I modified 2 bikes. One with BBS02 and other with BBSHD. The Jumbo Shark 48 volt, 24.5ah battery fully charges and the lights on the side of the battery light up and show a full charge. However on both the DPC18 or C500 displays, battery charge never shows higher than 68 %. On the 52 volt, 6ah saddle bag battery, it shows a charge of 100% on either display After a full charge. Am I doing something wrong with the Jumbo Shark battery or is that just the way it is? You can’t insult me. I’m a newbie to this hobby.