Masisebenze ngaphakathi kwisizwe esingundoqo, seta i-multimeter ngaphakathi koluhlu lombane, ukujoyina i jonga usiba kwi Anderson plug kwi kwakhona UPS, kwaye ngeqondo elinye amandla ombane eDC afikelela kwi-UPS. Ngeli xesha, umlinganiswa omnye ujonga umboniso we-multimeter, kwaye okuchaseneyo kukhulula umgca wokungena we-UPS, kwaye ijonge umboniso we-multimeter ngexesha lokungaphumeleli kwamandla. Ukuba ixabiso lombane liyehla ngokukhawuleza, isondele ukuba kukho ingxaki ngebhetri. Ukuba ingxaki yobudlelwane inokupheliswa, kunye nebhetri Isetyenziswe malunga neminyaka, ukuze ufune ukukhumbula ukutshintsha ipakethi yebhetri.