Magnum Energy ME-MR Remote - Manual (Page 14)

8 ©2013 Magnum Energy, Inc.
3.0 Setup
3.2.3 Battery Amp-Hours Menu
• BAT AHRS – This selection is used to select the approximate capacity
of the battery bank that is connected to the inverter (in battery amp-
hours). This setting determines the time the battery charger is in the
Absorb Charging stage (i.e., absorption time). See Table 3-1 to correlate
the battery capacity to the absorption time.
Default setting: BAT AHRS = 400 AH
Range: 200 AH, 400 AH, 800 AH
Table 3-1, Battery Amp-Hrs to Absorb Charging Time
Battery Amp-Hours Selected Absorb Charging Time
Batt AmpHrs = 200 60 minutes
Batt AmpHrs = 400 90 minutes
Batt AmpHrs = 800 120 minutes
Where to set: Select the setting based on the 20-hour Amp-Hour (AH)
capacity of your battery bank.
How do I determine my battery AH capacity? The inverter requires deep
cycle batteries, which are specifi cally made for continuous use. Deep cycle
batteries are rated either by: a) amp-hours, or b) reserve capacity in minutes.
•
Amp-hour (AH) capacity is a measurement of how many amps a battery
can deliver for a specifi ed length of time (usually 20 hrs) until the
voltage achieves 1.75 VDC/cell at 80° F.
• Reserve Capacity (RC) is a measure of how many minutes a battery can
deliver a certain amount of current (usually 25A) while maintaining a
voltage above 1.75 VDC/cell at 80° F.
Info: If using the Reserve Capacity (25A), the 20 hour AH capacity
can be estimated by multiplying ‘reserve capacity’ by 50%.
Bottom line shows
current “saved” setting
If this setting is correct,
press MENU button to
access different menu items
If a different setting
is required:
press press press
To save the current
setting displayed:
ON/OFF
CHANGE
MENU
HOME
SAVE
HOLD
BAT AHRS
400 AH
BAT AHRS
200 AH
BAT AHRS
400 AH
BAT AHRS
800 AH
Figure 3-4, Battery Amp-Hours Selections
Table 3-2 on the facing page provides an estimated 20 hour AH capacity
based on the group/code size, physical size, and the voltage of the battery.
If you are not sure of your battery’s 20 hour AH rating, consult your battery
manufacturer/dealer or use Table 3-2 to obtain an estimate.