Usoro ịkwụ ụgwọ EV na-ebuga ike site na grid ọkụ gaa na batrị EV, n'agbanyeghị na ị na-eji chaja AC n'ụlọ ma ọ bụ DC ngwa ngwa n'ụlọ ahịa na okporo ụzọ. Ọ na-ebuga ike site na ụgbụ ọkụ na batrị maka nchekwa. N'ihi na ọ bụ naanị ike DC ka enwere ike ịchekwa na batrị ahụ, enweghị ike ibunye ike AC na batrị ozugbo, ọ kwesịrị ka chaja onboard gbanwee ya ka ọ bụrụ ike DC.
Ọtụtụ ndị mmadụ na-echegbu onwe ha na chaja ngwa ngwa dị elu ga-abụ nnukwu ihe ịma aka maka grid ọkụ ma ọ bụ obere ojiji nke chaja ngwa ngwa DC. Mana yana teknụzụ na-emepe emepe yana ọtụtụ EVs n'okporo ụzọ, ịchaji ngwa ngwa ga-abụ ihe siri ike.
Enwere ike kewaa ọkọlọtọ nchaji na ụkpụrụ 5, nke bụ CHAdeMO (Japan), GB/T (China), CCS1 (US), CCS2 (EU) na Tesla. N'ime ya, usoro nzikọrịta ozi n'etiti BMS na chaja abụghị otu, CHAdeMO na GB/T nakweere CAN commutation protocol; CCS1 na CCS2 ka anabatara usoro nzikọrịta ozi PLC. Ya mere, ọ na-ewute onye ọrụ, onye obodo ya nwere ụdị chaja ọkọlọtọ EV, onye nwere ike ọ gaghị ahụ ụlọ ọrụ nchaji DC kwesịrị ekwesị. N'ahịa, ABB haziri chaja DC jikọtara ụkpụrụ ịkwụ ụgwọ abụọ, bụ nke edozi akụkụ nke nsogbu ahụ.
N'ikwu okwu n'ozuzu, nchaji ngwa ngwa DC abụghị ịchaji batrị ka ọ juo n'ime nkeji ole na ole, kama iji chaja ụgbọ ala na echiche ịkwọ ụgbọala n'ime obere oge, nke na-abịaru nso àgwà ịnya ụgbọ ala mmanụ ụgbọala. N'otu oge ahụ, ọ nwere ihe dị elu chọrọ maka nchekwa batrị.