WA123 Systems
WAltairnano
WBurgess Battery Company
WBYD Company
WEdison Storage Battery Company
WEneloop
WFriwo Gerätebau GmbH
WFulmen Batteries
WGold Peak
WKodak
WMaxell
WP. R. Mallory and Co Inc
WPanasonic
WRenata (battery)
WSaft Groupe S.A.
WSanyo
WUniEnergy Technologies
WValence Technology