What is the difference between kW and kWh?
kW describes power; kWh describes energy over time. A steady 2 kW load for 4 hours needs 8 kWh, before losses, reserve and battery discharge limits.
OAKEN / KNOWLEDGE
Start with your actual needs, then review capacity, compatibility and model evidence.
kW describes power; kWh describes energy over time. A steady 2 kW load for 4 hours needs 8 kWh, before losses, reserve and battery discharge limits.
Read power alongside physical dimensions, usable space and electrical data. Larger modules may fit in fewer positions on a roof. Enter site and module dimensions plus edge clearance in the studio; modules must not be shrunk to fit.
Total power alone is not enough. Check cold string voltage, hot MPPT range and input current against exact datasheets. Never exceed the inverter DC voltage limit. Missing data is not compatibility approval.
Panels alone do not guarantee backup. A backup design must address island operation, safe grid isolation, essential-load power and stored energy. Runtime depends on demand and usable energy.
Request the exact model code, version-specific datasheet, dimensions, weight, warranty terms, installation instructions and application-relevant evidence. Confirm OAKEN catalogue values against the final model; a power range is not certification or confirmed stock.