How Long Will a Portable Power Station Run? (UK Runtime Guide 2025)

⏳ How Long Will a Portable Power Station Run? (UK Runtime Guide 2025)

Portable power stations have become essential in the UK for staying connected during power cuts, winter storms and off-grid use. This guide explains exactly how long your Wi-Fi, lighting, laptop, fridge and other household devices will run on different Bluetti models, using realistic UK wattages and real-world examples.

🔍 What Determines Runtime?

Runtime depends on four factors:

  • Battery capacity (Wh) — the total stored energy
  • Device wattage (W) — how much power the device uses
  • Inverter efficiency — usually 85–90%
  • Real-world usage — cycling loads and standby behaviour

The higher the wattage of the device, the faster the power station will drain.

👉 Use the UK Backup Power Calculator

🧮 Simple Runtime Formula

Runtime (hours) = Battery Wh × 0.85 ÷ Device Watts

Example: A 10W Wi-Fi router on a 600Wh power station:

600 × 0.85 ÷ 10 = ~51 hours

Real-world runtime is usually lower due to inverter load, voltage drops and device cycling.

📊 Typical UK Wattages

  • Wi-Fi Router: 8–12W
  • LED Lamp: 5–10W
  • Laptop: 40–65W
  • Television (32–50”): 40–90W
  • Fridge (under-counter): 60–120W + cycling
  • Phone Charging: 5–20W

Wattage is usually printed on the device label or plug-in charger/adaptor.

📈 Runtime Examples Using Popular Models

🔹 Bluetti EB3A (268Wh)

  • Wi-Fi router → ~6–10 hours
  • Phone charging → 10–20 charges
  • LED lamp → ~20 hours

👉 Shop Bluetti EB3A

🔹 Bluetti AC180P (1440Wh)

  • Wi-Fi + lights + laptop → 12–30 hours
  • Television → 10–20 hours
  • Fridge (cycling) → 8–20 hours

👉 Shop Bluetti AC180P

🔹 Bluetti AC300 (Inverter Module + Battery)

The AC300 becomes a powerful backup solution when paired with a compatible battery.

  • Heating controls + lighting + Wi-Fi → 12–36 hours
  • Fridge + lighting + router → 12–48 hours (battery-dependent)
  • Fully expandable for multi-day outages

Note: Requires a compatible battery — sold separately.

👉 Shop Bluetti AC300 Inverter Module

🏡 UK Home Runtime Scenarios

Scenario Recommended Model Runtime
Wi-Fi + phone charging EB3A 6–10 hours
Router, lighting, laptop AC180P 12–30 hours
Fridge + router + lighting AC300 (modular) 12–48 hours
Garden office or shed AC60P / AC200P L 5–20 hours

📦 Best Emergency Kits for UK Power Cuts

For quick protection during storms, see our ready-made UK emergency power kits:

👉 Explore Emergency Kits

👉 Shop Best Sellers

✔ Final Recommendation

Runtime depends on the size of the power station, the wattage of your devices and how long you want to stay powered during a UK outage. For accurate results, use our calculator below — and choose a model suited to your home, usage and storm risk.

👉 Try the Backup Power Calculator

👉 Shop All Portable Power Stations

🔗 Related UK Backup Power Guides

⚡ Choose a Power Station by Runtime