BESS metrics & concepts

The battery-storage metrics that actually decide warranty standing and revenue — defined plainly, with the formulas, typical ranges, and how NuraVolt tracks each one.

State of Health (SoH)

The headline number for how much battery you have left.

Round-trip efficiency (RTE)

How much energy survives a charge-and-discharge cycle.

Depth of discharge (DoD)

How deep each cycle goes — and what it costs in lifetime.

Equivalent full cycles (EFC)

A single number that normalises messy partial cycling into full-cycle equivalents.

Rainflow counting

The fatigue-analysis method borrowed to count battery cycles correctly.

C-rate

How fast you charge or discharge, relative to capacity.

State of Charge (SoC) and the SoC window

How full the battery is — and why dwelling near full ages it.

Warranty as a data product

Turning operating data into a defensible — or contestable — warranty position.