ʻO ka uila High Voltage Heater (HVH a i ʻole HVCH) ka ʻōnaehana hoʻomehana kūpono no nā plug-in hybrids (PHEV) a me nā kaʻa uila uila (BEV).Hoʻololi ia i ka mana uila DC i wela me ka ʻole o nā poho.ʻO ka ikaika e like me kona inoa, ua kūikawā kēia mea hoʻomehana kiʻekiʻe no nā kaʻa uila.Ma ka hoʻololi ʻana i ka ikehu uila o ka pākaukau me ka volta DC, mai ka 300 a 750v, i ka wela nui, hāʻawi kēia mea hana i ka hoʻomehana maikaʻi ʻole-emission-nā mea a pau i loko o ke kaʻa.