Is nikon d40 battery profitable to sell on Amazon United States?

The niche generates $108K/yr across 11 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +12.8%. Flapen's verdict: Skip it (49/100).

How competitive is the nikon d40 battery niche?

8 brands and 15 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in nikon d40 battery?

Top complaints mined from reviews: Charging, Battery Life, Durability. The return rate is 1.5%.

When does demand for nikon d40 battery peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the nikon d40 battery niche?

Listings span $8.93–$53.48; the average listing price is $21.79 (sweet spot $15–$100). The average incumbent carries 318 reviews — the moat a new listing must climb.

nikon d40 battery

Skip it

A concentrated shelf (top 5 take 80% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible14.8%

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

Avg price

Great$21.79

avg listing price — sweet spot $15–$100

Returns

Great1.5%

return rate — above 5% kills the launch gate

Review moat

Great318

avg incumbent reviews — the moat a new listing must climb

Price range

Great$8.93–$53.48

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

Growth

Okay+12.8%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay$108K

$108K/yr · 33K searches

Brand share

Bad92%

top-5 brand share — brand-locked demand

Competition

Bad80%

top-5 click share — a locked-up shelf

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, nikon d40 battery is a $108K/yr Amazon United States market (33K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 49/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

nikon d40 battery market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $87K–$109K; units × avg price
Conversion rate: 14.8%
Avg BSR: #446
Page quality: 0%
Prime: 91%
Sponsored: 73%
Out of stock: 8.5%
Avg brand age: 91 months
Avg seller age: 199 days

Competition & brand share

The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 falling

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

80%

Top 20: 100%

Open market

FCDAZR38%
FirstPower22%
Kastar20%
LP8%
Batmax5%
SUGUBU4%
Open — no brand owns it (2 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +12.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top nikon d40 battery search terms

nikon d40 battery9K/yr +27.3%12.9% conv.
nikon d5000 battery8K/yr -0.2%10.8% conv.
nikon d3000 battery8K/yr +10.5%12.6% conv.
nikon d60 battery6K/yr +17.4%11.9% conv.
nikon lithium ion battery pack en-el93K/yr +5.7%15.2% conv.

All search terms

Top nikon d40 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

FCDAZR EN-EL9 EN-EL9a Battery(2-Pack) and USB Dual Charger for Nikon D40 D40x D60 D3000 D5000 Cameras

FCDAZR$20.994.7★58 rev

FirstPower EN-EL9 EN EL9a Battery 2-Pack 2000mAh and Dual USB Charger Compatible with Nikon D40 D40x D60 D3000 D5000 Digital SLR Cameras

FirstPower$23.694.7★66 rev

Kastar 2 Packs EN-EL9 Compatible Battery Replacement for Nikon EN-EL9 EN-EL9a EN-EL9e Batteries and Nikon D40 D40x D60 D5000 D3000 Cameras Nikon MH-23 Charger

Kastar$13.754.4★653 rev

EN-EL9 EN EL9a Battery Pack LP 2-Pack 1050mAh Rechargeable Li-Ion Battery Set Compatible with Nikon D40 D40X D60 D3000 D5000 Cameras

LP$20.674.5★374 rev

Kastar High Capacity EN-EL9 Replacement Lithium-Ion Battery for Nikon EN-EL9 EN-EL9a EN-EL9e Battery MH-23 Charger and Nikon D40 D40X D60 D3000 D5000 SLR Camera

Kastar$8.934.6★235 rev

Newest

by launch date

FirstPower EN-EL9 EN EL9a Battery 2-Pack 2000mAh and Dual USB Charger Compatible with Nikon D40 D40x D60 D3000 D5000 Digital SLR Cameras

FirstPower$23.6966 rev

6mo ago

FCDAZR EN-EL9 EN-EL9a Battery(2-Pack) and USB Dual Charger for Nikon D40 D40x D60 D3000 D5000 Cameras

FCDAZR$20.9958 rev

7mo ago

SUGUBU 2-Pack EN-EL9 Replacement Battery(2000mAh) and Rapid USB Dual Charger Compatible with Nikon EN-EL9 EN-EL9a D40 D40x D60 D3000 D5000 Digital SLR Cameras

SUGUBU$22.4422 rev

11mo ago

EN-EL9 EN EL9a Battery Pack LP 2-Pack 1050mAh Rechargeable Li-Ion Battery Set Compatible with Nikon D40 D40X D60 D3000 D5000 Cameras

LP$20.67374 rev

5y ago

Kastar 1-Pack EN-EL9 Battery and AC Wall Charger Replacement for Nikon D5000 D40 D40X D60 D3000 SLR Digital Cameras

Kastar$11.5684 rev

6y ago

What buyers say about nikon d40 battery

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

What buyers love

Battery Life26%

“Solid batteries”

Charging22%

“Charging was quick”

Value For Money11%

“Good Value”

Advertised Vs Actual Product9%

“As advertised”

Compatibility-Overall8%

“it is compatible”

Size-Overall5%

“Fit perfect”

Quality-Overall5%

“The charger feels noticeably high quality”

Ease Of Use2%

“Its simple”

Lenses2%

“And yes, these cameras are still very capable, especially since they fit F mount lenses”

Durability1%

“The charger and batteries are well made and appear durable”

What buyers complain about

Charging28%

“Batteries would not charge”

Battery Life23%

“my camera battery started to die”

Durability8%

“In fact it feels like it would easily crack if dropped”

Compatibility-Overall6%

“Dont work in D60”

Design-Overall3%

“Poor construction”

Value For Money3%

“for the cheap price it wasn't worth time”

Size-Overall2%

“Battery will only fit cameras listed in discription and newer Nikon D-3000 and D-5000 cameras”

Quality-Overall2%

“Overall, I was disappointed with the quality and expected better based on the product description”

Strength1%

“It is very flimsy feeling plastic with no weight to it”

Top return reasons

Compatibility-Overall26%

Charging18%

Size-Overall13%

Camera Quality12%

Advertised Vs Actual Product9%

Battery Life7%

Value For Money5%

Functionality-Overall2%

Defective Material/Parts2%

Quality-Overall1%

Common questions

Is nikon d40 battery profitable to sell on Amazon United States?: The niche generates $108K/yr across 11 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +12.8%. Flapen's verdict: Skip it (49/100).
How competitive is the nikon d40 battery niche?: 8 brands and 15 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in nikon d40 battery?: Top complaints mined from reviews: Charging, Battery Life, Durability. The return rate is 1.5%.
When does demand for nikon d40 battery peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the nikon d40 battery niche?: Listings span $8.93–$53.48; the average listing price is $21.79 (sweet spot $15–$100). The average incumbent carries 318 reviews — the moat a new listing must climb.