How Long Does a 500W Power Station Last?
256Wh to 512Wh · 301-600W output · $189 to $449
Quick answer
A 500W power station (256-512Wh) typically lasts:
Range reflects smallest to largest battery in this class. Formula: (Wh x 0.85) / watts.
The 500W class is the best-selling tier in portable power for a reason: it is the smallest class that can run a mini-fridge. With 256-512Wh batteries and 500-600W output, these units handle everything the 300W class does plus small kitchen appliances, a TV, a box fan, and basic power-outage coverage (lights + router + phones for a full day). They weigh 12-18 lbs and fit in a car trunk.
Who is the 500W class for?
Car campers and tailgaters, apartment dwellers preparing for short outages (4-8 hours of lights + Wi-Fi + phone), van lifers with modest power needs, and outdoor vendors running small displays.
✅ Great for
⚠️ Borderline
❌ Not suitable
Runtime by Appliance
Range: 256Wh (smallest) to 512Wh (largest) in this class
Our 500W Picks
Best for Car Camping
Best balance of capacity, weight, and port variety for trunk storage
See the RIVER 2 Max 500 →Extra 5% off with code BPHUB5
Best Budget
Lowest price that still delivers reliable 500W output
Check Price on EcoFlowExtra 5% off with code BPHUB5
Best for Apartments
Most USB-C ports and quietest fan for indoor use
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All 500W Power Stations
6 models from Anker SOLIX, Bluetti, EcoFlow, Jackery, sorted by capacity
Runtime = (Wh x 0.85) / appliance watts. Prices verified April 2026.
FAQ: 500W Power Stations
3 questions specific to this wattage class
Can a 500W power station run a mini-fridge?
Yes. Mini-fridges draw 50-60W running with a 180W startup surge. Every 500W model handles that. With a 512Wh battery, expect 7-8 hours continuous, longer in practice because the compressor cycles on and off.
How long will a 500W station power a TV?
A 55″ LED TV draws about 120W. With a 512Wh battery: (512 x 0.85) / 120 = roughly 3.6 hours. A smaller 32″ TV at 50W would last over 8 hours.
Is 500W enough for a power outage?
For a short outage (4-8 hours), yes. You can keep your Wi-Fi router, phones, LED lights, and a small fan running all day. For keeping a full-size refrigerator cold, step up to 1000W.
Other wattage classes
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Specs sourced from manufacturer product catalogs. Runtime = (Wh x 0.85) / appliance watts per DOE efficiency data.
Affiliate Disclosure: BackupPowerHub earns a commission on qualifying purchases at no additional cost to you. Runtime calculations are formula-driven and not influenced by affiliate relationships.