eufy doorbell battery
Skip itHigh returns (5.7%) — this niche doesn't clear our bar today.
Avg price
Great$49.24avg listing price — sweet spot $15–$100
Review moat
Great176.5avg incumbent reviews — the moat a new listing must climb
Conversion
Good6.7%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Price range
Good$19.66–$149.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+13.3%90-day search growth — must beat 0% to launch
Brand share
Okay80%top-5 brand share — brands hold most of the demand
Market size
Okay$205K$205K/yr · 62K searches
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Returns
Bad5.7%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, eufy doorbell battery is a $205K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Dec. Verdict: Skip it — 49/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
eufy doorbell battery market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $148K–$197K
- units × avg price
- Conversion rate
- 6.7%
- Avg BSR
- #411
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 94%
- Out of stock
- 8.4%
- Avg brand age
- 19 months
- Avg seller age
- 152 days
Competition & brand share
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
12 rising
Sellers
15
Top-5 brand share
80%
Top 20: 100%
Top-5 click share
68%
Top 20: 100%
Open market
15%
- REACELL21%
- eufy Security21%
- Lesaps14%
- SAPBJ14%
- Fulpower10%
- LBTPH5%
- Open — no brand owns it (6 brands, 15%)
Demand & seasonality
Weekly Amazon search volume, last 73 weeks — +13.3% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 2.0×
Top eufy doorbell battery search terms
- eufy doorbell camera battery18K/yr
- eufy e340 battery22K/yr
- eufy doorbell battery16K/yr
- eufy doorbell battery replacement3K/yr
- eufy e340 doorbell battery4K/yr
Top eufy doorbell battery 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.
All 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
REACELL E340 Battery Compatible for eufy Video Doorbell E340 7000mAh High Capacity Replacement Battery for E340 Video Doorbell
REACELL$28.764.4★58 rev
eufy Security Video Doorbell E340 Kit No Subscription Dual Cameras Head-to-Toe View 2K FHD Doorbell Camera Two-Way Talk Delivery Guard AI Motion Detection Rechargeable Battery Built-in 8GB
eufy Security$139.944.2★1,061 rev
Lesaps 1-Pack Replacement Battery for eufy Video Doorbell E340
Lesaps$23.994.4★46 rev
Fulpower 1-Pack Replacement Battery for eufy e340 doorbell Battery
Fulpower$23.174.6★44 rev
SAPBJ Battery Replacement for eufy Security Video Doorbell E340 Rechargeable Lithium-ion Backup Battery with Type-C Charge Cable Upgraded 7000mAh Capacity
SAPBJ$29.074.6★13 rev
Newest
by launch date
NASTIMA E340 7000mAh Li-ion Battery Compatible with Eufy Video Doorbell E340 Quick-Release Battery Pack with USB-C Long-Lasting Built-in BMS
NASTIMA$19.6612 rev
OHZHAO 2 Pack 2026 Upgraded 8200mAh E340 Battery Compatible with eufy Video Doorbell E340 High Capacity Replacement Backup Battery with Type-C Charge Cable
OHZHAO$43.420 rev
Fulpower 1-Pack Replacement Battery for eufy e340 doorbell Battery
Fulpower$23.1744 rev
Lesaps 1-Pack Replacement Battery for eufy Video Doorbell E340
Lesaps$23.9946 rev
Lesaps 2-Pack Replacement Battery for eufy Video Doorbell E340
Lesaps$47.0146 rev
Trending
90-day click momentumLesaps 1-Pack Replacement Battery for eufy Video Doorbell E340
Lesaps$23.994.4★
Fulpower 1-Pack Replacement Battery for eufy e340 doorbell Battery
Fulpower$23.174.6★
Lesaps 2-Pack Replacement Battery for eufy Video Doorbell E340
Lesaps$47.014.4★
OHZHAO 2 Pack 2026 Upgraded 8200mAh E340 Battery Compatible with eufy Video Doorbell E340 High Capacity Replacement Backup Battery with Type-C Charge Cable
OHZHAO$43.420.0★
NASTIMA E340 7000mAh Li-ion Battery Compatible with Eufy Video Doorbell E340 Quick-Release Battery Pack with USB-C Long-Lasting Built-in BMS
NASTIMA$19.664.9★
What buyers say about eufy doorbell battery
What buyers praise and complain about, mined from review topics.What buyers love
“Battery life is really good”
“Excellent value”
“Great camera view”
“Excellent product”
“Holds its charge”
“Easy setup”
“As advertised”
“Clear picture”
“Fits perfectly”
“easy to work with”
What buyers complain about
“Slow connectivity”
“Battery life is terrible”
“Does not work as described”
“Doesnt hold a charge”
“Breaks easily”
“Difficult to set up”
“Disappointing Experience not worth the price”
“Garbage and waste of time product”
“C31 camera stopped working less than 3 months after purchase”
“Googled this and found several posts confirming from multiple users that this unit is not compatible with Google Home even though Eufy says it is”
Top return reasons
Common questions
- Is eufy doorbell battery profitable to sell on Amazon United States?
- The niche generates $205K/yr across 16 tracked products. 3 of 10 products launched in the last 360 days are still selling. 90-day search growth is +13.3%. Flapen's verdict: Skip it (49/100).
- How competitive is the eufy doorbell battery niche?
- 12 brands and 15 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 80% of demand.
- What do buyers complain about in eufy doorbell battery?
- Top complaints mined from reviews: Connectivity-Overall, Battery Life, Functionality-Overall. The return rate is 5.7% — above our launch gate.
- When does demand for eufy doorbell battery peak?
- Demand peaks in Dec; the busiest month runs 2.0× the quietest.
- What does it cost to enter the eufy doorbell battery niche?
- Listings span $19.66–$149.60; the average listing price is $49.24 (sweet spot $15–$100). The average incumbent carries 177 reviews — the moat a new listing must climb.