> For the complete documentation index, see [llms.txt](https://evoffer.gitbook.io/evoffer-user-guide-hk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://evoffer.gitbook.io/evoffer-user-guide-hk/electway-gbt-to-ccs2-dc-adapter/precautions-for-800v-hv-system.md).
# 800V 高壓系統注意事項
近年，部份電動車品牌開始使用 800V 高電壓架構，而部份充電站並未支援這些車型，在國內充電時需要額外注意。
## 甚麼是 800V 車型？
巿場上大部份車型均採用 400V 高壓系統。400V 高壓系統實際電壓範圍是 220V \~ 480V，而 800V 高壓系統則支援高達 960V。目前本港巿場上使用 800V 系統既車型十分少，包括但不限於：
* Audi e-tron GT quattro
* Audi e-tron GT RS
* BYD Seal
* Hyundai IONIQ 5
* Hyundai IONIQ 6
* Kia EV6
* Kia EV9
* Porsche Taycan
其餘大部份車款包括 Tesla, BMW, Mercedes Benz 等品牌既電動車均採用 400V 系統。
## 如何選擇充電站？
由於各個充電站供電條件不同，部份充電站可能只支援 500V 或以下高壓系統。使用前務必事先確認充電站支援 700V 或以上。部份充電品牌的 App 或微信小程序可以篩選 700V 或 750V 以上的充電站。
## 點解喺香港無遇過呢個問題？
香港基本上大部份直流充電器均支援高達 1000V 輸出，因此在選擇充電站時並沒有太大限制。而國內因為成本、供電等各方面因素影響，加上充電站年代比較久遠，未必所有充電站均支援 800V 系統。
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