[Dave Moll]

For comparison purposes, here are the innards of a B126 alongside those of a PP3. Comparison may not be simple, owing to the different shape (B126 cells have larger cross-section but are thinner), but the B126 cells appear subjectively to be marginally larger than the PP3 ones.

edit: I hope that the B126 cells are sufficiently visible inside the plastic bag from which I am reluctant to remove them.