... Environment Friendly Battery:ROHS Certification TypeRechargeable Nickel Metal Hydride batteryNameNi-MH AAA 550mAh 7.2V batteryModel2SN-AAA55H-S-JST EHRNominal Voltage2 ... 45CCertificationCE,UL,ROHS,ISO,OVONIC,RBRCApplicationCordless phone,Light,toy,etc. NI MH AAA 2.4V 500mAh rechargeable battery