15 years to old battery. Got a new one

[Sunday Rider]

OK, since we’re discussing batteries, I have the 3 year old Duracell AGM in the 94- fires up fine all the time (and on the voltmeter is at 13.9-14.1V when bike is running, but I sometimes see resting voltage at 11.4V (when it’s been sitting NOT on the battery tender which I do use to top it off from time to time). Is it time to replace it?

I got back from a ride yesterday and the voltage was 12.90 with key in off position. I checked this morning and it is still at 12.9 with no battery tender attached. I always put the trickle charger on between rides.
This battery is only a few weeks old.

EDIT: With key on it drops to 12.05v

 

[Erdoc48]

I just checked the 94 today…12.6V off the charger for at least a week and with the key on, 11.8V, so for now at least, I think I’m good. If I start getting lower voltages with time, I’ll get a new battery