When I tried to start one of my bikes upon returning to town, it acted very dead. No horn , no click, just crazy gauges jumping around. I checked the battery with a volt meter, 12.6 v . It had been on a BatteryTender since I left. The bike would do nothing more than a gauge sweep. I put a “smart” charger on it. I was going to jumpstart it, but the built in tester said the battery was fully charged.ive now spent a few hours on it and replaced the solenoid, since everything flows through it and I can’t find anything definitive. Nothing. Then I jump the solenoid posts. Nothing. Then I jump from battery terminal to starter cable. Nothing. I put a different smart charger on the battery, it now reads “Defective “ and won’t accept a charge. Voltage reads 12.8 . It holds voltage all night. I am an electrical imbecile and I can’t understand this discrepancy . Would someone please tell me what I’m seeing here ? I’ve ordered a new battery.