---
title: "390 Watch Battery — $86K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/390-watch-battery"
last_updated: "2026-08-06T17:49:15.480Z"
locale: en
meta:
description: "Niche score 39/100 · $86K/yr market · 81K searches/yr · $6.22 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $86K/yr market · 81K searches/yr · $6.22 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "390 Watch Battery — $86K/yr Amazon US Niche (2026) - Flapen"
---
# **390 watch battery**
**Skip it**
Prices mostly outside the sweet spot ($4.09–$9.95) — this niche doesn't clear our bar today.
Market size 22Growth 44Conversion 98Competition 15Returns 97Price range 0Avg price 17Brand share 23Review moat 46Quality gap 22
**Conversion**
**Incredible****17.2%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Review moat**
**Okay****1,913.9**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+15.5%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****91%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$86K**
$86K/yr · 81K searches
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Bad****$6.22**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****82%**
top-5 click share — a locked-up shelf
**Price range**
**Bad****$4.09–$9.95**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, 390 watch battery is a $86K/yr Amazon United States market (81K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 39/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **390 watch battery market data**
- **Units sold / yr**
- **13K–15K**
- avg 1,250–1,500/product
- **Revenue / yr**
- **$78K–$93K**
- units × avg price
- **Conversion rate**
- **17.2%**
- **Avg BSR**
- **#274**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **60%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **76 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**46**
**Top-5 brand share**
**91%**
Top 20: 100%
**Top-5 click share**
**82%**
Top 20: 100%
**Open market**
**4%**
- Renata44% - PKCELL16% - DURACELL13% - Energizer12% - YKM6% - LOOPACELL5% - Open — no brand owns it (1 brand, 4%)
## **Demand & seasonality**
Weekly Amazon search volume, last 103 weeks — +15.5% search growth over the last 90 days.
2K1KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/390-watch-battery/trend)
## **Top 390 watch battery search terms**
- **390 watch battery**22K/yr+16.8%21.5% conv. - **390 battery**11K/yr+11.6%16.4% conv. - **swatch watch battery**9K/yr+29.9%4.2% conv. - **swatch battery**8K/yr+28.6%5.3% conv. - **renata 390 watch battery**7K/yr+25.2%25.3% conv. - **swatch battery replacement**7K/yr+12.3%4.3% conv. - **battery 390**4K/yr-10.2%19.9% conv. - **swatch battery 390**3K/yr+29.1%25.8% conv. - **watch battery 390 swatch**3K/yr+11.7%26.8% conv. - **watch battery 390**3K/yr+9.7%18.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/390-watch-battery/search-terms)
## **Top 390 watch 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.
0%10%$9K20%$17K30%$26K40%$34K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Renata 390 SR1130SW Batteries - 1.55V Silver Oxide 390 Watch Battery (2 Count)**Renata**$5.63**4.7★5,278 rev](https://www.amazon.com/dp/B00478PJN4) [2**PKCELL LR1130 Battery LR54 AG10 389 390 Button Cell Battery 1.5V Alkaline Button Batteries (10 Count (Pack of 1))**PKCELL**$4.74**4.6★3,735 rev](https://www.amazon.com/dp/B0DB5LRRB9) [3**Energizer 390/389 Silver Oxide Cd/5**Energizer**$9.95**4.6★1,483 rev](https://www.amazon.com/dp/B0014WTLYO) [4**Duracell 389/390 Silver Oxide Button Battery 1 Count Pack 389/390 1.5 Volt Battery Long-Lasting for Watches Medical Devices Calculators and More**DURACELL**$5.44**4.7★2,197 rev](https://www.amazon.com/dp/B077NPTFZT) [5**10 Pack LR1130 Battery L1131f L1131 L1131c 390 LR54 1.5V Alkaline Battery**YKM**$4.09**4.6★991 rev](https://www.amazon.com/dp/B0CFVNPBF8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**PKCELL LR1130 Battery LR54 AG10 389 390 Button Cell Battery 1.5V Alkaline Button Batteries (10 Count (Pack of 1))**PKCELL**$4.74**3,735 rev1y ago](https://www.amazon.com/dp/B0DB5LRRB9) [**Fuspower LR1130 Watch Battery 1.5V: 389 390 Alkaline Batteries 10 Pack - LR54 Button Coin Cell for Calculator Everyday Replacement - Fathers Day Laser Pointers Graduation Toys**Fuspower**$5.66**625 rev2y ago](https://www.amazon.com/dp/B0CRKSM6WP) [**10 Pack LR1130 Battery L1131f L1131 L1131c 390 LR54 1.5V Alkaline Battery**YKM**$4.09**991 rev2y ago](https://www.amazon.com/dp/B0CFVNPBF8) [**BATTERY WATCH 1.5V 389**DURACELL**$5.93**110 rev11y ago](https://www.amazon.com/dp/B00LQQL8EE) [**Renata 394 SR936SW Batteries - 1.55V Silver Oxide 394 Watch Battery (2 Count)**Renata**$5.22**3,797 rev11y ago](https://www.amazon.com/dp/B09VVTMSHC)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**10 Pack LR1130 Battery L1131f L1131 L1131c 390 LR54 1.5V Alkaline Battery**YKM**$4.09**4.6★**▲ 31%**](https://www.amazon.com/dp/B0CFVNPBF8) [**Duracell 389/390 Silver Oxide Button Battery 1 Count Pack 389/390 1.5 Volt Battery Long-Lasting for Watches Medical Devices Calculators and More**DURACELL**$5.44**4.7★**▲ 21%**](https://www.amazon.com/dp/B077NPTFZT) [**Renata 394 SR936SW Batteries - 1.55V Silver Oxide 394 Watch Battery (2 Count)**Renata**$5.22**4.7★**▲ 17%**](https://www.amazon.com/dp/B09VVTMSHC) [**Energizer 390/389 Silver Oxide Cd/5**Energizer**$9.95**4.6★**— 4%**](https://www.amazon.com/dp/B0014WTLYO) [**LOOPACELL 390/389 Silver Oxide Batteries**LOOPACELL**$5.97**4.4★**— 3%**](https://www.amazon.com/dp/B074JFVGWP)
**~~View all trending →~~**
## **What buyers say about 390 watch battery**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Battery Life**28%
*“Batteries worked well”*
**Advertised Vs Actual Product**17%
*“As advertised”*
**Value For Money**16%
*“Reasonable price”*
**Size-Overall**12%
*“Exact fit”*
**Quality-Overall**6%
*“Orders arriving on time and quality”*
**Ease Of Use**6%
*“Ease of use”*
**Durability**4%
*“Longevity, time will tell”*
**Charging**2%
*“Really got a charge when I got these”*
**Efficiency**2%
*“Working great”*
**Correct Contents**1%
*“correct number of correct item”*
### **What buyers complain about **
**Battery Life**43%
*“Battery sent to me was dead”*
**Value For Money**12%
*“It may cost more”*
**Durability**11%
*“Dies fast”*
**Size-Overall**10%
*“Not the right size”*
**Quality-Overall**6%
*“Poor Quality”*
**Charging**4%
*“lose charge quickly”*
**Touch/Button Controls**3%
*“Need button”*
**Assembly/Installation**3%
*“had not installed them yet”*
**Functionality-Overall**3%
*“did not work”*
**Compatibility-Overall**2%
*“ones received did not indicate this compatibility”*
### **Top return reasons **
**Size-Overall**43%
**Functionality-Overall**17%
**Battery Life**13%
**Advertised Vs Actual Product**6%
**Defective Material/Parts**6%
**Compatibility-Overall**4%
**Value For Money**3%
**Charging**2%
**Product Condition**2%
**Thickness**1%
## **Common questions**
- **Is 390 watch battery profitable to sell on Amazon United States?**
- The niche generates $86K/yr across 10 tracked products. 90-day search growth is +15.5%. Flapen's verdict: Skip it (39/100).
- **How competitive is the 390 watch battery niche?**
- 7 brands and 46 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 91% of demand.
- **What do buyers complain about in 390 watch battery?**
- Top complaints mined from reviews: Battery Life, Value For Money, Durability. The return rate is 0.6%.
- **When does demand for 390 watch battery peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the 390 watch battery niche?**
- Listings span $4.09–$9.95; the average listing price is $6.22 (sweet spot $15–$100). The average incumbent carries 1,914 reviews — the moat a new listing must climb.
## **Related niches in Health & Household**
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)