---
title: "Group 31 Battery — $430K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/group-31-battery"
last_updated: "2026-08-11T09:28:30.598Z"
locale: en
meta:
description: "Niche score 46/100 · $430K/yr market · 288K searches/yr · $253.27 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 46/100 · $430K/yr market · 288K searches/yr · $253.27 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Group 31 Battery — $430K/yr Amazon US Niche (2026) - Flapen"
---
# **group 31 battery**
**Skip it**
Prices mostly outside the sweet spot ($86.68–$520.36) — this niche doesn't clear our bar today.
Market size 57Growth 33Conversion 7Competition 55Returns 69Price range 3Avg price 38Brand share 29Review moat 76Quality gap 76
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Great****485.93**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.3%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$430K**
$430K/yr · 288K searches
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Okay****$253.27**
avg listing price — sweet spot $15–$100
**Growth**
**Okay****+6.4%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Bad****0.6%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Bad****$86.68–$520.36**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, group 31 battery is a $430K/yr Amazon United States market (288K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Jan–Feb–Apr–May–Jun–Dec. Verdict: Skip it — 46/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **group 31 battery market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$380K–$507K**
- units × avg price
- **Conversion rate**
- **0.6%**
- **Avg BSR**
- **#203**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **100%**
- **Out of stock**
- **1.7%**
- **Avg brand age**
- **50 months**
- **Avg seller age**
- **176 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▼falling
**Sellers**
**48**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 87%
**Open market**
**10%**
- Interstate Batteries69% - WEIZE7% - VEMDIA5% - Renogy4% - Mighty Max Battery4% - Litime3% - Open — no brand owns it (7 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 53 weeks — +6.4% search growth over the last 90 days.
6K4KPrime Day '25Spike '25Black Friday '25Holiday '25Spike '26 seasonJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Jan, Feb, Apr, May, Jun, Dec · busiest ÷ quietest = 4.9×
[**Open Trend **](https://flapen.com/research/us/automotive/group-31-battery/trend)
## **Top group 31 battery search terms**
- **interstate battery**57K/yr-9.5%0.2% conv. - **group 31 battery**37K/yr+25.9%0.3% conv. - **interstate deep cycle marine battery**21K/yr+54.0%0.6% conv. - **group 31 lithium battery**17K/yr+27.8%0.3% conv. - **group 31 agm battery**18K/yr+6.7%0.9% conv. - **interstate batteries**23K/yr-15.0%0.2% conv. - **interstate marine battery**14K/yr+29.3%0.6% conv. - **interstate car battery**18K/yr-34.1%0.1% conv. - **interstate group 31 agm battery**7K/yr+44.6%0.7% conv. - **group 31 marine battery**6K/yr+67.4%0.4% conv. [**All search terms **](https://flapen.com/research/us/automotive/group-31-battery/search-terms)
## **Top group 31 battery products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$43K20%$86K30%$129K40%$172K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[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)**Interstate Batteries**$286.15**4.6★55 rev](https://www.amazon.com/dp/B0BHTT7K4J) [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**Interstate Batteries**$280.37**4.1★55 rev](https://www.amazon.com/dp/B0BHX3FBCQ) [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**Interstate Batteries**$256.08**4.6★36 rev](https://www.amazon.com/dp/B0BHTWRDNQ) [4**Interstate Batteries 12V 35AH Sealed Lead Acid (SLA) AGM Deep Cycle Battery (DCM0035) Insert Terminals**Interstate Batteries**$106.29**4.4★1,796 rev](https://www.amazon.com/dp/B005CLPOQM) [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**VEMDIA**$146.73**4.1★33 rev](https://www.amazon.com/dp/B0FP525PFP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**12V 100Ah LiFePO4 Battery Mini size Rechargeable Lithium Batteries with 15000+Deep Cycles Low-Temp Protection 1280Wh 100A BMS Perfect for RV Home Energy Storage Trolling Motors Solar Off-Grid**Balanergy**$138.20**10 rev4mo ago](https://www.amazon.com/dp/B0GRV3D53Y) [**Mighty Max Battery MM-G31M 12V 110Ah Group Size 31M Deep-Cycle Marine AGM Dual-Purpose Starting & Deep Discharge 825 CCA 1000 MCA 240 RC Spill-Proof Maintenance-Free Battery**Mighty Max Battery**$247.71**1,682 rev6mo ago](https://www.amazon.com/dp/B0G7LQ87LG) [**12V 100Ah LiFePO4 Lithium Battery- BCI Group 31 Deep Cycle RV LiFePO4 Battery with Low-Temp Protection 100A BMS 1280Wh Max.15000 Cycles 10-Year Lifespan for RV Solar Trolling Motor Marine**SUPER EMPOWER**$148.20**79 rev9mo ago](https://www.amazon.com/dp/B0FN35WZ68) [**Mighty Max Battery MM-G31 Start and Stop Car BCI Group 31 12V 100AH 140RC 900 CCA Rechargeable AGM Car battery**Mighty Max Battery**$223.52**1,307 rev10mo ago](https://www.amazon.com/dp/B0FPRKYWBF) [**Interstate Batteries Marine/RV Battery 12V 85Ah 975MCA (Group Size 27M) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (27M-AGM) Boats RVs**Interstate Batteries**$411.15**3 rev10mo ago](https://www.amazon.com/dp/B0FPHK2NZW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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★**▲ 210%**](https://www.amazon.com/dp/B0FP525PFP) [**12V 100Ah LiFePO4 Battery Mini size Rechargeable Lithium Batteries with 15000+Deep Cycles Low-Temp Protection 1280Wh 100A BMS Perfect for RV Home Energy Storage Trolling Motors Solar Off-Grid**Balanergy**$138.20**3.6★**▲ 196%**](https://www.amazon.com/dp/B0GRV3D53Y) [**Interstate Batteries Marine/RV Battery 12V 85Ah 975MCA (Group Size 27M) Dual Purpose Power Pure Lead AGM RV & Marine Starting Replacement Battery (27M-AGM) Boats RVs**Interstate Batteries**$411.15**5.0★**▲ 101%**](https://www.amazon.com/dp/B0FPHK2NZW) [**12V 100Ah LiFePO4 Lithium Battery- BCI Group 31 Deep Cycle RV LiFePO4 Battery with Low-Temp Protection 100A BMS 1280Wh Max.15000 Cycles 10-Year Lifespan for RV Solar Trolling Motor Marine**SUPER EMPOWER**$148.20**4.5★**▲ 63%**](https://www.amazon.com/dp/B0FN35WZ68) [**Litime 12V 100Ah Lithium Battery Group 31 LiFePO4 Battery with 100A BMS Up to 15000+ Deep Cycles for RV Travel Trailers Solar Off-Grid and Home Backup**Litime**$248.37**4.6★**▲ 62%**](https://www.amazon.com/dp/B0BJ78JZ2B)
**~~View all trending →~~**
## **What buyers say about group 31 battery**
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-Overall**37%
**Battery Life**13%
**Charging**10%
**Compatibility-Overall**7%
**Functionality-Overall**6%
**Advertised Vs Actual Product**6%
**Defective Material/Parts**6%
**Weight Heavy**4%
**Value For Money**4%
**Assembly/Installation**2%
## **Common questions**
- **Is group 31 battery profitable to sell on Amazon United States?**
- The niche generates $430K/yr across 30 tracked products. 4 of 6 products launched in the last 360 days are still selling. 90-day search growth is +6.4%. Flapen's verdict: Skip it (46/100).
- **How competitive is the group 31 battery niche?**
- 13 brands and 48 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in group 31 battery?**
- Top complaints mined from reviews: Charging, Battery Life, Durability. The return rate is 2.3%.
- **When does demand for group 31 battery peak?**
- Demand peaks in Jan–Feb–Apr–May–Jun–Dec; the busiest month runs 4.9× the quietest.
- **What does it cost to enter the group 31 battery niche?**
- Listings span $86.68–$520.36; the average listing price is $253.27 (sweet spot $15–$100). The average incumbent carries 486 reviews — the moat a new listing must climb.
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