i purchased my BA II plus professional calculator in 2010 but i only started using 4months ago. do you think i should still replace the battery at least a month to the exam? (december 2013 level 1)
Depends on how much you abuse that thing. I usually replace the battery a week before the the exam. Also, be smart… don’t throw away the old battery. Take it with you in the exam center as a spare :).
They’re easy to pop out, so just bring a spare. And make sure yu know hoe to change the settings - on older models, it went back to factory defults.
+1 to this.
I have heard that batteries have a 1500-hour life. I think I studied for about 1,000 hours, and used my calculator for probably less than a quarter of that.
But I still changed the batteries a week prior.