Thaum kuaj, peb yuav tsum xub nrhiav qhov chaw sim. Vim tias peb yog cov kev ntsuas zoo thiab muaj nuj nqis, muaj ntau qhov kev ntsuam xyuas muaj. Cov chaw kuaj hauv tsev muaj xws li 1.5V alkaline / carbon roj teeb (No. 1, No. 5 / AA, 7 No. / AAA), 1.2V rechargeable roj teeb, lub xov tooj ntawm tes charger, fais fab adapter, thiab lwm yam.
Thaum kuaj, tig lub digital multimeter mus rau qhov yuav tsum tau muaj DC voltage ntau, ntxig qhov kev xeem ua raws li cov lus qhia, txuas qhov chaw kuaj, thiab nyeem cov ntawv nyeem ntawm LCD, tsuav qhov ntsuas tus nqi nyob ib ncig ntawm lub nominal voltage. .
