100% tooj liab hlau + cov hlau nplaum tas mus li DC lub cev muaj zog, ua haujlwm zoo thiab txuag hluav taws xob, nyob ntsiag to thiab tsis kub, nrog kev txhim kho ntawm 70% piv rau cov tsoos AC motors. Nws kuj tuaj yeem hloov kho ntawm rau qhov nrawm. Kev tswj chaw taws teeb kuj tseem tuaj yeem hloov mus rau pem hauv ntej thiab thim rov qab, uas tuaj yeem siv rau lub caij ntuj sov lossis lub caij ntuj no los tswj huab cua. Lub cev muaj zog tsis muaj suab nrov tam sim no qis dua 35DB.