21700 Battery
FailShoppers spend only $26K a year here, so 21700 Battery is a Fail.
- Flapen Score
- 40 / 100Ranks 975 of 1,488 Electronics & Photo niches · −4 vs the category median of 4440
- Market size
- £26K/yr65K searches / yr
- 90-day growth
- -13.9%search demand this quarter
- Competition
- 78%top-5 click share · 7 brands · 11 sellers
Flapen Score
21700 Battery against its category
The dotted line is the Electronics & Photo average. Past it, 21700 Battery is stronger. Inside it, weaker.
Market
The 21700 Battery market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for 21700 Battery 65K times last year and spent an estimated £26K. The top 5 brands take 96% of clicks. Flapen scores it 40 out of 100, a Fail.
01 · Demand
2.8% of searches ended in a purchase last week.
Shoppers searched for this 65K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 2.8% of those searches ended in a purchase. Searches in the last 90 days moved -13.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated £26K a year.
- Searches, last 12 months
- 65K
- Growth, 90 days vs prior 90
- -13.9%
- Conversion, latest week
- 2.8%
- Market size, estimated
- £26Ka year
- Peak month
- January1.4× the quietest month
- Top search term
- 21700 battery50K searches a year
02 · Price
A sale here is worth £14.80.
Listings sell for £14.80 on average, from £5.23 to £20.40. Amazon reports units sold in ranges. This niche sold 3K to 3K a year. The average listing sells 100 to 250 of them. At £14.80 that is £1K to £4K a year per listing.
- Average price
- £14.80under the $15 to $100 sweet spot
- Price range
- £5.23–£20.40
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 3K–3K
- Units per listing a year
- 100–250
- Revenue per listing a year
- £1K–£4K
- Returns
- 1.0%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
27% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 10.8% of listings are out of stock. The average listing ranks #116 within E-Cigarettes, E-Shisha & Heat-Not-Burn. It carries 41 reviews at 3.86 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 27%
- Prime listings
- 100%
- Out of stock, average day
- 10.8%
- Average rank
- #116in E-Cigarettes, E-Shisha & Heat-Not-Burn
- Average rating
- 3.86 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 41per listing
- Listings tracked
- 11
04 · Newcomers
Amazon counts 3 of last year's 6 launches as successful.
6 products launched here in the last 12 months. Amazon counts 3 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 27 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 6
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 27 months
Products
Top 21700 Battery products & what they sell for
Every tracked product: its share of the shelf, its reviews, and its price.
Top sellers
by 90-day click share
3.7 Volt Rechargeable Batteries 5000mAh High Capacity Flat Top Battery for Flashlights Headlamps (Pack of 221 X 70mm)
- Price
- £15.15
- Rating
- 4.1/5
- Reviews
- 25
- Age
- 6mo ago

Molicel P42A 4200 mAh 45A Size: 21.7K High Amp Flat Top Battery No Nicotine
- Price
- £17.83
- Rating
- 4.0/5
- Reviews
- 81
- Age
- 2y ago

P42A 21/700 4000mah Rechargable Compatible With Vapcell Products - For E-Cigarette Ecig Vape Mods/Kits + 10ml Nightmare Juice Nicotine Free (2 Pack)
- Price
- £16.46
- Rating
- 2.5/5
- Reviews
- 5
- Age
- 1y ago

21/700 6000mAh Highest MAH Red Compatible With Fogstar Energy Works 10A Rechargeable Cell With Sub Ohm Kit No Nicotine + Band (2 PACK)
- Price
- £20.40
- Rating
- 3.0/5
- Reviews
- 2
- Age
- 8mo ago

4000mAh Green 217/00 Compatible With Fogstar Energy Works With Sub Ohm Kit + Band No Nicotine (2 Pack)
- Price
- £16.47
- Rating
- 4.1/5
- Reviews
- 32
- Age
- 1y ago
Trending
90-day click momentum![Voopoo Argus XT Vape Kit [Silver Grey] - Available in 5 colours - 3A Fast Charge 18650/21700 Battery (SOLD SEPARATELY) 100W - Compatible with MAAT Tanks & TPP Coils - No Nicotine](https://m.media-amazon.com/images/I/41Mn0NNDUzL.jpg)
Voopoo Argus XT Vape Kit [Silver Grey] - Available in 5 colours - 3A Fast Charge 18650/21700 Battery (SOLD SEPARATELY) 100W - Compatible with MAAT Tanks & TPP Coils - No Nicotine
- Price
- £16.36
- Rating
- 3.6/5
- Reviews
- 55
- Age
- 5mo ago

3.7 Volt Rechargeable Batteries 5000mAh High Capacity Flat Top Battery for Flashlights Headlamps (Pack of 221 X 70mm)
- Price
- £15.15
- Rating
- 4.1/5
- Reviews
- 25
- Age
- 6mo ago
![EFEST 3000 Rechargeable Battery with Protective Case [Single]](https://m.media-amazon.com/images/I/318Ytssn5RL.jpg)
EFEST 3000 Rechargeable Battery with Protective Case [Single]
- Price
- £7.86
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 6mo ago
![EFEST 3500 Rechargeable Battery 20A with Protective Case [Pack of 2]](https://m.media-amazon.com/images/I/41N7niQgEzL.jpg)
EFEST 3500 Rechargeable Battery 20A with Protective Case [Pack of 2]
- Price
- £18.68
- Rating
- 4.7/5
- Reviews
- 92
- Age
- 10mo ago
![EFEST 3000 Rechargeable Battery with Protective Case [Pack of 2]](https://m.media-amazon.com/images/I/41z-pwt691L.jpg)
EFEST 3000 Rechargeable Battery with Protective Case [Pack of 2]
- Price
- £15.31
- Rating
- 3.5/5
- Reviews
- 8
- Age
- 1y ago
Newest
by launch date![Voopoo Argus XT Vape Kit [Silver Grey] - Available in 5 colours - 3A Fast Charge 18650/21700 Battery (SOLD SEPARATELY) 100W - Compatible with MAAT Tanks & TPP Coils - No Nicotine](https://m.media-amazon.com/images/I/41Mn0NNDUzL.jpg)
Voopoo Argus XT Vape Kit [Silver Grey] - Available in 5 colours - 3A Fast Charge 18650/21700 Battery (SOLD SEPARATELY) 100W - Compatible with MAAT Tanks & TPP Coils - No Nicotine
- Price
- £16.36
- Rating
- 3.6/5
- Reviews
- 55
- Age
- 5mo ago
![EFEST 3000 Rechargeable Battery with Protective Case [Single]](https://m.media-amazon.com/images/I/318Ytssn5RL.jpg)
EFEST 3000 Rechargeable Battery with Protective Case [Single]
- Price
- £7.86
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 6mo ago

3.7 Volt Rechargeable Batteries 5000mAh High Capacity Flat Top Battery for Flashlights Headlamps (Pack of 221 X 70mm)
- Price
- £15.15
- Rating
- 4.1/5
- Reviews
- 25
- Age
- 6mo ago

VENNERLI Rechargeable Lithium Batteries with USB-C Cable Fast Charging Battery 3.7V 7400mWh High-Capacity 2000+ Cycles Ultra-Long Lasting Time Durable Cycle Smart Charging LED Indicator (2-Pack Set)
- Price
- £13.03
- Rating
- 4.7/5
- Reviews
- 36
- Age
- 7mo ago

21/700 6000mAh Highest MAH Red Compatible With Fogstar Energy Works 10A Rechargeable Cell With Sub Ohm Kit No Nicotine + Band (2 PACK)
- Price
- £20.40
- Rating
- 3.0/5
- Reviews
- 2
- Age
- 8mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take 78% of clicks. A locked shelf that new listings rarely crack.
Brands
7 falling
Sellers
11
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
78%
Top 20: 100%
Open market
1%
- Global Rankings31%
- JESSPOW27%
- VOOPOO19%
- Efest12%
- VENNERLI6%
- fenix3%
- Open — no brand owns it (1 brand, 1%)
Demand
21700 Battery search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top 21700 Battery search terms shoppers use
The exact words shoppers type, with yearly volume, growth, and conversion.
- 21700 battery50K/yr
- 21700 vaping battery6K/yr
- 217005K/yr
- 21700 battery 5000mah4K/yr
Reviews and returns
What reviews say buyers love and hate about 21700 Battery
What buyers praise, what they complain about and why they send it back, from the reviews.
Complain
will not charge
It might have something to do with replacing my old generic charger. it wasnt charging properly
One battery didn't work after 1 charge
they are an odd size
they are actually bigger - that was my fault
not a universal fit _ buy monicell or vapecell
cost a fortune in different batteries
Capacity wise, theyre not far off their 2000mAh capacity, one of them is slightly over though its only been a couple of charge and discharge cycles so its early days
Dead Battery
This should really be stated clearly in the listing to avoid confusion
5000is marketing exaggeration
Not as described
Not as good in capacity as the normal ones
Love
Great batteries
Great battery life
Decent quality batteries
Brilliant Charger
Good charger, charges well, would recommend
charge fairly quickly
Good quality
The build quality is fantastic
The build quality feels remarkably high
great value for money
Good price
Value for Money
The brand highlights durability
It sealed all arround realy well and seems durable
have been consistently reliable in different devices
Return
1.0% Return rate 64% Fixable by listing
they are an odd size
they are actually bigger - that was my fault
not a universal fit _ buy monicell or vapecell
will not charge
It might have something to do with replacing my old generic charger. it wasnt charging properly
One battery didn't work after 1 charge
Worked great until the insulation came off the positive end
cost a fortune in different batteries
Capacity wise, theyre not far off their 2000mAh capacity, one of them is slightly over though its only been a couple of charge and discharge cycles so its early days
Dead Battery
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 21700 Battery questions
Answered from the same tracked data.









