We have a 2013 Nissan Leaf. It was purchased used. When we got it, we could travel about 60 miles before needing to recharge. After a couple years, the distance we could travel dropped to 27 miles. We took it to the local Nissan dealership. They had it for a couple weeks. They said the diagnostics showed the batteries were good. We got it back and it still only goes about 27 miles per charge. Does anyone know what the problem might be?