The vehicle battery pack exchange system herein described charges renters for the time use interval, the energy needed to recharge the battery pack, and the battery wear their use has caused. Data on battery wear accelerating stress parameters such as current, voltage, temperature, and state of charge is collected for battery packs rented to vehicle users. Wear rates are estimated from the collected data. Drivers are displayed information to adapt their driving to battery wear rates. Renters are charged for battery pack usage time, energy supplied by the rental station, and battery wear providing battery owners a secure return on their investment. This system accommodates both short term and sustained long term rentals. Long term rental of one or more battery pack modules for local use gives convenience and low costs while short term rentals of multiple modules provide unlimited range via swapping exhausted packs for recharged units during extended travel. User travel plans and preferences are employed to automatically provide users with suggestions for which battery modules to return and how many to replace during extended travel battery exchanges.