u/cheffg26

What needs to be changed?

2013 Ninja 650
I bought the bike last week and when I don’t ride it for 1-2 days I have trouble starting it back up. When I put the multimeter to the battery it says 12V so I’m not sure if it needs replacing but when I boost the battery, the bike starts no problem.
Does anyone know what needs to be fixed?
Also is that sound normal when I first turn the key?

u/cheffg26 — 3 days ago