Domonstration of how much regenerative braking adds power back into the battery when driving down steep hills. I was blown away at just how efficient Regen Braking is and how much power it put back into the battery. Really useful information for anyone planning a trip over mountain ranges. Battery consumption can increase 3 fold climbing steep grades and thus range can decrease to 1/3. Power will be restored to battery on the descent, but better to sure you have enough % battery to make the climb up.