---
title: "Power Supply Tester — $127K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/electronics/power-supply-tester"
last_updated: "2026-08-05T21:19:21.415Z"
locale: en
meta:
description: "Niche score 39/100 · $127K/yr market · 80K searches/yr · $17.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $127K/yr market · 80K searches/yr · $17.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Power Supply Tester — $127K/yr Amazon US Niche (2026) - Flapen"
---
# **power supply tester**
**Skip it**
A concentrated shelf (top 5 take 89% of clicks) — this niche doesn't clear our bar today.
Market size 29Growth 18Conversion 84Competition 9Returns 43Price range 83Avg price 81Brand share 26Review moat 79Quality gap 37
**Conversion**
**Great****9.2%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$10.02–$43.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$17.31**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****422.88**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****3.5%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$127K**
$127K/yr · 80K searches
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-13.7%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****89%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, power supply tester is a $127K/yr Amazon United States market (80K searches/yr). The top 5 brands hold 89% of demand. Verdict: Skip it — 39/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **power supply tester market data**
- **Units sold / yr**
- **6K–8K**
- avg 750–1,000/product
- **Revenue / yr**
- **$104K–$138K**
- units × avg price
- **Conversion rate**
- **9.2%**
- **Avg BSR**
- **#227**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **63%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **45 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **—flat
**Sellers**
**34**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**89%**
Top 20: 100%
**Open market**
**6%**
- Fuhengli38% - Thermaltake19% - Kingwin15% - ASHATA9% - Comidox8% - Cunyuer5% - Open — no brand owns it (2 brands, 6%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -13.7% search growth over the last 90 days.
2K1KHoliday '24Prime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/electronics/power-supply-tester/trend)
## **Top power supply tester search terms**
- **power supply tester**32K/yr-12.8%7.9% conv. - **psu tester**27K/yr-10.8%10.0% conv. - **pc power supply tester**7K/yr-21.2%9.7% conv. - **computer power supply tester**6K/yr-24.1%7.5% conv. - **atx power supply tester**4K/yr+2.9%10.3% conv. - **psu tester pc**3K/yr-28.1%11.8% conv. [**All search terms **](https://flapen.com/research/us/electronics/power-supply-tester/search-terms)
## **Top power supply tester 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%$13K20%$25K30%$38K40%$51K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Computer PC Power Supply Tester ATX/ITX/IDE/HDD/SATA/BYI Connectors Power Supply Tester 1.8 LCD Screen (Aluminum Alloy Enclosure)**Fuhengli**$16.04**4.5★1,860 rev](https://www.amazon.com/dp/B076CLNPPK) [2**Thermaltake Dr. Power III ATX Power Supply Tester/Support up to ATX12V v3.1 with PCIe 12+4pin Connector/Voltage Output for +12V +5V +3.3V and +5Vsb AC-069-OO1NAN-A1**Thermaltake**$43.10**4.8★179 rev](https://www.amazon.com/dp/B0CZ2YF2FR) [3**Kingwin Digital Power Supply Tester with LCD Screen Compatible with ATX ITX IDE HDD SATA and BTX Easy-to-Use Diagnostic Tool for PC Power Supply Testing (Aluminum)**Kingwin**$16.74**4.6★609 rev](https://www.amazon.com/dp/B07VXSFXP1) [4**Computer PC Power Supply Tester ATX Power Supply Host Inspection Maintenance Tool PSU Tester Detect with 20/24 Pin LCD Display for ATX BTX ITX TFX.**ASHATA**$14.66**4.4★105 rev](https://www.amazon.com/dp/B07WH15LBZ) [5**Comidox 1Pcs 20/24 Pin LCD Computer PC Power Supply Tester for ATX BTX ITX TFX SATA with Buzzer Automatic Alarm**Comidox**$10.05**4.5★477 rev](https://www.amazon.com/dp/B07J9LRC6T)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Cunyuer Computer Power Supply Tester 20/24 Pin Computer PC Power Supply Tester with LCD Display for ATX BTX ITX TFX**Cunyuer**$14.65**5 rev1y ago](https://www.amazon.com/dp/B0DZCBDCQB) [**Thermaltake Dr. Power III ATX Power Supply Tester/Support up to ATX12V v3.1 with PCIe 12+4pin Connector/Voltage Output for +12V +5V +3.3V and +5Vsb AC-069-OO1NAN-A1**Thermaltake**$43.10**179 rev2y ago](https://www.amazon.com/dp/B0CZ2YF2FR) [**PC Power Supply Diagnostic LCD Computer Testing Device Computer 20/24 4/6/8 Pin Supply Tester for SATA IDE HDD ATX ITX Byi Plug**BUBUCAM**$10.02**70 rev2y ago](https://www.amazon.com/dp/B0CNGKCLSV) [**ATX Power Supply Tester 20/24 4/6/8 Pin Computer Host Inspection and Maintenance Tester Tool with Buzzer and LCD Display for ATX ITX BTX PCI E SATA HDD**VBESTLIFE**$13.21**78 rev4y ago](https://www.amazon.com/dp/B0B3LYD78K) [**Computer PC Power Supply Tester ATX Power Supply Host Inspection Maintenance Tool PSU Tester Detect with 20/24 Pin LCD Display for ATX BTX ITX TFX.**ASHATA**$14.66**105 rev6y ago](https://www.amazon.com/dp/B07WH15LBZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ATX Power Supply Tester 20/24 4/6/8 Pin Computer Host Inspection and Maintenance Tester Tool with Buzzer and LCD Display for ATX ITX BTX PCI E SATA HDD**VBESTLIFE**$13.21**4.3★**▲ 94%**](https://www.amazon.com/dp/B0B3LYD78K) [**Cunyuer Computer Power Supply Tester 20/24 Pin Computer PC Power Supply Tester with LCD Display for ATX BTX ITX TFX**Cunyuer**$14.65**4.7★**▲ 89%**](https://www.amazon.com/dp/B0DZCBDCQB) [**Computer PC Power Supply Tester ATX Power Supply Host Inspection Maintenance Tool PSU Tester Detect with 20/24 Pin LCD Display for ATX BTX ITX TFX.**ASHATA**$14.66**4.4★**▲ 51%**](https://www.amazon.com/dp/B07WH15LBZ) [**Thermaltake Dr. Power III ATX Power Supply Tester/Support up to ATX12V v3.1 with PCIe 12+4pin Connector/Voltage Output for +12V +5V +3.3V and +5Vsb AC-069-OO1NAN-A1**Thermaltake**$43.10**4.8★**▲ 12%**](https://www.amazon.com/dp/B0CZ2YF2FR) [**Computer PC Power Supply Tester ATX/ITX/IDE/HDD/SATA/BYI Connectors Power Supply Tester 1.8 LCD Screen (Aluminum Alloy Enclosure)**Fuhengli**$16.04**4.5★**— 6%**](https://www.amazon.com/dp/B076CLNPPK)
**~~View all trending →~~**
## **What buyers say about power supply tester**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**28%
*“Excellent build quality”*
**Ease Of Use**20%
*“very easy to use”*
**Value For Money**20%
*“GreatValue for Peace of Mind”*
**Functionality-Overall**7%
*“This was definitely helpful to check the PSU was working”*
**Advertised Vs Actual Product**6%
*“Does the job”*
**Connectivity-Overall**4%
*“the 24-pin connection tester works fantastic with easy to read LED display”*
**Socket/Port/Plug**4%
*“also ensuring the voltages are in spec on all sorts of connectors”*
**Maintenance And Repair**4%
*“One of the best power testers Ive ever used if you want a repair shop this is a great item to have in your shop the day I bought it I needed to use it to test the power supply”*
**Durability**2%
*“has better durablility”*
**Design-Overall**2%
*“It does what its designed to do”*
### **What buyers complain about **
**Functionality-Overall**15%
*“Not working, burn the PC power supply with first test”*
**Durability**12%
*“Died”*
**Instructions/User Manual/Troubleshooting**12%
*“No instructions”*
**Quality-Overall**8%
*“I know it's not the best”*
**Compatibility-Overall**8%
*“Disappointing because it does not work with all power supplies”*
**Design-Overall**8%
*“Fancy looking doesn't mean functional”*
**Connectivity-Overall**8%
*“Turned out that over time I simply had a connection come a little loose”*
**Defective Material/Parts**8%
*“it definitely would have harmed the component I plugged into it”*
**Socket/Port/Plug**8%
*“It can't plug in all the way”*
**Accuracy-Overall**4%
*“I cannot attest to the accuracy since I have no other way to test power supplies with”*
### **Top return reasons **
**Functionality-Overall**30%
**Compatibility-Overall**12%
**Advertised Vs Actual Product**9%
**Defective Material/Parts**8%
**Value For Money**7%
**Socket/Port/Plug**7%
**Product Condition**7%
**Connectivity-Overall**6%
**Size-Overall**3%
**Instructions/User Manual/Troubleshooting**2%
## **Common questions**
- **Is power supply tester profitable to sell on Amazon United States?**
- The niche generates $127K/yr across 8 tracked products. 90-day search growth is -13.7%. Flapen's verdict: Skip it (39/100).
- **How competitive is the power supply tester niche?**
- 8 brands and 34 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in power supply tester?**
- Top complaints mined from reviews: Functionality-Overall, Durability, Instructions/User Manual/Troubleshooting. The return rate is 3.5%.
- **When does demand for power supply tester peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the power supply tester niche?**
- Listings span $10.02–$43.10; the average listing price is $17.31 (sweet spot $15–$100). The average incumbent carries 423 reviews — the moat a new listing must climb.
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