以前的Toyota Celica 有電壓表可以即時顯示電池電壓

現在不知道有啥車會顯示。拚多多有插進點煙插座的電壓顯示，你可以看到車停了幾天之後電池的電壓比12v低了多少作為電池健康狀態的參考。https://www.temu.com/4-port-usb-car-charger-with-type-c-led-voltage-amps-display-fast-charge-adapter-for-iphone--devices-portable-charger-phone-charger-g-601099565338589.html?_oak_mp_inf=EN2fxLCm1ogBGiA0MDRkZDQxZTc4MDQ0ZjFjYmQ5NmY0YjE5NzhkY2E5ZSCyqeeB0jI%3D&top_gallery_url=https%3A%2F%2Fimg.kwcdn.com%2Fproduct%2Ffancy%2Fe6668526-c031-4741-80a4-42ffd564ea9b.jpg&spec_gallery_id=2114312538&refer_page_sn=10009&refer_source=0&freesia_scene=2&_oak_freesia_scene=2&_oak_rec_ext_1=MjQx&_oak_gallery_order=1760657896%2C2095951478%2C1432238493%2C1817772410%2C985125762&search_key=cigarette%20lighter%20voltage%20meter&refer_page_el_sn=200049&refer_page_name=search_result&refer_page_id=10009_1740002387298_fvqhddnw1k&_x_sessn_id=j3ggqk4csd