How is the power of large battery packs rated?

The power of large battery packs is typically rated in terms of voltage (V) and capacity (Ah or ampere-hours). The power output can be calculated using the formula: Power (W) = Voltage (V) x Current (I), where current is derived from the capacity rating. Additionally, the energy capacity is often expressed in watt-hours (Wh), which combines both voltage and capacity to indicate how much energy the battery can store and deliver over time.