I have 2 batteries for my 2019 Rover. Very few miles on the bike , this is my first charge. One battery was at about 60% , the other about 85% when put away. Both haven't been used for at least 6 weeks. I charged both last night , as I finally have time to play with the bike , going big , 60 mile round trip. The batteries took what I thought , a long time to charge. Almost 6 hours for the 60% one , and close to 3 hours for the 85% one. Is this normal? I'm thinking that the batteries must loose charge in storage and the percentages dropped further than their original numbers , is it that much as to extend the charge times so much?