02-01-2022, 09:04 AM
Gone i would measure the system voltage, go for a ride and leave the engine running whilst measuring the voltage with 2000 rpm.
Did this on all my bikes and the cb1100 was exactly at 13.8 volt which is perfect, more than 14 volts charges faster but shortens the lifespan especially on long trips.
You also mentioned yours is mounted under the tank, is that not a hot place? batteries don't last long over 25 deg C.
At least you proved it was the battery and got the most out of it.
Did this on all my bikes and the cb1100 was exactly at 13.8 volt which is perfect, more than 14 volts charges faster but shortens the lifespan especially on long trips.
You also mentioned yours is mounted under the tank, is that not a hot place? batteries don't last long over 25 deg C.
At least you proved it was the battery and got the most out of it.