Soooo, battery. Dead after 3 weeks of no use. I suspect I might have a parasitic power draw.
Asked ChatGPT how to detect it, here is what it said:
"Discovering the cause of a parasitic power draw from a motorcycle battery involves systematically checking the electrical system for components or circuits that are drawing current even when the motorcycle is off. Here’s how you can diagnose it:
Tools You’ll Need
• Multimeter (with a DC amp setting)
• Basic tools for accessing fuses and electrical connections
Steps to Diagnose the Issue
• Set your multimeter to measure DC amps.
• Disconnect the negative terminal of the battery.
• Connect the multimeter in series: one lead to the negative battery terminal and the other to the disconnected negative cable.
• Observe the current reading on the multimeter:
• Typical parasitic draw should be less than
50 mA (0.05 amps).
• A higher reading indicates excessive draw".
So now I am a ChatGPT-Certified mechanic in addition to a YouTube-Certified mechanic
Anyways, will do this next time I get to the bike. It is stored for the Winter some 3 hours' drive from where I live.
In the meantime, I have bought the NOCO. It's tiny, light and doesn't break the bank (EUR 138 on Amazon).