Lesi siteshi seshaja esingu-2-in-1 sisebenzisa ubuchwepheshe obusezingeni eliphezulu bokulawula okuzenzakalelayo.Ifakwe imisebenzi ehlukahlukene, efana ne-overcurrent, i-overcharge, i-overvoltage, ukushisa ngokweqile, njll. kanye nomsebenzi wokulawula izinga lokushisa, ukucisha okuzenzakalelayo, ukuhlonza into yangaphandle kanye nensimbi, njll.ukuze ukwazi ukushajwa okungenantambo ngokuthula okuphelele kwengqondo.