I bought a used Juiced CCX supposedly about 1 1/2 years old. When I charge the 52v battery the charger light goes green (fully charged) at 53.7v. Now I saw on this site a chart that showed a 52v battery is fully charged at 58.8 and I was hoping to charge it to 55.4 which is 80%. Am I correct to assume the cells are getting old and this is what happens to lithium batteries when they degrade. Any advise on how to restore or am I a candidate for a new or rebuilt battery? Thanks