{"id":1721,"date":"2025-08-22T02:56:40","date_gmt":"2025-08-22T02:56:40","guid":{"rendered":"https:\/\/www.upspower-supply.com\/?p=1721"},"modified":"2025-08-22T03:17:01","modified_gmt":"2025-08-22T03:17:01","slug":"what-should-voltage-on-car-battery-be","status":"publish","type":"post","link":"https:\/\/www.upspower-supply.com\/vi\/what-should-voltage-on-car-battery-be\/","title":{"rendered":"\u0110i\u1ec7n \u00e1p tr\u00ean \u1eafc quy \u00f4 t\u00f4 ph\u1ea3i l\u00e0 bao nhi\u00eau?"},"content":{"rendered":"

Bi\u1ebft \u0111\u00fang \u0111i\u1ec7n \u00e1p \u1eafc quy \u00f4 t\u00f4<\/strong> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1eef cho xe c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady. \u1eaec quy y\u1ebfu ho\u1eb7c b\u1ecb l\u1ed7i c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u1edfi \u0111\u1ed9ng, \u0111\u00e8n pha m\u1edd v\u00e0 th\u1eadm ch\u00ed l\u00e0 h\u1ecfng h\u00f3c \u0111\u1ed9t ng\u1ed9t. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c coi l\u00e0 g\u00ec \u0111i\u1ec7n \u00e1p b\u00ecnh \u1eafc quy \u00f4 t\u00f4 th\u00f4ng th\u01b0\u1eddng<\/strong>, b\u1ea1n c\u00f3 th\u1ec3 nhanh ch\u00f3ng bi\u1ebft \u0111\u01b0\u1ee3c \u1eafc quy v\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n c\u1ee7a b\u1ea1n c\u00f3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng hay kh\u00f4ng.<\/p>

\u0110i\u1ec7n \u00e1p b\u00ecnh th\u01b0\u1eddng c\u1ee7a \u1eafc quy \u00f4 t\u00f4 (T\u1eaft \u0111\u1ed9ng c\u01a1)<\/h2>

M\u1ed9t \u1eafc quy ch\u00ec-axit 12 volt \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ea7y s\u1ebd c\u00f3 th\u00f4ng tin v\u1ec1 12,6\u201312,8 V<\/strong> khi t\u1eaft \u0111\u1ed9ng c\u01a1. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 pin kh\u1ecfe v\u00e0 s\u1eb5n s\u00e0ng cung c\u1ea5p c\u00f4ng su\u1ea5t t\u1ed1i \u0111a khi kh\u1edfi \u0111\u1ed9ng xe.<\/p>

\u0110i\u1ec7n \u00e1p (V)<\/th>Tr\u1ea1ng th\u00e1i s\u1ea1c<\/th>\u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 g\u00ec<\/th><\/tr><\/thead>
12,6\u201312,8 V<\/td>100%<\/td>\u0110\u00e3 s\u1ea1c \u0111\u1ea7y, t\u00ecnh tr\u1ea1ng tuy\u1ec7t v\u1eddi<\/td><\/tr>
12,4\u201312,5 V<\/td>~75%<\/td>C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nh\u01b0ng kh\u00f4ng l\u00fd t\u01b0\u1edfng; c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n trong th\u1eddi ti\u1ebft l\u1ea1nh<\/td><\/tr>
12,0\u201312,2 V<\/td>~50%<\/td>Y\u1ebfu, c\u1ea7n s\u1ea1c l\u1ea1i s\u1edbm<\/td><\/tr>
< 11,8 V<\/td>\u0110\u00e3 xu\u1ea5t vi\u1ec7n<\/td>C\u00f3 kh\u1ea3 n\u0103ng b\u1ecb h\u01b0 h\u1ecfng ho\u1eb7c \u0111\u00e3 h\u1ebft v\u00f2ng \u0111\u1eddi<\/td><\/tr><\/tbody><\/table><\/figure>

\u0110i\u1ec7n \u00e1p b\u00ecnh th\u01b0\u1eddng c\u1ee7a \u1eafc quy \u00f4 t\u00f4 khi ch\u1ea1y<\/h2>

Khi \u0111\u1ed9ng c\u01a1 \u0111ang ch\u1ea1y, m\u00e1y ph\u00e1t \u0111i\u1ec7n s\u1ebd gi\u1eef cho h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c s\u1ea1c. Gi\u00e1 tr\u1ecb \u0111\u1ecdc b\u00ecnh th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng 13,7\u201314,7 V<\/strong>. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y m\u00e1y ph\u00e1t \u0111i\u1ec7n \u0111ang cung c\u1ea5p \u0111\u1ee7 d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 c\u1ea5p \u0111i\u1ec7n cho xe v\u00e0 s\u1ea1c l\u1ea1i pin c\u00f9ng m\u1ed9t l\u00fac.<\/p>

  • < 13,5 V<\/strong> \u2192 M\u00e1y ph\u00e1t \u0111i\u1ec7n c\u00f3 th\u1ec3 kh\u00f4ng s\u1ea1c \u0111\u00fang c\u00e1ch.<\/li>\n\n
  • > 15 V<\/strong> \u2192 B\u1ed9 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 b\u1ecb l\u1ed7i; c\u00f3 nguy c\u01a1 s\u1ea1c qu\u00e1 m\u1ee9c v\u00e0 l\u00e0m h\u1ecfng thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<\/li><\/ul>

    \u0110i\u1ec7n \u00e1p khi kh\u1edfi \u0111\u1ed9ng xe (Quay s\u1ed1)<\/h2>

    Khi b\u1ea1n xoay ch\u00eca kh\u00f3a, \u0111i\u1ec7n \u00e1p \u1eafc quy s\u1ebd gi\u1ea3m trong th\u1eddi gian ng\u1eafn khi c\u00f3 t\u1ea3i. Vi\u1ec7c \u0111i\u1ec7n \u00e1p gi\u1ea3m xu\u1ed1ng kho\u1ea3ng 10,0\u201310,5 V<\/strong> trong qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng. N\u1ebfu \u0111i\u1ec7n \u00e1p xu\u1ed1ng d\u01b0\u1edbi 9,5 V, pin y\u1ebfu ho\u1eb7c s\u1eafp h\u1ecfng.<\/p>

    T\u1ea1i sao \u0111i\u1ec7n \u00e1p \u1eafc quy \u00f4 t\u00f4 l\u1ea1i quan tr\u1ecdng<\/h2>

    Theo d\u00f5i \u0111i\u1ec7n \u00e1p l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u1ea5t \u0111\u1ec3 ki\u1ec3m tra t\u00ecnh tr\u1ea1ng pin. \u0110i\u1ec7n \u00e1p th\u1ea5p ho\u1eb7c dao \u0111\u1ed9ng c\u00f3 th\u1ec3 c\u1ea3nh b\u00e1o b\u1ea1n v\u1ec1:<\/p>

    • Pin c\u0169 kh\u00f4ng c\u00f2n gi\u1eef \u0111\u01b0\u1ee3c \u0111i\u1ec7n<\/li>\n\n
    • S\u1ef1 c\u1ed1 m\u00e1y ph\u00e1t \u0111i\u1ec7n ho\u1eb7c b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p<\/li>\n\n
    • \u0110\u1ea7u c\u1ef1c c\u1ee7a pin b\u1ecb \u0103n m\u00f2n ho\u1eb7c l\u1ecfng l\u1ebbo<\/li>\n\n
    • C\u1ed1ng tho\u00e1t n\u01b0\u1edbc k\u00fd sinh (thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau th\u1ee5 \u0111i\u1ec7n khi t\u1eaft)<\/li><\/ul>

      C\u00e1ch ki\u1ec3m tra \u0111i\u1ec7n \u00e1p \u1eafc quy \u00f4 t\u00f4 c\u1ee7a b\u1ea1n<\/h2>
      1. L\u1ea5y m\u1ed9t chi\u1ebfc \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 c\u00e0i \u0111\u1eb7t \u1edf ch\u1ebf \u0111\u1ed9 v\u00f4n DC.<\/li>\n\n
      2. Ch\u1ea1m \u0111\u1ea7u d\u00f2 m\u00e0u \u0111\u1ecf v\u00e0o c\u1ef1c d\u01b0\u01a1ng (+) v\u00e0 \u0111\u1ea7u d\u00f2 m\u00e0u \u0111en v\u00e0o c\u1ef1c \u00e2m (\u2013).<\/li>\n\n
      3. \u0110o khi t\u1eaft \u0111\u1ed9ng c\u01a1, sau \u0111\u00f3 \u0111o l\u1ea1i khi \u0111ang ch\u1ea1y.<\/li>\n\n
      4. So s\u00e1nh k\u1ebft qu\u1ea3 v\u1edbi c\u00e1c b\u1ea3ng tr\u00ean \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n c\u00f3 kh\u1ecfe m\u1ea1nh kh\u00f4ng.<\/li><\/ol>

        T\u00f3m t\u1eaft nhanh:<\/strong> C\u00e1c \u0111i\u1ec7n \u00e1p b\u00ecnh \u1eafc quy \u00f4 t\u00f4 th\u00f4ng th\u01b0\u1eddng<\/em> l\u00e0 12,6 V (t\u1eaft \u0111\u1ed9ng c\u01a1)<\/strong>, 10\u201310,5 V (trong khi kh\u1edfi \u0111\u1ed9ng)<\/strong>, V\u00e0 13,7\u201314,7 V (\u0111\u1ed9ng c\u01a1 \u0111ang ch\u1ea1y)<\/strong>. B\u1ea5t k\u1ef3 gi\u00e1 tr\u1ecb n\u00e0o n\u1eb1m ngo\u00e0i ph\u1ea1m vi n\u00e0y c\u00f3 ngh\u0129a l\u00e0 \u0111\u00e3 \u0111\u1ebfn l\u00fac b\u1ea1n c\u1ea7n ki\u1ec3m tra pin ho\u1eb7c h\u1ec7 th\u1ed1ng s\u1ea1c.<\/p>

        Khi n\u00e0o c\u1ea7n thay \u1eafc quy \u00f4 t\u00f4<\/h2>

        \u1eaec quy \u00f4 t\u00f4 th\u01b0\u1eddng k\u00e9o d\u00e0i 3\u20135 n\u0103m<\/strong>. N\u1ebfu \u0111i\u1ec7n \u00e1p pin c\u1ee7a b\u1ea1n gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 12,2 V sau khi s\u1ea1c<\/strong>ho\u1eb7c n\u1ebfu \u1eafc quy kh\u00f4ng th\u1ec3 duy tr\u00ec \u0111i\u1ec7n \u00e1p khi t\u1ea3i, n\u00ean thay th\u1ebf. Ch\u1ee7 \u0111\u1ed9ng thay th\u1ebf \u1eafc quy c\u0169 s\u1ebd gi\u00fap tr\u00e1nh t\u00ecnh tr\u1ea1ng xe ch\u1ebft m\u00e1y.<\/p>

        Pin k\u00e9o trong xe \u0111i\u1ec7n<\/h2>

        Trong khi xe \u00f4 t\u00f4 truy\u1ec1n th\u1ed1ng s\u1eed d\u1ee5ng pin 12V \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, h\u1ea7u h\u1ebft xe \u0111i\u1ec7n (EV)<\/strong> s\u1eed d\u1ee5ng pin k\u00e9o \u0111i\u1ec7n \u00e1p cao trong ph\u1ea1m vi 400V \u0111\u1ebfn 800V<\/strong>. Nh\u1eefng lo\u1ea1i pin n\u00e0y cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho \u0111\u1ed9ng c\u01a1 truy\u1ec1n \u0111\u1ed9ng, cho ph\u00e9p s\u1ea1c nhanh v\u00e0 hi\u1ec7u su\u1ea5t cao. Ng\u01b0\u1ee3c l\u1ea1i, h\u1ec7 th\u1ed1ng 12V tr\u00ean xe \u0111i\u1ec7n v\u1eabn c\u00f2n, nh\u01b0ng ch\u1ec9 cung c\u1ea5p \u0111i\u1ec7n cho c\u00e1c ph\u1ee5 ki\u1ec7n nh\u01b0 \u0111\u00e8n, h\u1ec7 th\u1ed1ng th\u00f4ng tin gi\u1ea3i tr\u00ed v\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n. Pin k\u00e9o \u0111i\u1ec7n \u00e1p cao h\u01a1n r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 cung c\u1ea5p l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng l\u1edbn c\u1ea7n thi\u1ebft cho vi\u1ec7c v\u1eadn h\u00e0nh xe hi\u1ec7u qu\u1ea3.<\/p>

        Lo\u1ea1i pin<\/th>\u0110i\u1ec7n \u00e1p<\/th>M\u1ee5c \u0111\u00edch<\/th><\/tr>
        \u1eaec quy \u00f4 t\u00f4 12V<\/td>~12,6V<\/td>Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, \u0111\u00e8n, \u0111\u1ed9ng c\u01a1 kh\u1edfi \u0111\u1ed9ng<\/td><\/tr>
        Pin k\u00e9o EV<\/td>400V \u2013 800V<\/td>\u0110i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1, s\u1ea1c nhanh, \u0111\u1ea9y<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"

        Bi\u1ebft \u0111i\u1ec7n \u00e1p \u1eafc quy \u00f4 t\u00f4 ch\u00ednh x\u00e1c l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o xe c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady. \u1eaec quy y\u1ebfu ho\u1eb7c b\u1ecb l\u1ed7i c\u00f3 th\u1ec3 g\u00e2y ra [\u2026]<\/p>","protected":false},"author":1,"featured_media":1725,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1721","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"\nWhat should voltage on car battery be? - UPS power supply<\/title>\n<meta name=\"description\" content=\"Wondering what the correct voltage on a car battery should be? 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