question about ram card without battery

[Joe Horn]

(01-30-2023 01:00 PM)hpmin48gx Wrote:  ... does that mean that even with the calculator turned off, the card would be consuming the battery ...

The card should not draw any current from the AAA batteries in the calculator when the calculator is turned off. The card only draws power from the AAA batteries when the calculator is turned on. If the card draws a lot of power when recharging, and doesn't stay charged for long, I'd conclude that its permanent rechargeable battery is no longer rechargeable and the card is effectively dead.