Stacking button top and flat top 18350s

[Kathibg57]

Hi All,
does anyone know if I can stack a button top 18350 with a flat top 18350 or do they both need to be the same - either 2 button tops or 2 flat tops? (Yes, I know the potential danger of stacking them...)
thank for the help!

 

[yzer]

If the batteries are matched in every way except for the B+ contact on the battery, yes.

Flats tops can be stacked with flat tops too assuming you can use flat tops in the device.