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©2007 Magnum Energy Inc.
Setup
3.0 Setup
This section provides information on the charge ef
fi
ciency setting and shows
you how to access/adjust this setting. Normally the ME-BMK Battery Monitor
(BM) automatically calculates the battery’s ef
fi
ciency, however you may want
to manually set the ef
fi
ciency.
Info:
The factory default setting is
Chg Eff: Auto,
this setting al-
lows the charging ef
fi
ciency to be automatically calculated. In most
circumstances, the “Auto” setting will determine the best charge
ef
fi
ciency.
CAUTION:
If you do not know your battery’s charging ef
fi
ciency,
leave this setting at the factory default setting, if this setting is
manually set and incorrect, the state-of-charge information would
be more inaccurate with every charge.
What is Charge Effi ciency?
When a certain amount of energy is removed
or discharged from the battery, this removed energy will need to be returned
to keep the batteries at a 100% state of charge. As batteries are being
charged, they lose energy; either in the form of heat or while gassing. This
loss of energy while charging means the battery will not be fully charged if
you only return the current that was removed. To compensate for the batter-
ies inef
fi
ciencies while charging, a charge ef
fi
ciency setting is provided. The
charge ef
fi
ciency setting compensates the AH I/O (AmpHrs In/Out) reading
by ensuring the amphrs returned to the battery are greater than the amp-
hours removed.
For example, if your AH I/O display reads 000 and you begin powering a 25
amp load for two hours, the display will show -050. This indicates that you
have discharged 50 amp-hrs (2 x 25) from the battery. If the charge ef
fi
ciency
setting is set to 95%, then as you begin charging and return 50 amp-hrs, the
AH I/O reading will be less than zero, indicating that the amp-hours removed
have not been fully returned. The 95% charge ef
fi
ciency setting requires 52.5
amp-hours (50/95) to be returned before the AH I/O returns to 0.
3.1 Accessing the Charge Effi ciency Menu Item
On the ME-RC remote control, press the
METER
pushbutton and rotate the
‘SELECT’ knob until the display shows the 05 BM: SETUP menu. Once the 05
BM: SETUP menu is displayed, press the ‘SELECT’ knob to access the Charge
Ef
fi
ciency setting (see
fi
gure 3-1).
Figure 3-1, Accessing the Charge Efficiency Menu Item
Info:
For additional information on navigating the remote display,
see the ME-RC Owner’s Manual (PN: 64-0003).
Info:
See
fi
gure 4-1
, METER Menu Map (ME-BMK Displays)
for a
complete map of the menu items and adjustable settings available
for the ME-BMK using the ME-RC remote control.
METER
press
Status…
05 BM: SETUP
rotate to
press to select
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