Anyone know how long the old BP-945s last in the A1 approximately, in particular in relation to the 950 and 970 packs?

Thanks.

I'm curious about this too, as I use two of them!

The manual shows typical recording time as:

BP-945 = 145 min
BP-950G = 205 min

I am using a generic 945 with mine as well as the 950. I have not timed either one, but can say that they both last a long time.