hp41cv memory lost

[ElectroDuende]

(02-09-2016 11:06 AM)damaltor Wrote:  I removed the battery pack, and had none in there while building a new rechargeable pack. I left the calculator sitting over the weekend without power supply and without battery, and when i wanted to put the finished battery pack in i remember that i definitely pressed on a lot of keys before inserting the new pack. The calculator started without memory loss and all programs were still there.

As far as you don't press ON, it will keep your data for a long time.