My battery has NEVER shown 100% charge. I've only owned the bike for a couple of months and it was a demo model (100kms on the odo when I bought it) but the battery never charges to 100%. Is this normal? I didn't think anything of it at first as I couldn't tell if I had just missed it being 100% and then noticed it when riding but have since checked and even when fully charged all night it only shows 98%. Not sure if it shows 100% after 3 hours of charging and then drops overnight, I haven't watched it like a hawk. It also seems to drop very quickly, losing 4-6% within the first 0.5-1km. Should I go back to the dealer?