Mercury 300R HD CMS Mechanical Operation And Maintenance Manual page 28

GENERAL INFORMATION
*Engine at normal operation temperature.
**The idle charge compensation may automatically increase the engine speed
up to 725 RPM to compensate for a low battery charge condition. The
increased idle RPM will charge the battery at a higher rate. Activating troll
control (optional accessory) will override the idle charge compensation
feature.
***Battery manufacturers may rate and test their batteries to different
standards. MCA, CCA, Ah, and reserve capacity (RC) are the ratings
recognized by Mercury Marine. Manufacturers that use standards different
than these, such as equivalent MCA, do not meet Mercury Marine battery
requirements.
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