TECHNOLOGY FOCUS - ELECTRONICS - Preferred Method: In the method for providing notice of battery pack availability, the indication of the capability of the battery pack to sink or source an amount of current is in response to a state of charge of the battery pack and a temperature of the battery pack. Indication of the capability of the battery pack to sink or source an amount of current is related to a continuous battery current capability and a transient battery current capability. Transient battery current capability is a 10 second current capability. The battery pack has a sourcing current capability that is greater than a sinking current capability when the battery pack is at substantially a same temperature when sourcing and sinking current. Indication of the capability of the battery pack to sink or source and amount of current is supplied by a battery pack controller to a vehicle controller via a CAN link. The indication of the capability of the battery pack to sink or source an available amount of current is related to an amount of current sensed entering or exiting the battery pack. Providing notice of battery pack availability comprises sensing current entering or exiting a battery pack; providing an indication of an available current limit for a battery pack in response to the sensed current; and providing an indication of a capability of the battery pack to sink or source the sensed amount of current at the available current limit, the indication of the capability of the battery pack to sink the sensed amount of current reduced as a state of charge of the battery pack increases, the indication of the capability of the battery pack to source the amount of current increased as a state of charge of the battery pack increases. The current is sensed by a first module and communicated to a second module, and where the second module communicates the indication of the capability of the battery pack to a vehicle controller via a CAN link. The method further comprises adjusting the indication of the capability of the battery pack to sink or source an amount of current in response to a state of charge of the battery pack. The method further comprises adjusting the indication of the capability of the battery pack to sink or source an amount of available current in response to a temperature of the battery pack. The indication of the capability of the battery pack to sink or source an amount of current is adjusted by a predetermined amount during a battery pack shutdown. The indication of the capability of the battery pack to sink or source an amount of current is related to a continuous battery current capability and a transient battery current capability. The available current limit is reduced at a prescribed rate when the indication of the capability of the battery pack to sink or source an amount of current is substantially zero. Preferred System: The second module is a battery control module, and where the battery control module is electrically coupled to monitor and balancing modules via the communication link. The second controller includes further instructions for filtering the battery pack current data. The second controller includes further instructions for adjusting the indication of the capability of the battery pack to sink or source the amount of current in response to a temperature of the battery pack. The second controller includes further instructions for adjusting the indication of the capability of the battery pack to sink or source the amount of current in response to a state of charge of the battery pack. The indication of the capability of the battery pack to sink an amount of current increases as a state of charge of the battery pack decreases.