Features: -With over voltage, over current, over charge and short circuit protection. -Can provide 3 times working time than your original 4.8V 700mah Ni-CD battery pack (original 4.8V 700mah Ni-Cd capacity working time 25-30 minutes when fully charged). -With charging cable and charging indicator light, easy to check the charging status. -Suitable for electric remote control car, stunt car. Specification: Size: AA*4 units Tension: 4.8 V Capacity: 2400mAh Rechargeable: yes Plug-in type: SM -2P-connector Package Included: 1/2/4x 4.8V 2400mAh battery 1/2/4x USB charging cable .