---
title: "Reviews — 18650 battery - Flapen"
canonical_url: "https://flapen.com/research/uk/electronics-photo/18650-battery/reviews"
last_updated: "2026-07-31T08:52:51.885Z"
locale: en
meta:
  description: "Niche score 59/100 · £384K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 59/100 · £384K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Reviews — 18650 battery - Flapen"
---

# **18650 battery**

**Worth a look**

Shows a thin review moat (92 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 55Growth 18Conversion 54Competition 76Returns 88Price range 60Avg price 74Brand share 37Review moat 95Quality gap 75

**Review moat**

**Incredible****92.13**

avg incumbent reviews — the moat a new listing must climb

**Returns**

**Great****1.4%**

return rate — above 5% kills the launch gate

**Competition**

**Great****39%**

top-5 click share — an open shelf

**Quality gap**

**Great****4.3★**

avg incumbent rating — lower means beatable quality

**Avg price**

**Good****£14.89**

avg listing price — sweet spot $15–$100

**Price range**

**Good****£7.86–£25.59**

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

**Market size**

**Good****£384K**

£384K/yr · 569K searches

**Conversion**

**Good****4.5%**

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

**Brand share**

**Okay****83%**

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

**Growth**

**Bad****-13.9%**

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