery life”* **Durability**13% *“the last one only lasted 7 months”* **Quality-Overall**7% *“The build quality also feels cheap”* **Size-Overall**6% *“Doesn't fit the ion game day speaker”* **Charging**5% *“it barely holds a charge”* **Advertised Vs Actual Product**4% *“Not agm. This not an agm”* **Functionality-Overall**3% *“Did not work for me”* **Product Condition**3% *“appeared to be used”* **Compatibility-Overall**2% *“The only downside — and the reason for the lower rating — is compatibility”* **Value For Money**1% *“they were kind of expensive”* #### **Top return reasons**- Size-Overall33% - Functionality-Overall12% - Compatibility-Overall12% - Battery Life9% - Charging9% - Advertised Vs Actual Product6% - Value For Money5% - Defective Material/Parts4% - Connectivity-Overall4% - Product Condition2%