I was thinking about this too.. I replaced my group 24 with a 27 and since I got the larger battery I have not had the lights flash. Had it happen 1 time and that was because I left my bluetooth OBD reader plugged in overnight which was probably drawing from battery.
Are you talking if the CDL light is flashing? That won't be a problem as it usually means its not engaged if its on first start. It might be annoying and you can drive 10mins or so to make sure everything is warmed up, then cycle the engine off/on again to get the light to go away. I've got...