Engine Electrical System
Battery Description and Operation
In this manual: Engine Electrical System
3steps
~18min
2/5difficulty
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Description
- The CMF (Closed Maintenance Free) battery, as the name implies, requires no maintenance at all and has no removable battery caps.
- The CMF (Closed, Maintenance Free, Openable) battery does not require water top-up for maintenance, but has cell caps so that distilled water can be added if necessary.
- The battery is fully sealed, except for small vent holes in the cover.

Test yourself
A quick Hyundai Kona quiz: every answer comes with an explanation and a link to the manual page.
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