Update 4/10/2018:  The battery still has the sides caved in a large amount.  In the last 1.5 years, this battery has seen only than 45 minutes of actual use since the battery barely powers the truck, and Fisher Price has repeatedly ignored my attempts to contact them.  It is topped up once a month with a Noco 6v charger.  In the future I will avoid Fisher Price/Power Wheels ride on toys completely and advice friends and family to do the same.