A postal jeep and a commercial delivery van were evaluated. Energy data from operation over a test loop and various grades is presented for zero to 15 mph start/stop and 30 mph range runs. Test results are summarized in a graph for prediction of remaining miles based on route terrain. Jeep regenerative braking is discussed. A high power electrical simulator was used to reproduce a mountainous terrain load profile. The simulator was programmed with magnetic tapes made up from actual field recordings. This verified calculations, gave additional battery information and eliminated the need for a mountainous terrain test track.