nema 14-30 to 14-50 adapter
Skip itHigh returns (9.3%) — this niche doesn't clear our bar today.
Avg price
Incredible$39.62avg listing price — sweet spot $15–$100
Review moat
Great427.78avg incumbent reviews — the moat a new listing must climb
Conversion
Good6.8%search→purchase rate — share of searches ending in a sale
Growth
Good+25.7%90-day search growth — must beat 0% to launch
Price range
Okay$11.38–$190.64cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay80%top-5 brand share — brands hold most of the demand
Competition
Okay69%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$82K$82K/yr · 30K searches
Returns
Bad9.3%return rate — above 6% kills the launch gate
Competition
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.Brands
13 rising
Sellers
18
Top-5 brand share
80%
Open market
15%
- CircleCord30%
- MECMO18%
- Nilight15%
- GZJoSum10%
- Tellegloww8%
- Kanayu5%
- Open — no brand owns it (7 brands, 15%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
CircleCord 4 Prong NEMA 14-30P to 14-50R EV Charger Adapter Cord Compatible with Tesla Model 3/S/X/Y 30 Amp Dryer to 50 Amp EV for Leave 2 Charging ETL Listed (Not for Dryer or RV)
CircleCord$22.244.6★1,847 rev
MECMO 14-30P to 14-50R Level 2 EV Charger Adapter 30A 4-Prong Dryer to EV Charger Adapter (Max 24Amp 240V) - 30 Amp to 50 Amp for Tesla Model 3/S/X/Y Car Charging Not for 3Prong Dryer/RV
MECMO$19.444.6★182 rev
NEMA 14-30P to 14-50R EV Charger Adapter Cord 30 AMP Dryer to 50 AMP EV/RV Conversion Adapter for Leave 2 Charging Compatible with Tesla and RV Use
GZJoSum$20.414.7★63 rev
Nilight EV Adapter Cord 30 Amp to 50 Amp 4 Prong Pure Copper New Dryer Outlet to EV Plug Conversion Heavy Duty 10 Gauge Wire Nema 14-30P to 14-50R 30M/50F for Level 2 EVs Using
Nilight$21.904.7★114 rev
Tellegloww 10FT NEMA 14-30P to 14-50R EV Charger Adapter Cord 30 Amp 4 Prong Dryer to 50 Amp EV for Level 2 Charging Only for 4 Prong New Dryer Outlet STW 10 AWG/4C ETL Listed
Tellegloww$47.464.7★220 rev
Newest
by launch date
Toptozl 25ft EV Charger Adapter Cord Compatible with NEMA 14-30P to 14-50R 30 Amp 4 Prong Dryer Male to 50 Amp 4 Prong EV RV Female for Level 2 or Telsa Charging RV Camper ETL Listed
Toptozl$91.6929 rev
Tellegloww 15FT NEMA 14-30P to 14-50R EV Charger Adapter Cord 30 Amp 4 Prong Dryer to 50 Amp EV for Level 2 Charging Only for 4 Prong New Dryer Outlet STW 10 AWG/4C ETL Listed
Tellegloww$59.07220 rev
LANDNOR Heavy Duty 30 Amp to 50 Amp EV Power Adapter Cord - 4 Prong10 AWG Pure Copper Wire ETL Listed 4-30P to 14-50R 30M/50F Weatherproof for Level 2 EV Using
LANDNOR$11.383 rev
Tellegloww 10FT NEMA 14-30P to 14-50R EV Charger Adapter Cord 30 Amp 4 Prong Dryer to 50 Amp EV for Level 2 Charging Only for 4 Prong New Dryer Outlet STW 10 AWG/4C ETL Listed
Tellegloww$47.46220 rev
Suplevel 20FT EV Charger Adapter 14-30P to 14-50R 24A Max 240V
Suplevel$84.4847 rev
Trending
90-day click momentumLANDNOR Heavy Duty 30 Amp to 50 Amp EV Power Adapter Cord - 4 Prong10 AWG Pure Copper Wire ETL Listed 4-30P to 14-50R 30M/50F Weatherproof for Level 2 EV Using
LANDNOR$11.385.0★
Tellegloww 15FT NEMA 14-30P to 14-50R EV Charger Adapter Cord 30 Amp 4 Prong Dryer to 50 Amp EV for Level 2 Charging Only for 4 Prong New Dryer Outlet STW 10 AWG/4C ETL Listed
Tellegloww$59.074.7★
NEMA 14-30P to 14-50R EV Charger Adapter Cord 4 Prong 30 AMP Dryer to 50 AMP EV Conversion Adapter Only Compatible with Tesla Charger Gen 2 EV Charging ETL & UL Listed
H3JANG$16.334.6★
Campzlly EV Charger Adapter Cord NEMA 14-30P to 14-50R Adapter 30Amp Dryer Plug to 4 Prong Female Compatible with EV for Level 2 Charging STW 10 AGW ETL Listed
Campzlly$17.044.6★
NEMA 14-30P to 14-50R EV Charger Adapter Cord 30 AMP Dryer to 50 AMP EV/RV Conversion Adapter for Leave 2 Charging Compatible with Tesla and RV Use
GZJoSum$20.414.7★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +25.7% search growth over the last 90 days.Peak months: Jul, Aug · busiest ÷ quietest = 1.8×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Works well for charging our Tesla”
“Good adapter”
“seems well made”
“Works as advertised”
“Sturdy”
“price was good”
“Perfect fit”
“Great durable quality”
“Very convenient”
“Great hookup”
What buyers complain about
“if you can't dial back your charging rate. in-vehicle or in-app., don't buy this adapter”
“Not very durable”
“will burn house down”
“Didn't connect flat”
“Doesnt get hot”
“14-30R connector not sized correctly”
“Not the best quality”
“Waste of money”
“Not compatible with Tesla Model Y extended range”