This device adopts microcomputer control and unique voltage sampling approaches and therefore,unlike multimeters that only measure battery voltage plus line loss and protective plate voltage drop,this tester displays the true voltage of the battery all the time.The parameter keyboard establishment,LCD demonstrated that,the ease of operation,reading directviewing;The performance precise reliable operation simple is directiewing;The contour artistic isdexterous.Mainly uses in the handset battery capacity test,the activation radio pressure battery.