It's been a LONG time since I had to replace one of those batteries in an HP48 TDS one meg card.
Where on earth do I find one of those tiny little batteries?
What is the cell number or model is it? I betchya could find it on Amazon. I've never had to replace the battery on my TDS 512 card. Still going after 13 years.
The cards have batteries in them? Huh, never knew...
I bought some several years ago at Walmart and it was just a typical Eveready type battery. If I remember correctly, it was about the size of a nickel and thin as a wafer.
I use Duracell 2016 coin cell batteries in mine, and I get them at Wal-Mart.
Just the data storage cards.
Energizer 2016 came in my storage card, still there.
I upgraded to 1mb and 2mb cards that do not have a battery.
I am surprised that Wally-World even carries those batteries. Must be a Super Center...
I had to replace mine just recently, found it at Radio Shack.
The batteries for the RAM cards are Lithium Ion CR-2016 and are sold at many drugstores in addition to the places mentioned above.
A little note: if you care about the data that may still be on the card, change the battery with it in the calculator and with the calculator on.
Another little note: upon examination, you'll be tempted to believe the little switch on the top edge of the card is a release for the battery clip. It has nothing to do with the battery at all. It is the "Write-protect" switch for the card. Move it and you cannot save any new data to the card.