u/Outrageous-Radio-850

My 2014 Electra Glide Ultra Limited had been buried in my garage behind some other projects for about a year without a trickle charger attached. I had to get it unburied to take it for an annual vehicle inspection in my state and had to replace the battery. After replacing the battery, it keeps beeping at me (3 beeps, pause a few seconds, 3 beeps). I have read it is the possibly the alarm battery that has died. Does anyone know if that is the case and where it maybe located? I am having trouble finding the location online. I have already changed the FOB battery.