5 years after going on sale, LEAF battery packs are WAY more reliable than gasoline and diesel engines : TreeHugger by Greg Lougheed | Mar 24, 2015 | News 5 years after going on sale, LEAF battery packs are WAY more reliable than gasoline and diesel engines : TreeHugger. Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Click to email a link to a friend (Opens in new window) Email Click to print (Opens in new window) Print