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FLINTREADY / PHILIPPINES / FREE HOUSEHOLD GUIDES
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Run Diagnostic

PHILIPPINES READINESS · REVIEWED OCTOBER 12, 2026

Philippines brownout power calculator.

How much energy do your essentials need? Start with a fan, laptop, phone, and internet equipment. The numbers below are editable examples, not measured Philippine appliance averages.

Calculate my essentialsChoose the backup type

Build one outage plan.

Enter watts, total hours during this outage, and quantity. If one box combines your router and fiber terminal, use one row so you do not count it twice. For variable loads, use a measured average for the intended activity.

UseEquipmentWattsHours/outageQuantityEnergy
Electric fan—
Wi-Fi router—
Fiber terminal / ONT—
Laptop charging—
Phone charging—
Custom device—

Usable share allows for energy you keep in reserve. Delivery efficiency allows for conversion and other losses. Both are planning assumptions; replace them when you have appropriate measured or manufacturer information.

Energy for this outage—Sum of selected equipment
Capacity estimate—Advertised Wh before assumptions
Simultaneous running load—Excludes startup surge
—

This assumes all selected devices run continuously together at the entered watts. It does not follow the different hours in your outage plan, and it is not a runtime guarantee.

The math, without a product sales pitch.

Outage energy = sum of watts × hours × quantity. Capacity estimate = outage energy ÷ usable share ÷ delivery efficiency. Compare-battery runtime = advertised Wh × usable share × delivery efficiency ÷ simultaneous running watts.

With the starting example, the fan uses 210 Wh, router 72 Wh, fiber terminal 48 Wh, laptop 135 Wh, and phone 20 Wh: 485 Wh total. At 90% usable share and 85% efficiency, the capacity estimate is about 634 Wh. The simultaneous running load is 110 W; a 1,000 Wh battery gives an illustrative 7.0 hours with every selected load running continuously.

Capacity does not establish compatibility.

  • Check the exact unit’s continuous output, startup capability, charging input, connectors, and appliance requirements.
  • Meralco specifies 230V nominal residential service. Confirm the service and equipment ratings for your location; a plug adapter does not convert voltage.
  • A powered router cannot guarantee internet if the provider’s network or local infrastructure is down. Plan a separate communication fallback.
  • Refrigerators, air conditioners, medical devices, and whole-home wiring need separate assessment. This calculator does not establish their suitability.
  • Use equipment within its manual’s temperature and moisture limits. Follow local building rules and evacuation instructions.

No inputs are stored or sent by this calculator. General site analytics, if consented to, are separate from your equipment values.

Primary sources and next step.

Compare mini UPS, conventional UPS, and portable power stations →