Power bank
For phones and small USB devices. Start with one 20,000 mAh power bank per person and adapt to actual needs. For longer periods, plan a recharging source. Usable capacity varies.
ENERGY, MADE SIMPLE
Power. Beyond the grid.
Size your backup. From your phone to essential circuits, identify a solution compatible with your plan.
Energy at home during a power outage
Understand consumption before choosing.
Energy (Wh) = power (W) × hours. These examples are illustrative; use your appliance’s specifications. Startup, efficiency, temperature and usage change runtime.
Fridge · example: 100 W × 8 operating hours = 800 Wh/day. The compressor cycles and may need high starting power.
Router · example: 10 W × 24 h = 240 Wh/day. The provider’s network must also be operating.
LED light · example: 8 W × 5 h = 40 Wh/day. Prefer torches to candles.
Medical equipment · use actual power and operating time. Arrange a safe backup with your care team; do not rely solely on a battery estimate.
Fuel-burning camp stoves and generators: outdoors only, away from doors, windows and air intakes. Never inside homes, tents or garages, even with ventilation.
PORTUGAL
Learn more about home batteries in Portugal
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