Hey KFUNK I just picked up an 83 RX-50 at a garage sale. Can u tell me what the battery model number is? Do u know if it is OK to run it without the batttery? The bike only has 970miles on it. Got it for $300, in great shape except some dick let some white paint overspray get on it. Love this group, I raced FZR400's for a few years. Thanks for your time!!