Post Reply 
HP30B retunrning to "default values"
05-07-2015, 01:34 PM (This post was last modified: 05-07-2015 02:49 PM by Katie Wasserman.)
Post: #2
RE: HP30B retunrning to "default values"
The low battery warning does not work in these machines and your 30b will resent when the battery voltage gets too low. This is unfortunately a very common occurrence with all the new HP ARM-based calculators. The power supply design is just horrible, they've put 2 CR2032 cells in parallel instead of using them blocking diodes so that one cell won't drain the other when it's exhausted or shorted.

I recommend that you buy a good supply of 2032 cells, they're under $0.25 on Amazon and elsewhere and change them often and carefully. "Carefully" because it's pretty easy to short the battery contacts when inserting a new cells and you'll reset the calculator.


Visit this user's website Find all posts by this user
Quote this message in a reply
Post Reply 

Messages In This Thread
RE: HP30B retunrning to "default values" - Katie Wasserman - 05-07-2015 01:34 PM

User(s) browsing this thread: 1 Guest(s)