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53

18650 akku

Worth a look

Shows a thin review moat (115 avg reviews), but soft demand (-16.1% this quarter) keeps it on the watch list.

Market size 55Growth 17Conversion 34Competition 60Returns 85Price range 64Avg price 77Brand share 30Review moat 94Quality gap 63

Review moat

Great115.31

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.5%

return rate — above 5% kills the launch gate

Avg price

Great€15.92

avg listing price — sweet spot $15–$100

Price range

Good€9.09–€25.61

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Good49%

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

Market size

Good€385K

€385K/yr · 892K searches

Conversion

Okay2.7%

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

Brand share

Okay87%

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

Growth

Bad-16.1%

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

According to Flapen's Amazon Germany niche tracking, 18650 akku is a €385K/yr Amazon Germany market (892K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Nov. Verdict: Worth a look — 53/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

18650 akku market data

Units sold / yr
20K–25K
avg 500–750/product
Revenue / yr
€318K–€398K
units × avg price
Conversion rate
2.7%
Avg BSR
#200
Page quality
0%
Prime
66%
Sponsored
91%
Out of stock
4.0%
Avg brand age
35 months
Avg seller age
201 days

Competition & brand share

The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 flat

Sellers

17

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

49%

Top 20: 87%

Open market

11%

  • JESSPOW32%
  • GLK-Technologies24%
  • POWOBEST23%
  • Generic4%
  • AMAZIPOWER3%
  • XPJBKC2%
  • Open — no brand owns it (9 brands, 11%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -16.1% search growth over the last 90 days.
30K20KPrime Day '24Spike '24Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Nov · busiest ÷ quietest = 1.6×

Top 18650 akku search terms

  • 18650 akku293K/yr
  • 18650130K/yr
  • 18650 akku li-ion116K/yr
  • akku 1865084K/yr
  • akku 18650 3.7v li-ion33K/yr
  • 18650 akku e zigarette34K/yr
  • 18650 battery17K/yr
  • 3 7 volt akku23K/yr
  • 3 7v akku17K/yr
  • akku 3 7 volt17K/yr
All search terms

Top 18650 akku 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%4%€15K8%€31K12%€46K16%€62K1101001K Reviews — right = deep review moat Market 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.

What buyers say about 18650 akku

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

What buyers love

Akkulaufzeit25%

“Beste Akkus bisher”

Qualität insgesamt20%

“Super Qualität”

Gesamtgröße10%

“Passt”

Aufladen10%

“cool, alles wie beschrieben, hatte 2x bestellt, also 4x akkus und 2(+1) ladegerät (gratis)”

Preis-Leistungs-Verhältnis9%

“kostengünstige Alternative”

beworben Vs Tatsächliches Produkt7%

“Das Produkt entspricht genau der Beschreibung”

Haltbarkeit3%

“Wirken stabil und sauber verarbeitet”

Speicherkapazität3%

“Hohe Kapazität”

Stärke2%

“Viel Leistung”

Benutzerfreundlichkeit1%

“Besonders praktisch ist, dass sie wiederaufladbar sind”

What buyers complain about

Aufladen25%

“konnte nicht geladen werden”

Akkulaufzeit16%

“2 von 4 Akkus waren defekt”

Qualität insgesamt12%

“Ungenügend”

Gesamtgröße7%

“Passt nicht”

beworben Vs Tatsächliches Produkt5%

“falsche Angaben sind Betrug)”

Preis-Leistungs-Verhältnis5%

“Schade ums Geld”

Funktionalität insgesamt3%

“Hält nicht was es verspricht”

Speicherkapazität3%

“Kapazität scheint niedriger zu sein, schnell leer”

Haltbarkeit3%

“Leider keine Haltbarkeit”

Messung / Ablesegenauigkeit2%

“Die Spezifikationen waren ungenau”

Top return reasons

Gesamtgröße67%
Kompatibilität – insgesamt8%
Aufladen7%
Funktionalität insgesamt6%
Akkulaufzeit3%
Defekt Material/Teile3%
Konnektivität – insgesamt2%
beworben Vs Tatsächliches Produkt1%
Qualität insgesamt1%
Preis-Leistungs-Verhältnis1%

Common questions

Is 18650 akku profitable to sell on Amazon Germany?
The niche generates €385K/yr across 32 tracked products. 3 of 11 products launched in the last 360 days are still selling. 90-day search growth is -16.1%. Flapen's verdict: Worth a look (53/100).
How competitive is the 18650 akku niche?
15 brands and 17 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 87% of demand.
What do buyers complain about in 18650 akku?
Top complaints mined from reviews: Aufladen, Akkulaufzeit, Qualität insgesamt. The return rate is 1.5%.
When does demand for 18650 akku peak?
Demand peaks in Nov; the busiest month runs 1.6× the quietest.
What does it cost to enter the 18650 akku niche?
Listings span €9.09–€25.61; the average listing price is €15.92 (sweet spot $15–$100). The average incumbent carries 115 reviews — the moat a new listing must climb.