Questions and answers

List the devices you need and the desired runtime. These determine the system, which must be installed and charged before an outage.

There is no universal answer. Duration depends on actual consumption, simultaneous load, start-up peaks, usable battery energy and system settings.

Inverter kW depends on simultaneous and peak loads; battery kWh depends on consumption and required hours. The calculator provides an initial estimate.

Theoretical runtime is kWh divided by average load in kW. Usable energy, losses and changing consumption affect actual runtime. These capacities are sizing examples.

Check refrigerator start-up demand, consumption and router power requirements. A powered router does not guarantee the provider’s network is available.

Check running and start-up power, waveform, earthing and wiring against the equipment manual. Rated watts alone are not enough.

Assess consumption, start-up demand, simultaneous loads and required runtime. Check the battery’s current limit as well as inverter power.

You define priorities. We then verify that the selected loads match the inverter and battery capability.

No. The calculator shows total selected power and estimated operating time using the chosen capacity and the assumptions shown on the page. Technical assessment is required for final selection.

Both can provide backup power, but not every inverter is an online UPS. Check transfer time, load and equipment compatibility.

A generator produces electricity from fuel; a battery supplies stored energy and needs recharging. Its suitability as a generator alternative depends on outage duration, load and charging opportunities.

It is an informal name for stored backup energy. Portable power stations and fixed inverter-battery systems differ in connection and use. MUDMI’s catalogue contains systems and components.

Transfer time depends on the model and settings. Servers, CCTV and sensitive equipment need a compatibility check; not every system offers zero interruption.

The system resumes grid operation and charges the battery according to its settings. Operation is checked against model documentation and during installation.

A system supporting grid charging can work without solar panels. Charging modes and future solar integration depend on the specific model.

Compare usable energy, current limits, temperature and charging requirements. MUDMI lists LiFePO₄ batteries; changing chemistry requires a compatibility review.

Some configurations support such integration, but compatibility must be confirmed using official documentation for the exact model and the project architecture.

Feasibility depends on the apartment’s electrical infrastructure, available space, ventilation, cable routing and selected configuration. These are checked in advance.

Battery backup does not burn fuel, but the inverter fan may be audible. Noise, ventilation and placement are assessed for the specific model.

The inverter, battery capacity, protection and installation requirements. Share your devices, runtime and location for a configuration-specific proposal.

Consultation, load assessment, system selection, delivery, professional installation, commissioning, testing and follow-up service.