The amazing, rechargeable Power Plant CD battery for portable CD players can operate most leading 2 x AA powered units for up to 30 hours of continuous run time. It is the shape and size of a CD jewel case so it fits neatly into a waist pack or back pack. It can be recharged over 500 times using the 4.5 Volt AC adapter provided with most 2 xAA CD players. Recharge up to 500 times. 4.5V output, 4 mm connector, positive center pin. Charger sold separately.
Power Plant CD Battery Pack