Is capacitor tester profitable to sell on Amazon United States?

The niche generates $254K/yr across 25 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +44.9%. Flapen's verdict: Worth a look (56/100).

How competitive is the capacitor tester niche?

14 brands and 71 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 74% of demand.

What do buyers complain about in capacitor tester?

Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Durability. The return rate is 3.0%.

When does demand for capacitor tester peak?

Demand peaks in Jun–Jul–Aug; the busiest month runs 2.0× the quietest.

What does it cost to enter the capacitor tester niche?

Listings span $14.24–$110.01; the average listing price is $38.36 (sweet spot $15–$100). The average incumbent carries 4,455 reviews — the moat a new listing must climb.

capacitor tester

Worth a look

Shows a sweet-spot price point ($38.36 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Avg price

Incredible$38.36

avg listing price — sweet spot $15–$100

Price range

Great$14.24–$110.01

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+44.9%

90-day search growth — must beat 0% to launch

Competition

Good50%

top-5 click share — leaders hold, buyers still browse

Brand share

Good74%

top-5 brand share — brands hold most of the demand

Conversion

Good4.2%

search→purchase rate — share of searches ending in a sale

Returns

Good3.0%

return rate — above 5% kills the launch gate

Market size

Okay$254K

$254K/yr · 159K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Bad4,455.08

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, capacitor tester is a $254K/yr Amazon United States market (159K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 56/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

capacitor tester market data

Units sold / yr: 6K–8K; avg 100–250/product
Revenue / yr: $230K–$307K; units × avg price
Conversion rate: 4.2%
Avg BSR: #30
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 6.1%
Avg brand age: 57 months
Avg seller age: 157 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 rising

Sellers

Top-5 brand share

74%

Top 20: 100%

Top-5 click share

50%

Top 20: 93%

Open market

21%

Luo ke29%
AstroAI27%
FNIRSI6%
GOLDCHAMP6%
oiuebxe5%
Yachuang5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +44.9% search growth over the last 90 days.

Peak months: Jun, Jul, Aug · busiest ÷ quietest = 2.0×

Open Trend

Top capacitor tester search terms

capacitor tester93K/yr +47.4%3.8% conv.
microfarad meter12K/yr +127.2%2.1% conv.
capacitance meters11K/yr +54.5%1.7% conv.
capacitance meter14K/yr +14.3%3.4% conv.
capacitor tester meter7K/yr -2.3%4.7% conv.
capacitance tester3K/yr +50.9%3.7% conv.
capacitor meter4K/yr +18.9%2.7% conv.
hvac capacitor tester3K/yr +101.3%2.7% conv.
astroai 60004K/yr -23.6%8.1% conv.
astroai dm6000ar3K/yr +12.2%7.9% conv.

All search terms

Top capacitor 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.

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

Honeytek A6013L Capacitor Tester

Luo ke$21.904.4★1,485 rev

AstroAI Digital Multimeter and Analyzer TRMS 6000 Counts Volt Meter Ohmmeter Auto-Ranging Tester; Accurately Measures Voltage Current Resistance Diodes Continuity Duty-Cycle Capacitance Temperature

AstroAI$30.684.6★20,011 rev

AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage AC Current Resistance Capacitance Continuity Live Wire Test NCV Blue

AstroAI$22.754.6★9,070 rev

CapMaster 470F Digital Capacitor Tester with ESR Estimation 0.01pF470F Capacitance Meter for HVAC & Appliance Repair 1%12% Accuracy Auto Range

oiuebxe$55.754.5★14 rev

Honeytek A6013L Capacitance Meter Capacitor Electronic Measuring Capacitance Tester

Yachuang$21.224.5★376 rev

Newest

by launch date

CapMaster 470F Digital Capacitor Tester with ESR Estimation 0.01pF470F Capacitance Meter for HVAC & Appliance Repair 1%12% Accuracy Auto Range

oiuebxe$55.7514 rev

6mo ago

Nurfosttek MFD10 Digital Capacitor Tester 0.001-9999 F Range 5% Accuracy

Nurfosttek$62.3813 rev

6mo ago

MFD10 Capacitor Tester Digital Capacitance Meter with LED Display 0.001F to 9999F Range 5% Accuracy for HVAC Appliance Motor Start/Run Capacitor Testing (Black)

BBAYYAO$61.237 rev

7mo ago

FNIRSI LC1020E 100kHz LCR Meter 19 999 Counts Resistor Inductor Capacitor Tester Auto Component Detect Measures ESR/Q/D//X 2.8 Color TFT Dual Parameter Display Sorting & Open/Short Calibration

FNIRSI$71.78238 rev

11mo ago

MFD10 Digital Capacitor Tester with LED Display 0.001-9999F 5% Accuracy

FRIGESWIFT$62.6717 rev

1y ago

What buyers say about capacitor tester

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

What buyers love

Value For Money27%

“Great deal”

Quality-Overall16%

“has a high quality build”

Ease Of Use13%

“Easy to Use”

Advertised Vs Actual Product12%

“As advertised”

Efficiency8%

“WORKS ON WHAT I USE”

Measurement/Reading Accuracy3%

“setting and it seems relatively accurate”

Durability2%

“Seems durable”

Strength2%

“Solid construction, performs as advertised”

Functionality-Overall2%

“Works well so far”

Design-Overall2%

“I like the compact design”

What buyers complain about

Functionality-Overall15%

“Didnt work”

Quality-Overall11%

“No quality control”

Durability11%

“Broken”

Measurement/Reading Accuracy9%

“also because after just a couple of uses it fails to deliver consistent readings”

Battery Life5%

“Doesnt do a good battery voltage”

Instructions/User Manual/Troubleshooting4%

“they can't afford to provide readable instructions”

Value For Money4%

“Priced Descent”

Size-Overall4%

“They are way too short to be effective at much of anything”

Defective Material/Parts2%

“defective”

Advertised Vs Actual Product2%

“the listing is not totally accurate”

Top return reasons

Functionality-Overall32%

Measurement/Reading Accuracy12%

Advertised Vs Actual Product11%

Value For Money8%

Compatibility-Overall6%

Size-Overall5%

Defective Material/Parts4%