What does capacity mean?
Capacity is the US IRA §30D battery metric for how much electricity a clean-vehicle battery can store, expressed in kilowatt hours.
capacity
A regulatory term referring to with respect to any battery, the quantity of electricity which the battery is capable of storing.
1 official sourcessingle_source
Official definitions by source
US IRA §30D
26 U.S.C. § 30D - Clean Vehicle Credit
with respect to any battery, the quantity of electricity which the battery is capable of storing, expressed in kilowatt hours, as measured from a 100 percent state of charge to a 0 percent state of charge.
Reference: Section 30D(d)(4)
Practical application
This term matters when vehicle-credit eligibility depends on battery-size thresholds and when suppliers need consistent pack-level capacity evidence.
Minespider commentary
For Minespider, capacity is a battery-specification term that should be traceable as a measured attribute, not treated as loose product-description language.
Common confusions
- Assuming the everyday meaning of capacity is enough without checking the official source definition.
- Using capacity as a loose generic label rather than the narrower meaning used in the source text.
- Assuming capacity can be interpreted without understanding methodology, scope, or lifecycle context.