Magnum Energy ME-RC Remote - Manual (Page 84)

8.0 Using a BMK: Operating/Monitoring
77 ©2013 Magnum Energy, Inc.
point. While this reference point is being calculated, the display will show
“Think’n”, to indicate that the SOC reference point is being calculated. After
the batteries are fully charged, the display will change from Think’n to 100%
and begin to provide accurate SOC percentage values.
Info: Think’n can take up to several days depending on the charge
source and its ability to completely recharge the batteries (e.g., a
small PV array may not be large enough to replace all the AHrs in
a reasonable amount of time).
If the Sense Module is disconnected from power, this display resets to Think’n
and the batteries will require another full charge before this display begins
providing SOC percentage information.
Info: Try to limit battery discharging to 50% of capacity (keep
battery above 50% SOC). If batteries are allowed to be continually
discharged below 50% SOC, their effective service life will be con-
siderably shorter. This 50% rule has been determined to be the best
compromise between available energy and the maximum number
of discharge cycles a battery can provide.
03 BM: Meters – This menu shows the battery bank’s DC voltage, DC
current, and AH information that has been provided by the battery meter.
The values for these meter displays are updated each second.
• DC
Volts – Displays the real-time battery voltage from
07.00 to 70.00 volts (± 0.02 volts).
• DC Amps – Displays the real-time charge current (amps into the
battery) or discharge current (amps out of the battery). Charging is
shown as a positive (+) number and discharging is shown as a negative
(-) number. The range is from ±0.1 to 999 amps, with a 1.0% accuracy.
• AH I/O (Amp-Hours In/Out) – Displays the AHrs returned to/removed
from the battery. When the value is positive, it represents AHrs returned
to the battery during any subsequent charging. A negative value
represents AHrs removed from a full battery. The range is ±32,768 AH.
When using the charge effi ciency’s Auto setting, the AH I/O value is
recalculated after the battery has been fully charged (i.e., 100% SOC)
and ≥0.5% of the battery capacity has been discharged. If the Sense
Module is disconnected from power, the AH I/O value resets to zero.
Info: The AH I/O display correlates with the battery’s Batt Amphr
setting to help determine the 02 BM: SOC display.
Info: AH I/O example: if you run a 10-amp load for three hours,
the display will show -30 AH. When you begin charging, the display
will count from -30 AH back toward 0 AH.
• rAH Out (Resettable AHrs Removed) – This meter displays the
total AHrs removed from the battery since it was last reset. This
display can be used as a battery load indicator to help identify and
monitor the battery load consumption. The range is 0 to 65,535.0
AHrs (0.1 amp-hour resolution).
To reset the AHrs value to zero, press and hold the rotary SELECT knob
for >5 seconds when this display is shown. After this display has been
reset, it will begin calculating and displaying new rAH Out values. This
display automatically resets to zero if the Sense Module is disconnected
from power.