3BK-3MCCAW: 3.6 volt 2000mAh eneloop Ni-MH battery pack - PRE-CHARGED & READY TO USE. Made with 3 x eneloop AA cells, which are high-capacity, memory-free, & have long storage life. They RETAIN THEIR CHARGE for over a year when not in use! Choose Pack Shape, and choose wire leads or Connector from scroll-down menus. 3.6 volt is a handy voltage level for ignition power requirements.