The battery mounted on your VEX smartphone no longer holds the charge? Is battery life decreasing day by day and you need to charge your VEX smartphone several times a day? A problem that unfortunately affects all smartphones! The battery of a smartphone has performance that collapses automatically with the days that pass but with Doctor Batteries, you can say goodbye to all your battery problems. Instead of always planning your charger with you, you will be able to choose the VEX smartphone battery needed to give a second life to your VEX smartphone.