[V8] autolock key batteries

[Ed Kellock]

What is the correct battery for the auto lock (and light) function of the key?

My key has 4 batteries in it and it works intermittently.  I replaced
them all with new, but I'm not sure I have the right battery.  Because
of the shape/configuration of the negative side of the battery, I'm
not sure it's making good contact inside the key.

The p/n according to etka is N10252201, but I have no luck googling that.

Thanks!
Ed