Low Voltage @ Startup - 2013 225 Pro XS S/N: 1B965395

[jbh3]

Recently this engine has begun to have a significant voltage drop at startup. When the key switch is moved to "start" the voltage on the analog gauge on the dash drops to ~10V momentarily and triggers, what I am assuming to be a low voltage alarm. The engine starts before you can release the key and runs fine. The keyup beep/alarm/engine start sequence happens so quickly I didn't notice the second beep initially. Voltage when running appears to be normal @ 13-14V. Voltage drop when trimming is negligible. Battery is a fresh (first trip out today), fully charged group 31 X2 AGM from Batteries Plus and is a replacement for an identical battery that was in service 4.5 years. New battery did not correct the issue. Engine is due for annual service and will be contacting my shop asap. Thanks for any insight.