Button batteries, also called button cell, is a smaller dimension as the button battery, in general a larger diameter, thinner.
Button batteries are common charging and not charging the two kinds, including rechargeable 3.6V rechargeable lithium-ion button cell (LIR Series LIR1220, etc.), 3V rechargeable lithium-ion button cell (ML or VL series); not charging including 3V lithium button battery (CR series) and 1.5V alkaline button battery (LR and SR series).
Button batteries are more common for a computer motherboard's CMOS battery, type CR2032, used electronic dictionary inside the CR2025, used for electronic table surface CR2016 or SR44, SR626 and so on.