PerformanceUp to date · Jan 15, 2026
Depth of Discharge (DoD)
The percentage of a battery's total capacity that is used during a discharge cycle. Most modern batteries allow 90-100% DoD.
Why It Matters
Shallower discharges (lower DoD) extend battery life but reduce usable capacity. A 13.5 kWh battery with 100% DoD provides 13.5 kWh usable; at 80% DoD, only 10.8 kWh.
Related Terms
Cycle Life
The number of complete charge-discharge cycles a battery can perform before its capacity drops below a specified threshold (typically 70-80% of original capacity).
Battery Storage
A system that stores excess solar energy for use when the sun isn't shining, providing backup power during outages.