Features: -It can be connected with a USB charging cable (included), and can be charged by power bank, mobile phone charger, computer and other devices. -As a good replacement for damaged or old batteries. -With 2P SM connector, easy to install, suitable for RC cars. Description High quality Ni-MH 7.2 V 2400 mAh rechargeable AA batteries with SM 2P connection. Easy installation and perfect performance. As a good replacement for damaged or old batteries. Battery pack dimensions: 51 x 43.5 x 29 mm / 2 x 1.71 x 1.14 inches. Please make sure the battery size and port of your device are the same as the picture before purchasing. .