Types
See en.wikipedia.org/wiki/List_of_battery_sizes for more detail
AAA
IEC standard -
LR03 (alkaline)
R03 (carbon-zinc)
FR03 (LiFeS2)
HR03 (NiMH)
KR03 (NiCd)
ZR03 (NiOOH)
AA
IEC standards -
LR6 (alkaline)
R6 (carbon-zinc)
FR6 (LiFeS2)
HR6 (NiMH)
KR6 (NiCd)
ZR6 (NiOOH)
PP
IEC standards - 6LR61 (alkaline)
6LP3146 (alkaline)
6F22 (carbon-zinc)
6KR61 (NiCd)
6HR61 (NiMH)
CR2032
coin shape 3 volt
CR2025
coin shape 3 volt