Message #1 Posted by Matt Agajanian on 15 Mar 2012, 12:26 p.m.
Yesterday, I just got my HP-67. BUT, as excited as I was, I took for granted that batteries were already in the calc. So, I plugged in recharger. Figuring that the batteries needed a full charge cycle, I left the 67 charging for 14 hours. While it was charging, I was able to try some calculations.
Well, this morning, I unplugged the 67. I turned it back on and NO display. So, I went to look at the batteries! WHOA! No batteries were in the 67 to begin with. YIKES!! And then I flashed back to the message in the manual stating that plugging in the calc with no batteries installed could damage the 67. And, I'd left it charging for 14 hours!! OUCH!
But, when I put in a battery pack, the 67 behaved and I did see the red 'low battery' light. So, I am now charging the 67. As it did from yesterday, the 67 operates with the charger plugged in WITH the batteries inside.
BUT, could that 14 hour mishap have tormented my 67? Please let me know.
Edited: 15 Mar 2012, 12:27 p.m.