Engine Electrical System

Battery Description and Operation

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Description

  1. The CMF (Closed Maintenance Free) battery, as the name implies, requires no maintenance at all and has no removable battery caps.
  2. 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.
  3. 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.