powermax
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 6% kills the launch gate
Avg price
Good$175.23avg listing price — sweet spot $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay3.0%search→purchase rate — share of searches ending in a sale
Review moat
Okay2,947.94avg incumbent reviews — the moat a new listing must climb
Market size
Okay$166K$166K/yr · 31K searches
Competition
Bad71%top-5 click share — a locked-up shelf
Growth
Bad-3.5%90-day search growth — must beat 0% to launch
Price range
Bad$7.71–$436.02cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad100%top-5 brand share — brand-locked demand
Competition
The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.Brands
5 falling
Sellers
32
Top-5 brand share
100%
Open market
0%
- PowerMax91%
- sdanbom6%
- VAYALT2%
- Powermax1%
- KMHGD1%
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 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
PowerMax PM4 100A Power Converter 110V AC to 12V DC | 100 Amp with Built-in 4-Stage Smart Battery Charger | Reverse Polarity Overload & Thermal Protection | Ideal for RV Boat & Off-Grid Systems
PowerMax$185.804.5★706 rev
PowerMax PM3-100LK 110V to 12V DV Power Supply Converter Charger for RV 100 Amp -Grade Voltage Converter Modified SINE Wave Inverter
PowerMax$172.734.5★497 rev
PowerMax PM3-55 RV Power Converter | High-Performance 110 Volt to 12 Volt DC Power Supply Charger w/ 55 Amp Capacity | Ideal for Efficient & Reliable Power Management in Recreational Vehicles
PowerMax$130.574.6★2,348 rev
PowerMax 55 Amp RV Converter | 12V AC to DC Power Converter with Built-in 4 Stage Smart Battery Charger | Adjustable Output 13V to 16.5V Lithium Compatible | Ideal for RV Boat Car Audio PM4 55A
PowerMax$136.184.5★629 rev
PM4 100 Amp RV Power Converter - Power Converter with Built-in 4 Stage Smart Battery Charger - Multiple Capacities 100A 110V AC to 12V DC 100 Amp Battery Charger RV Power Converter Replacement
sdanbom$133.683.9★97 rev
Newest
by launch date
PM3-100LK 100 Amp RV Power Converter 110V AC to 12V DC. Replace PM4/PM3 Power Converter Smart 3-Level Charger Fit for RV Ship and Off-Grid System Lithium and Lead-Acid Batteries 5-Year Warranty
KMHGD$116.8311 rev
PowerMax PMBC Series Battery Maintainer Charger for Diagnostics ADAS Calibration Reflash and Programming | 13-16.5Vdc | On/Off Switch I Voltage Display | Handle | 15 Cable Set (100 Amp)
PowerMax$406.181 rev
VAYALT DC 12V 50A 600W Switching Power Supply 110V/220V AC to DC Converter Universal Regulated Switching 12V Power Supply for CCTV Camera System 3D Printer LED Strip Computer Project
VAYALT$35.1199 rev
PM4 100 Amp RV Power Converter - Power Converter with Built-in 4 Stage Smart Battery Charger - Multiple Capacities 100A 110V AC to 12V DC 100 Amp Battery Charger RV Power Converter Replacement
sdanbom$133.6897 rev
Powermax 24-Count AA Batteries Ultra Long Lasting Alkaline Battery 10-Year Shelf Life Reclosable Packaging
Powermax$7.7140,870 rev
Trending
90-day click momentum
PowerMax PM3-35 Power Supply | AC-DC Converter (110/120 VAC to DC 0-12 Volt 35 Amp) Battery Charger w/ 3-Stage Smart Charging Mode | Built-in Cooling Fan LED Indicator Light & Lithium Compatibility
PowerMax$107.904.5★
PowerMax PMBC-100-SE Series 12V Battery Maintainer & Charger | Ultra-Stable Power Supply <100mV | Amp and Volt Meter | 15ft 4 Awg Cables with 45 Angled Clamps | Lithium Charge Profile
PowerMax$436.024.7★
PM3-100LK 100 Amp RV Power Converter 110V AC to 12V DC. Replace PM4/PM3 Power Converter Smart 3-Level Charger Fit for RV Ship and Off-Grid System Lithium and Lead-Acid Batteries 5-Year Warranty
KMHGD$116.833.9★
VAYALT DC 12V 50A 600W Switching Power Supply 110V/220V AC to DC Converter Universal Regulated Switching 12V Power Supply for CCTV Camera System 3D Printer LED Strip Computer Project
VAYALT$35.114.4★
PowerMax Converters PPC-30-55LK | Cutting-Edge RV AC & DC Power Distribution Center | Features 30 Amp AC and 12 Volt DC Panel for in Management Recreational Vehicles | Replacement for the WF-8955
PowerMax$141.684.3★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -3.5% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Great deal”
“Great long lasting batteries”
“The quality is solid”
“Durability is good”
“Works as it should”
“Easy to use”
“Easy install”
“It fits perfectly”
“Strong and durable”
“charges the batteries efficiently without any issues”
What buyers complain about
“Bad Batteries”
“Battry died in 1 week”
“The manufacturer needs better quality control”
“Its a bit noisy”
“The rest didn't work at all”
“They dont hold a charge for the door bell for even 2 days”
“Received a used item”
“discovering lantern was very dim”
“Caught on fire”
“Definitely don't use in your house thermostat”