OP
OP
Raising this thread from the dead-letter file to post a final update since I sold my 2006 ST1300A a couple months ago. I installed the last PC545 battery on 3/3/18 and it was still going strong at the time of sale after 6 years of use. I appreciate the advice I received to purchase the BatteryMINDer desulfating charger because it seems to have made the PC545 battery last longer.