Dive Rite Nitek Q : changing the batteries ?

[DIVEWATCHDOCTOR]

Please send me photo for this battery

I don't have a photo of the CR2440 rechargeable battery. But I remember it was a button battery, identical to the well-known standard CR2430, 3V battery, except it was 24mm in diameter (exactly as 2430) but was 4mm thick (as opposed to 3mm of the CR2430) and had a voltage of 3.7V. And I bought it over the internet. These guys still sell it:

https://www.mouser.com/c/power/batteries/coin-cell-battery/?battery%20size=CR2440&output%20voltage=3.7%20V&rechargeable%2Fnon-rechargeable=Rechargeable&srsltid=AfmBOoqUSxh9NCbx9cg-PJ63goRVYhjc7WiDx2nPR2jhZq7B53j-5acu