anker 521 portable power station
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Okay$188.53avg listing price — sweet spot $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay2.5%search→purchase rate — share of searches ending in a sale
Returns
Okay5.0%return rate — above 5% kills the launch gate
Review moat
Bad5,333.33avg incumbent reviews — the moat a new listing must climb
Growth
Bad-10.3%90-day search growth — must beat 0% to launch
Market size
Bad$68K$68K/yr · 15K searches
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Price range
Bad$158.40–$227.13cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, anker 521 portable power station is a $68K/yr Amazon United States market (15K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Nov. Verdict: Skip it — 18/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
anker 521 portable power station market data
- Units sold / yr
- 250–500
- avg 100–250/product
- Revenue / yr
- $47K–$94K
- units × avg price
- Conversion rate
- 2.5%
- Avg BSR
- #27
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 67%
- Out of stock
- 0.0%
- Avg brand age
- 29 months
- Avg seller age
- 204 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
2 rising
Sellers
6
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- Anker95%
- Jackery5%
Demand & seasonality
Weekly Amazon search volume, last 87 weeks — -10.3% search growth over the last 90 days.Peak months: Jan, Nov · busiest ÷ quietest = 2.1×
Top anker 521 portable power station 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 3 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Anker 521 Portable Power Station Upgraded with LiFePO4 Battery 256Wh 6-Port PowerHouse 300W (Peak 600W) Solar Generator (Solar Panel Optional) 2 AC Outlets 60W USB-C PD Output Outdoor Generator
Anker$158.404.4★3,112 rev
Anker Portable Power Station SOLIX C300 288Wh LiFePO4 Backup Battery 300W Solar Generator 140W Two-Way Fast Charging for Camping Hunting Travel Blackout & Emergencies (Solar Panel Optional)
Anker$227.134.6★1,797 rev
Jackery Portable Power Station Explorer 300 292Wh Backup LiFePO4 Battery Solar Generator for Outdoors Camping Travel Hunting Blackout (Solar Panel Optional)
Jackery$180.074.6★11,091 rev
Newest
by launch dateAnker Portable Power Station SOLIX C300 288Wh LiFePO4 Backup Battery 300W Solar Generator 140W Two-Way Fast Charging for Camping Hunting Travel Blackout & Emergencies (Solar Panel Optional)
Anker$227.131,797 rev
Anker 521 Portable Power Station Upgraded with LiFePO4 Battery 256Wh 6-Port PowerHouse 300W (Peak 600W) Solar Generator (Solar Panel Optional) 2 AC Outlets 60W USB-C PD Output Outdoor Generator
Anker$158.403,112 rev
Jackery Portable Power Station Explorer 300 292Wh Backup LiFePO4 Battery Solar Generator for Outdoors Camping Travel Hunting Blackout (Solar Panel Optional)
Jackery$180.0711,091 rev
Trending
90-day click momentumAnker Portable Power Station SOLIX C300 288Wh LiFePO4 Backup Battery 300W Solar Generator 140W Two-Way Fast Charging for Camping Hunting Travel Blackout & Emergencies (Solar Panel Optional)
Anker$227.134.6★
Anker 521 Portable Power Station Upgraded with LiFePO4 Battery 256Wh 6-Port PowerHouse 300W (Peak 600W) Solar Generator (Solar Panel Optional) 2 AC Outlets 60W USB-C PD Output Outdoor Generator
Anker$158.404.4★
Jackery Portable Power Station Explorer 300 292Wh Backup LiFePO4 Battery Solar Generator for Outdoors Camping Travel Hunting Blackout (Solar Panel Optional)
Jackery$180.074.6★
What buyers say about anker 521 portable power station
What buyers praise and complain about, mined from review topics.What buyers love
“holds charge well”
“Good quality”
“portable and practical”
“Worth the money”
“long battery life”
“It really comes in handy”
“Seems sturdy”
“Not too heavy”
“Product as advertised”
“Very durable”
What buyers complain about
“slow charging”
“Easy to broken”
“Power Cord Does Not Fit”
“Dont work”
“Not worth the price”
“The battery life is somewhat unsure though”
“Poor manufacturing quality”
“It cant power anything with a heating element”
“Dirty power, dirty marketing dont purchase”
“Not strong enough to power a modem or coffee maker”
Top return reasons
Common questions
- Is anker 521 portable power station profitable to sell on Amazon United States?
- The niche generates $68K/yr across 3 tracked products. 90-day search growth is -10.3%. Flapen's verdict: Skip it (18/100).
- How competitive is the anker 521 portable power station niche?
- 2 brands and 6 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in anker 521 portable power station?
- Top complaints mined from reviews: Charging, Durability, Size-Overall. The return rate is 5.0%.
- When does demand for anker 521 portable power station peak?
- Demand peaks in Jan–Nov; the busiest month runs 2.1× the quietest.
- What does it cost to enter the anker 521 portable power station niche?
- Listings span $158.40–$227.13; the average listing price is $188.53 (sweet spot $15–$100). The average incumbent carries 5,333 reviews — the moat a new listing must climb.