This is the DuraTrax pack of rechargeable 750mAh AAA 1.2V NiMH Cells.
High Discharge capability that is ideal for small radio control models such as the Iwaver series
Includes: Four DuraTrax 750mAh AAA 1.2V NiMH Cells
Standard charging at 75mA for 12 hours or fast charging at 500mA only when using a NiMH Peak Charger such as the DuraTrax Ice Charger, DTXP4170
Length: 1.73" (43.9mm)
Diameter: .394" (10mm)