It's still a matter of the mA h capacity, rechargable or not. Just that you might not know it if they're non-rechargeable.
As RZ says, it's about a factor 2, maybe slightly more, but it'll vary quite a bit between different types & makes and what you get in practice may be somewhat different than theory, because the capacities are dependent on discharge rate, and smaller batteries may be unhappier at higher discharge rates