Education and Communications How much does a Nissan Leaf battery cost? How much does a Nissan Leaf battery cost? Nissan Leaf Battery Replacement Cost According to a 2020 Greencars report, the Nissan Leaf 40 kWh battery costs $5,500 or about $137/kWh, which is right on target for the average 2020 price. Related Posts:EverStart Maxx Lead Acid Marine & RV Battery, Group Size 24DC, has been reviewed.Why are Nissan Leafs so cheap used?How much does it cost to replace the battery in a Nissan Leaf?How much does it cost to replace a 2011 Nissan Leaf battery?