Hitech - 12pcs size AAA Rechargeable Batteries(special offer height power 1000mAh consumer-Holiday season Sale) for GeoTrax Working Town Train Railway 12 Hitech AAA Ni-MH rechargeable batteries. Chemistry: Ni-MH (no memory effect) ; Capacity: 750mAh ; Voltage: 1.2V Provides longer run time for toy trains and other toys using AAA size batteries Cost saving than alkaline batteries Charges up to 300 times