np4-12 12v 4.0ah battery
Skip itA small market ($34K/yr) — this niche doesn't clear our bar today.
Conversion
Incredible18.6%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$25.38avg listing price — sweet spot $15–$100
Price range
Incredible$17.53–$42.68cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Great+90.6%90-day search growth — must beat 0% to launch
Returns
Good2.4%return rate — above 5% kills the launch gate
Review moat
Okay2,105.18avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad95%top-5 brand share — brand-locked demand
Competition
Bad84%top-5 click share — a locked-up shelf
Market size
Bad$34K$34K/yr · 7K searches
According to Flapen's Amazon United States niche tracking, np4-12 12v 4.0ah battery is a $34K/yr Amazon United States market (7K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 48/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
np4-12 12v 4.0ah battery market data
- Units sold / yr
- 1K–2K
- avg 0–100/product
- Revenue / yr
- $32K–$38K
- units × avg price
- Conversion rate
- 18.6%
- Avg BSR
- #967
- Page quality
- 0%
- Prime
- 64%
- Sponsored
- 73%
- Out of stock
- 6.2%
- Avg brand age
- 116 months
- Avg seller age
- 199 days
Competition & brand share
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 flat
Sellers
23
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
84%
Top 20: 100%
Open market
2%
- Yuasa31%
- Enersys25%
- Casil22%
- UPLUS NEW TECHNOLOGY BATTERY11%
- SigmasTek5%
- Mighty Max Battery4%
- Open — no brand owns it (1 brand, 2%)
Top np4-12 12v 4.0ah 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 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
YUASA Battery NP4-12 General Purpose VRLA 12V 4AH Battery Lead Calcium Grids for Superior Life Absorbed Glass Mat Construction with No Free Acid Gas Recombination
Yuasa$25.514.6★1,310 rev
EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector
Enersys$25.624.7★1,939 rev
Casil CA1240 12V 4Ah SLA/AGM Sealed Lead-Acid Maintenance-Free Alarm Battery F1 Terminals
Casil$21.894.6★6,374 rev
UPLUS LP12-4.0 12V 4AH Rechargeable SLA AGM Battery with F1/F2 terminals Replacement Batteries for Alarm Security Control Panel Garage Door Opener Ion Block Rockers UPS Ride On Truck etc.
UPLUS NEW TECHNOLOGY BATTERY$18.894.6★2,684 rev
EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector (2 Pack)
Enersys$42.684.7★78 rev
Newest
by launch dateUPLUS LP12-4.0 12V 4AH Rechargeable SLA AGM Battery with F1/F2 terminals Replacement Batteries for Alarm Security Control Panel Garage Door Opener Ion Block Rockers UPS Ride On Truck etc.
UPLUS NEW TECHNOLOGY BATTERY$18.892,684 rev
Casil CA1250 12V 5Ah SLA AGM Alarm Battery Rechargeable Sealed Lead Acid Upgrade Replacement for CA1240 12V 4Ah ADT Security Systems UPS Backup Power
Casil$20.44214 rev
Mighty Max Battery ML5-12 - 12 Volt 5 AH F1 Terminal Rechargeable SLA AGM Battery
Mighty Max Battery$17.5310,459 rev
EnerSys Genesis NP4-12 - 12 Volt/4 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector (2 Pack)
Enersys$42.6878 rev
Yuasa NP4-12 Battery 12 Volt 4 Amp Sealed Lead Acid Battery (2)
Yuasa$41.2674 rev
Trending
90-day click momentumCasil CA1250 12V 5Ah SLA AGM Alarm Battery Rechargeable Sealed Lead Acid Upgrade Replacement for CA1240 12V 4Ah ADT Security Systems UPS Backup Power
Casil$20.444.7★
Casil CA1240 12V 4Ah SLA/AGM Sealed Lead-Acid Maintenance-Free Alarm Battery F1 Terminals
Casil$21.894.6★
NP4-12 - 12 Volt/4 Amp Hour SLA Battery with 0.187 Fast-on Connector 3 Year Warranty
PowerStar$30.135.0★
NP4-12FR 12 Volt 5 AmpH SLA Replacement Battery with F1 Terminal
SigmasTek$17.534.6★
YUASA Battery NP4-12 General Purpose VRLA 12V 4AH Battery Lead Calcium Grids for Superior Life Absorbed Glass Mat Construction with No Free Acid Gas Recombination
Yuasa$25.514.6★
What buyers say about np4-12 12v 4.0ah battery
What buyers praise and complain about, mined from review topics.What buyers love
“Good battery”
“Fit perfect”
“The price was very reasonable”
“Works as advertised”
“Easy install”
“For general replacement quality”
“Compatibility is pretty good”
“Holds good charge”
“easy”
“✔ Strong, steady power”
What buyers complain about
“Short battery life”
“the last one only lasted 7 months”
“The build quality also feels cheap”
“Doesn't fit the ion game day speaker”
“it barely holds a charge”
“Not agm. This not an agm”
“Did not work for me”
“appeared to be used”
“The only downside — and the reason for the lower rating — is compatibility”
“they were kind of expensive”
Top return reasons
Common questions
- Is np4-12 12v 4.0ah battery profitable to sell on Amazon United States?
- The niche generates $34K/yr across 11 tracked products. 90-day search growth is +90.6%. Flapen's verdict: Skip it (48/100).
- How competitive is the np4-12 12v 4.0ah battery niche?
- 7 brands and 23 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 95% of demand.
- What do buyers complain about in np4-12 12v 4.0ah battery?
- Top complaints mined from reviews: Battery Life, Durability, Quality-Overall. The return rate is 2.4%.
- What does it cost to enter the np4-12 12v 4.0ah battery niche?
- Listings span $17.53–$42.68; the average listing price is $25.38 (sweet spot $15–$100). The average incumbent carries 2,105 reviews — the moat a new listing must climb.