---
title: "Split Charge Relay Kit — £62K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/automotive/split-charge-relay-kit"
last_updated: "2026-08-09T10:40:15.436Z"
locale: en
meta:
description: "Niche score 47/100 · £62K/yr market · 36K searches/yr · £37.43 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · £62K/yr market · 36K searches/yr · £37.43 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Split Charge Relay Kit — £62K/yr Amazon UK Niche (2026) - Flapen"
---
# **split charge relay kit**
**Skip it**
A small market ($62K/yr) — this niche doesn't clear our bar today.
Market size 16Growth 20Conversion 55Competition 23Returns 78Price range 95Avg price 95Brand share 41Review moat 93Quality gap 62
**Avg price**
**Incredible****£37.43**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****£16.68–£69.97**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****141.62**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Great****1.9%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****4.7%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****80%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****72%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-10.4%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£62K**
£62K/yr · 36K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, split charge relay kit is a £62K/yr Amazon United Kingdom market (36K searches/yr). The top 5 brands hold 80% of demand. Verdict: Skip it — 47/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **split charge relay kit market data**
- **Units sold / yr**
- **1K–2K**
- avg 100–250/product
- **Revenue / yr**
- **£47K–£56K**
- units × avg price
- **Conversion rate**
- **4.7%**
- **Avg BSR**
- **#132**
- **Page quality**
- **0%**
- **Prime**
- **85%**
- **Sponsored**
- **92%**
- **Out of stock**
- **23.1%**
- **Avg brand age**
- **51 months**
- **Avg seller age**
- **210 days**
## **Competition & brand share**
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**15**
**Top-5 brand share**
**80%**
Top 20: 100%
**Top-5 click share**
**72%**
Top 20: 100%
**Open market**
**16%**
- CHAMSUREUK46% - Heart Horse14% - BURNTOP11% - CISSIYOG5% - JAOGAUS4% - Joinfworld4% - Open — no brand owns it (5 brands, 16%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -10.4% search growth over the last 90 days.
2K1KSpike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/automotive/split-charge-relay-kit/trend)
## **Top split charge relay kit search terms**
- **split charge relay kit**25K/yr-12.3%4.2% conv. - **split charger for leisure battery kit**6K/yr-18.7%3.1% conv. - **leisure battery kit**4K/yr+18.1%0.7% conv. [**All search terms **](https://flapen.com/research/uk/automotive/split-charge-relay-kit/search-terms)
## **Top split charge relay kit 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%15%£9K30%£19K45%£28K60%£37K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**5M 12V 140 Amp Split Charge Relay Kit Voltage Sensitive Relay Kit with LED Screen Display VSR Smart Dual Battery Isolator Battery Automatic Disconnect Switch for Campervan SUV ATV RV Boat Vehicles**CHAMSUREUK**£42.77**4.2★117 rev](https://www.amazon.co.uk/dp/B0DG5KJXGB) [2**5M 12V 140 Amp Split Charge Relay Kit VSR Smart Dual Battery Isolator Battery Automatic Disconnect Switch Voltage Sensitive Relay Kit with LED Screen Display for Campervan SUV ATV RV Boat Vehicles**BURNTOP**£41.94**4.2★49 rev](https://www.amazon.co.uk/dp/B0DFPJZ47N) [3**Heart Horse 3m Split Charge Relay Kit 12V 140Amp Smart Dual Battery Isolator Kit Manual/Auto Modes VSR-Voltage Sensitive Relay Kit with LED Screen Voltage Display for Truck SUV RV ATV UTV Boat**Heart Horse**£32.89**4.4★504 rev](https://www.amazon.co.uk/dp/B0CF8F7B6N) [4**12V 140 Amp Split Charge Relay VSR Smart Dual Battery Isolator Automatic Disconnect Switch Voltage Sensitive Relay Kit with LED Screen Display for Campervan Van Truck SUV RV ATV UTV Boat**CHAMSUREUK**£16.68**4.4★80 rev](https://www.amazon.co.uk/dp/B0DQXMYW7V) [5**Split Charge Relay Kit Dual Battery Isolator Kit 12V 140Amp Voltage Sensitive Relay Ror Car Caravan Off-road Truck SUV RV ATV UTV Boat**CISSIYOG**£28.08**4.4★91 rev](https://www.amazon.co.uk/dp/B0CNT6MZ9R)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Split Charge Relay Kit Smart Dual Battery Isolator Kit 12V 140Amp Voltage Sensitive Relay kit for Car Caravan Off-road Truck SUV RV ATV UTV Boat**NORLYT**£33.28**1 rev4mo ago](https://www.amazon.co.uk/dp/B0GPN6MBP4) [**12V Split Charge Relay Kit 5M 140 Amp Smart Dual Battery Isolator Kit with Led Voltmeter Manual/Auto Mode Waterproof Voltage Sensitive Relay VSR Kit for Truck ATV UTV Boat RV**Yeqqzq**£36.56**2 rev7mo ago](https://www.amazon.co.uk/dp/B0G5Y5VGHF) [**Joinfworld 3M 140 Amp 12V Split Charge Relay Kit with Led Voltmeter Manual/Auto Mode Waterproof Voltage Sensitive Relay Smart Dual Battery Isolator for Marine Truck ATV UTV RV Boat Vehicles**Joinfworld**£33.97**0 rev7mo ago](https://www.amazon.co.uk/dp/B0G3WRMDLP) [**3m Split Charge Relay Kit 12v 140amp Leisure Battery Kit Voltage Sensitive Relay VSR Smart Dual Battery Isolator Kit for camper auto van**UCkasayfy**£36.04**108 rev1y ago](https://www.amazon.co.uk/dp/B0DLWCQZXS) [**12V 140 Amp Split Charge Relay VSR Smart Dual Battery Isolator Automatic Disconnect Switch Voltage Sensitive Relay Kit with LED Screen Display for Campervan Van Truck SUV RV ATV UTV Boat**CHAMSUREUK**£16.68**80 rev1y ago](https://www.amazon.co.uk/dp/B0DQXMYW7V)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Joinfworld 3M 140 Amp 12V Split Charge Relay Kit with Led Voltmeter Manual/Auto Mode Waterproof Voltage Sensitive Relay Smart Dual Battery Isolator for Marine Truck ATV UTV RV Boat Vehicles**Joinfworld**£33.97**0.0★**▲ 244%**](https://www.amazon.co.uk/dp/B0G3WRMDLP) [**Split Charge Relay Kit Smart Dual Battery Isolator Kit 12V 140Amp Voltage Sensitive Relay kit for Car Caravan Off-road Truck SUV RV ATV UTV Boat**NORLYT**£33.28**3.0★**▲ 137%**](https://www.amazon.co.uk/dp/B0GPN6MBP4) [**12V Split Charge Relay Kit 5M 140 Amp Smart Dual Battery Isolator Kit with Led Voltmeter Manual/Auto Mode Waterproof Voltage Sensitive Relay VSR Kit for Truck ATV UTV Boat RV**Yeqqzq**£36.56**5.0★**▲ 106%**](https://www.amazon.co.uk/dp/B0G5Y5VGHF) [**12V 140amp Durite 0-727-33 voltage sensitive/intelligent Split Charge Relay**WITPOCE**£43.33**4.6★**▲ 27%**](https://www.amazon.co.uk/dp/B00N8P975S) [**Heart Horse 3m Split Charge Relay Kit 12V 140Amp Smart Dual Battery Isolator Kit Manual/Auto Modes VSR-Voltage Sensitive Relay Kit with LED Screen Voltage Display for Truck SUV RV ATV UTV Boat**Heart Horse**£32.89**4.4★**▲ 26%**](https://www.amazon.co.uk/dp/B0CF8F7B6N)
**~~View all trending →~~**
## **What buyers say about split charge relay kit**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**24%
*“Value for money”*
**Quality-Overall**22%
*“Good quality”*
**Advertised Vs Actual Product**13%
*“Works as expected”*
**Efficiency**9%
*“Works perfect”*
**Ease Of Use**8%
*“was easy to use”*
**Charging**7%
*“Good slipt charge unit easy fitted too”*
**Size-Overall**7%
*“Easy fit”*
**Instructions/User Manual/Troubleshooting**4%
*“Came with instructions”*
**Battery Life**4%
*“Charges the second battery properly”*
**Durability**2%
*“Ten years now,no issues”*
### **What buyers complain about **
**Charging**17%
*“its not turning on when charging”*
**Quality-Overall**11%
*“Very poor”*
**Assembly/Installation**11%
*“Had a bit of time to get the wiring set up. still needs to be tidied”*
**Value For Money**11%
*“they cost minimum £10 extra”*
**Size-Overall**11%
*“Not fit for purpose”*
**Battery Life**11%
*“drained my starter battery”*
**Advertised Vs Actual Product**6%
*“Description says kit. however it is only the box. no wires or screws”*
**Functionality-Overall**6%
*“Didn't work”*
**Mounting**6%
*“no wires or screws”*
**Display-Overall**6%
*“Didn't work display wouldent even light up”*
### **Top return reasons **
**Functionality-Overall**24%
**Compatibility-Overall**18%
**Defective Material/Parts**10%
**Size-Overall**10%
**Quality-Overall**6%
**Battery Life**5%
**Assembly/Installation**4%
**Heating**4%
**Smell**4%
**Advertised Vs Actual Product**4%
## **Common questions**
- **Is split charge relay kit profitable to sell on Amazon United Kingdom?**
- The niche generates £62K/yr across 13 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -10.4%. Flapen's verdict: Skip it (47/100).
- **How competitive is the split charge relay kit niche?**
- 11 brands and 15 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 80% of demand.
- **What do buyers complain about in split charge relay kit?**
- Top complaints mined from reviews: Charging, Quality-Overall, Assembly/Installation. The return rate is 1.9%.
- **When does demand for split charge relay kit peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the split charge relay kit niche?**
- Listings span £16.68–£69.97; the average listing price is £37.43 (sweet spot $15–$100). The average incumbent carries 142 reviews — the moat a new listing must climb.
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