Find the right home battery

Choose backup hours and appliances. The calculator checks energy, power, surge, voltage, current and BMS compatibility for our 2.5 kWh, 5 kWh and 16 kWh batteries.

1. Choose your mode

You can switch later. Your entries are kept.

2. Home and backup requirements

Tell us about the home and how long the backup must last.

Home type Location Supply phase Typical power-cut duration (hours)For reference in the report. Desired backup duration (hours)Between 0.25 and 48 hours. Backup priorityChanging this pre-selects appliances in the next step.

3. Appliance load builder

Tick the appliances that must run during an outage. Wattages are estimates; edit them if you know the real values.

4. Existing system and compatibility

Batteries need a compatible inverter. Enter what you know; missing data is flagged for verification, never assumed.

Existing or proposed inverter Inverter database

Brand and model Rated output power (kW), if known Battery voltage min (V) Battery voltage max (V) LFP chemistry supported? Max charge current (A) Max discharge current (A) Surge rating (kW) Surge duration (s) Supported BMS protocols

Inverter / discharge-path efficiency (%)Assumption, applied once. Default 90 matches our sales material.

5. Solar scenario

Existing solar and new solar are handled separately. Results here are preliminary, not a validated design.

Scenario

Existing solar capacity (kWp) Solar inverter type Grid connection Intended battery use

Proposed PV capacity (kWp)Or enter roof area below. Usable roof area (m²) Average daytime load (kW) Daytime hours Average night load (kW) Night hours Grid availability Roof area per kWp (m²)Assumption.

Assumed solar yield (kWh per kWp per day)Assumption incl. system losses. Depends on location; default 4.

Preliminary estimate only. Final system design needs installer review and manufacturer datasheet confirmation.

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Find the right home battery

1. Choose your mode

Homeowner

Installer / Engineer

2. Home and backup requirements

3. Appliance load builder

4. Existing system and compatibility

5. Solar scenario

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