Just for information, 2 days ago friend try to start bike, key fob no good so I change battery, now key fob good, then try to start bike, nothing comes, so I try battery booster, nothing comes, so I charge battery overnight, check volt 12.6 ok, try to start nothing comes, check volt now 11.7 after 1 try start, try battery booster nothing comes, so story says when battery is dead even battery booster will not start bike, today new battery comes fit on bike, and bike start first time.