HP48GX RAM card design

[wan]

(01-21-2021 04:12 PM)Marco Polo Wrote:  Are you sure that 20 seconds are enough?
Just as an example, pulling-out the batteries from my Cynox cards requires some effort and doing it within 20 seconds is quite challenging

The Cynox card covers the back half of the battery, so you can only pinch the front half of the battery to remove it. This makes it difficult to remove the battery.

My battery holder is bar shaped and the back half of the battery is exposed, so it can be easily pushed out. With a fresh battery ready to go, it takes less than 10 seconds to swap the batteries.