---
title: "mercedes auxiliary battery — Niche Verdict: Skip it (44/100) | Amazon United States - Flapen"
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last_updated: "2026-07-10T01:50:08.008Z"
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  description: "a small market ($66K/yr) — mercedes auxiliary battery doesn't clear our bar today."
  "og:description": "a small market ($66K/yr) — mercedes auxiliary battery doesn't clear our bar today."
  "og:title": "mercedes auxiliary battery — Niche Verdict: Skip it (44/100) | Amazon United States - Flapen"
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# **mercedes auxiliary battery**

**Skip it****44/100 **

a small market ($66K/yr) — mercedes auxiliary battery doesn't clear our bar today.

**Market/yr**

**$66K**

**Growth (1y)**

**+241.5%**

**Products**

**13**

**Brands**

**10**

was 15 a year ago

**Sellers**

**27**

**Price range**

**$15.35–$104.64**

**Returns**

**4.0%**

**Rating**

**4.3★**

**Skip it**

Scored 44/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns

Market size

**3**

 ×0.30

Growth

**81**

 ×0.30

Competition

**32**

 ×0.20

Quality gap

**57**

 ×0.10

Returns

**68**

 ×0.10

## **Demand**

Weekly Amazon search volume, last 27 weeks — +241.5% year over year.

1K648Jan '26Feb '26Mar '26Mar '26Apr '26May '26Jun '26

## **Competition**

- Genuine33% - Casil16% - Upstart Battery14% - letoom7% - winbasic7% - Mercedes Benz6% - Other (4 brands)17%

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them. 10 brands and 27 sellers compete here.

**Brands**

**10 **▼falling

was 15 a year ago

**Sellers**

**27**

**Top 5 brand share**

**76%**

#ProductBrandPriceRatingReviewsClick shareTrend

1
![2007-2023 Mercedes-Benz (000000-004039) Sealed Lead-Acid Auxiliary Battery/Not a Starter Battery](https://m.media-amazon.com/images/I/41tXR4a1FYL.jpg) [**2007-2023 Mercedes-Benz (000000-004039) Sealed Lead-Acid Auxiliary Battery/Not a Starter Battery**](https://www.amazon.com/dp/B007XRBCAK)

Genuine$47.424.4★1,50533%—flat

2
![YTX14-BS 2115410001 Replacement for Mercedes Benz Auxiliary Battery - 12V 12AH Secondary Backup Aux Battery for E350 CLA 250 GLK 350 E320 ML350 E500 CLS 400 GLA 250](https://m.media-amazon.com/images/I/41gvSNmDZiL.jpg) [**YTX14-BS 2115410001 Replacement for Mercedes Benz Auxiliary Battery - 12V 12AH Secondary Backup Aux Battery for E350 CLA 250 GLK 350 E320 ML350 E500 CLS 400 GLA 250**](https://www.amazon.com/dp/B0DXXP7142)

Upstart Battery$36.623.8★7214%▲rising

3
![Casil 12V 1.2Ah SLA AGM Battery Rechargeable Auxiliary Power Compatible with Mercedes-Benz N000000004039](https://m.media-amazon.com/images/I/41XZlzTq9dL.jpg) [**Casil 12V 1.2Ah SLA AGM Battery Rechargeable Auxiliary Power Compatible with Mercedes-Benz N000000004039**](https://www.amazon.com/dp/B07TD9LKTH)

Casil$15.354.4★2248%▲rising

4
![letoom 12v 1.2ah Batteries Compatible with Mercedes-Benz Auxiliary Battery 2007-2023 oe n0000004039](https://m.media-amazon.com/images/I/41o9Ret7uXL.jpg) [**letoom 12v 1.2ah Batteries Compatible with Mercedes-Benz Auxiliary Battery 2007-2023 oe n0000004039**](https://www.amazon.com/dp/B0F29DR9X7)

letoom$38.184.4★227%—flat

5
![12v 1.2ah Battery Compatible with Mercedes-Benz AuxiliaryBattery(2007-2023) OE N000000004039](https://m.media-amazon.com/images/I/419O+rd7s0L.jpg) [**12v 1.2ah Battery Compatible with Mercedes-Benz AuxiliaryBattery(2007-2023) OE N000000004039**](https://www.amazon.com/dp/B0F2H7T5Y9)

winbasic$38.494.1★417%—flat

6
![2007-2012 Mercedes-Benz GL450 GL550 Auxillary Back Up Battery 000000004039 OEM For Passenger Car](https://m.media-amazon.com/images/I/31qiYqV-lmL.jpg) [**2007-2012 Mercedes-Benz GL450 GL550 Auxillary Back Up Battery 000000004039 OEM For Passenger Car**](https://www.amazon.com/dp/B06Y2NDM2F)

Mercedes Benz$53.894.6★6166%▼falling

7
![Weize AUX14 AGM Auxiliary Battery 36 Months Warranty 200CCA BCI Group 400 Battery](https://m.media-amazon.com/images/I/41zU2fxyIgL.jpg) [**Weize AUX14 AGM Auxiliary Battery 36 Months Warranty 200CCA BCI Group 400 Battery**](https://www.amazon.com/dp/B0DRYSFQ6T)

WEIZE$93.204.4★4,7345%▼falling

8
![Casil 12V 1.2Ah Replacement Battery Compatible with Emergency Exit Sign Voy Electric Scooter Mercedes Benz N000000004039 Data Shield 1200 1009 Gold Medal SNO-Konette Ice Shaver Alexander LCR12V1.3P](https://m.media-amazon.com/images/I/41UnEYrwFDL.jpg) [**Casil 12V 1.2Ah Replacement Battery Compatible with Emergency Exit Sign Voy Electric Scooter Mercedes Benz N000000004039 Data Shield 1200 1009 Gold Medal SNO-Konette Ice Shaver Alexander LCR12V1.3P**](https://www.amazon.com/dp/B07N7NR5Y8)

Casil$17.324.6★654%▼falling

9
![ACDelco Gold AUX14-200 (88866185) 36 Month Warranty Auxiliary AGM 200 CCA Battery](https://m.media-amazon.com/images/I/51LR0ek3XYL.jpg) [**ACDelco Gold AUX14-200 (88866185) 36 Month Warranty Auxiliary AGM 200 CCA Battery**](https://www.amazon.com/dp/B08W5HH5FD)

ACDelco$104.644.3★7984%▼falling

10

![YTX14-BS AGM Battery Replacement for Mercedes Auxiliary Backup Battery 2115410001 12V Maintenance-Free Sealed Powersports Motorcycle ATV Generator Battery ETX14 TX14 Compatible](https://m.media-amazon.com/images/I/31THpemi0LL.jpg) [**YTX14-BS AGM Battery Replacement for Mercedes Auxiliary Backup Battery 2115410001 12V Maintenance-Free Sealed Powersports Motorcycle ATV Generator Battery ETX14 TX14 Compatible**](https://www.amazon.com/dp/B0945DJCVD)

Casil$43.083.7★93%▲rising

11

![BINB ROAD Voltage Converter Module Auxiliary Battery Compatible with Mercedes-Benz AMG C300 GLE350 GLS450 S560 G550 | C43 C63 (Replaces 2059053414)](https://m.media-amazon.com/images/I/412wh2eKcRL.jpg) [**BINB ROAD Voltage Converter Module Auxiliary Battery Compatible with Mercedes-Benz AMG C300 GLE350 GLS450 S560 G550 | C43 C63 (Replaces 2059053414)**](https://www.amazon.com/dp/B0BLJNK6XR)

BINB ROAD$33.464.6★433%—flat

12

![UPLUS AUX4039 Auxiliary Battery For Mercedes-Benz 2007-2023 000000-004039](https://m.media-amazon.com/images/I/41Z4VmBA03L.jpg) [**UPLUS AUX4039 Auxiliary Battery For Mercedes-Benz 2007-2023 000000-004039**](https://www.amazon.com/dp/B0G8FLJHWT)

UPLUS NEW TECHNOLOGY BATTERY$22.804.5★1,0903%▲rising

13

![UPLUS Auxiliary Battery AUX14-UP 12V 14Ah 200 CCA AGM Maintenance Free Rechargeable SLA Backup Batteries replace for AUX14 AUX12 BCI Group 400](https://m.media-amazon.com/images/I/417PK0N3VKL.jpg) [**UPLUS Auxiliary Battery AUX14-UP 12V 14Ah 200 CCA AGM Maintenance Free Rechargeable SLA Backup Batteries replace for AUX14 AUX12 BCI Group 400**](https://www.amazon.com/dp/B0G8F6VM28)

UPLUS NEW TECHNOLOGY BATTERY$78.984.5★1,0902%▲rising

## **Product shelf**

All 13 tracked products in this niche.

Top sellersNewestTrending

[![2007-2023 Mercedes-Benz (000000-004039) Sealed Lead-Acid Auxiliary Battery/Not a Starter Battery](https://m.media-amazon.com/images/I/41tXR4a1FYL.jpg)**2007-2023 Mercedes-Benz (000000-004039) Sealed Lead-Acid Auxiliary Battery/Not a Starter Battery** Genuine**$47.42**4.4★1,505 reviews](https://www.amazon.com/dp/B007XRBCAK) [![YTX14-BS 2115410001 Replacement for Mercedes Benz Auxiliary Battery - 12V 12AH Secondary Backup Aux Battery for E350 CLA 250 GLK 350 E320 ML350 E500 CLS 400 GLA 250](https://m.media-amazon.com/images/I/41gvSNmDZiL.jpg)**YTX14-BS 2115410001 Replacement for Mercedes Benz Auxiliary Battery - 12V 12AH Secondary Backup Aux Battery for E350 CLA 250 GLK 350 E320 ML350 E500 CLS 400 GLA 250** Upstart Battery**$36.62**3.8★72 reviews](https://www.amazon.com/dp/B0DXXP7142) [![Casil 12V 1.2Ah SLA AGM Battery Rechargeable Auxiliary Power Compatible with Mercedes-Benz N000000004039](https://m.media-amazon.com/images/I/41XZlzTq9dL.jpg)**Casil 12V 1.2Ah SLA AGM Battery Rechargeable Auxiliary Power Compatible with Mercedes-Benz N000000004039** Casil**$15.35**4.4★224 reviews](https://www.amazon.com/dp/B07TD9LKTH) [![letoom 12v 1.2ah Batteries Compatible with Mercedes-Benz Auxiliary Battery 2007-2023 oe n0000004039](https://m.media-amazon.com/images/I/41o9Ret7uXL.jpg)**letoom 12v 1.2ah Batteries Compatible with Mercedes-Benz Auxiliary Battery 2007-2023 oe n0000004039** letoom**$38.18**4.4★22 reviews](https://www.amazon.com/dp/B0F29DR9X7) [![12v 1.2ah Battery Compatible with Mercedes-Benz AuxiliaryBattery(2007-2023) OE N000000004039](https://m.media-amazon.com/images/I/419O+rd7s0L.jpg)**12v 1.2ah Battery Compatible with Mercedes-Benz AuxiliaryBattery(2007-2023) OE N000000004039** winbasic**$38.49**4.1★41 reviews](https://www.amazon.com/dp/B0F2H7T5Y9) [![2007-2012 Mercedes-Benz GL450 GL550 Auxillary Back Up Battery 000000004039 OEM For Passenger Car](https://m.media-amazon.com/images/I/31qiYqV-lmL.jpg)**2007-2012 Mercedes-Benz GL450 GL550 Auxillary Back Up Battery 000000004039 OEM For Passenger Car** Mercedes Benz**$53.89**4.6★616 reviews](https://www.amazon.com/dp/B06Y2NDM2F) [![Weize AUX14 AGM Auxiliary Battery 36 Months Warranty 200CCA BCI Group 400 Battery](https://m.media-amazon.com/images/I/41zU2fxyIgL.jpg)**Weize AUX14 AGM Auxiliary Battery 36 Months Warranty 200CCA BCI Group 400 Battery** WEIZE**$93.20**4.4★4,734 reviews](https://www.amazon.com/dp/B0DRYSFQ6T) [![Casil 12V 1.2Ah Replacement Battery Compatible with Emergency Exit Sign Voy Electric Scooter Mercedes Benz N000000004039 Data Shield 1200 1009 Gold Medal SNO-Konette Ice Shaver Alexander LCR12V1.3P](https://m.media-amazon.com/images/I/41UnEYrwFDL.jpg)**Casil 12V 1.2Ah Replacement Battery Compatible with Emergency Exit Sign Voy Electric Scooter Mercedes Benz N000000004039 Data Shield 1200 1009 Gold Medal SNO-Konette Ice Shaver Alexander LCR12V1.3P** Casil**$17.32**4.6★65 reviews](https://www.amazon.com/dp/B07N7NR5Y8)

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Size-Overall**22%

*“Fit just like came from dealership”*

**Battery Life**22%

*“This battery is an incredible savings over dealer installed batteries”*

**Value For Money**17%

*“Great product and value for the money”*

**Quality-Overall**8%

*“Good Quality”*

**Advertised Vs Actual Product**7%

*“better then I was expecting”*

**Assembly/Installation**7%

*“Price and easy to assemble”*

**Efficiency**5%

*“Working very well”*

**Durability**4%

*“Hopefully its lasts for 3 years”*

**Functionality-Overall**2%

*“Works like it should at a fraction of price 2010 e500 mercedes”*

**Charging**1%

*“Came properly charged”*

### **What buyers complain about **

**Battery Life**21%

*“the battery died”*

**Size-Overall**16%

*“to small”*

**Durability**16%

*“Then dead”*

**Compatibility-Overall**13%

*“Incompatible with 2014 SL550 even though it is the same group number”*

**Functionality-Overall**6%

*“did not work”*

**Advertised Vs Actual Product**6%

*“Absolutely deceptive”*

**Charging**4%

*“Won't hold a charge”*

**Quality-Overall**3%

*“Not good quality product”*

**Value For Money**3%

*“cheap price,”*

**Assembly/Installation**2%

*“After the installation the error message went away”*

#### **Top return reasons**- Size-Overall31% - Compatibility-Overall31% - Functionality-Overall8% - Advertised Vs Actual Product6% - Defective Material/Parts5% - Value For Money4% - Battery Life3% - Charging3% - Assembly/Installation2% - Socket/Port/Plug2%