... output 3 digital display V V mod Imotion 3v new product No MOQCE,RoHS,SGS,ULCustomization service is welcomeStandard component: Battery( ... silver/nickelcertificateCE. RoHS, SGS, UL Others: 1. Battery voltage less than 3.3v LED shows “Lo” and stop working.2. Imotion3 max ... , press the centre button, it will show battery voltage, for example, 3.7V will display “3.7U” .Lock protection: Press "-" and "+" ...