Tools and calculators
Work it out before you buy. Each tool shows the formulae and assumptions, and we have checked the results against examples from the documentation and Victron’s official calculator.
Where to start
When designing an installation from scratch, it is best to calculate in this order — the result of each step will be useful in the next one.
11 calculators and decoders
Energy and storageconsumption and panels, battery bank, home energy storage
Energy balance: battery and panels
Daily consumption, battery capacity and panel power in each month — with solar radiation data for Polish cities.
Open
Battery bank
System voltage and battery → how many in series and parallel, bank capacity and kWh, and Victron Lithium connection limits and rules.
Open
Home energy storage (ESS)
Annual consumption and panel power → self-consumption and load coverage with a 0–20 kWh storage system, plus a sensible capacity — using PVGIS data for Poland.
OpenDevice selectionMPPT solar charge controller for panels, inverter, DC-DC charger from alternator
MPPT solar charge controller selection calculator
Voc in frost, short-circuit current and panel power — which SmartSolar and MPPT RS controllers suit your array.
Open
Inverter selection
230 V loads operating together → continuous and peak power, 12/24/48 V voltage and the smallest matching Victron model.
Open
Charging from the alternator
Alternator current and house battery → safe charging current, Orion XS, Orion-Tr Smart or Buck-Boost model, and Ah replenished while driving.
OpenCharging, current and cablescharging time, campsite current limit, cable cross-sections and fuses
DC cable cross-section and fuse
DC cable cross-section based on voltage drop and fuse selection rule according to “Wiring Unlimited”.
Open
Battery charging time
How long it will take to charge a LiFePO4 or lead-acid battery from a charger with a given current — bulk phase and time to 100%.
Open
Campsite current limit
Campsite hook-up protection → MultiPlus input current limit, power from the hook-up and from PowerAssist, battery charging from the surplus.
Open
