bess
SoH
Also known as: State of Health
A battery's current maximum capacity expressed as a percentage of its original rated capacity.
State of Health (SoH) measures a battery's current usable capacity relative to its rated original capacity. SoH degrades over cycles and time. LFP BESS warranties typically guarantee SoH above 70–80% at end-of-warranty (often 10 years or specified cycle count).