Owner`s manual

19 ©2013 Magnum Energy, Inc.
3.0 Setup
Group/Code
Size
Physical Size
(L” x W” x H”)
Battery
Voltage
Battery AHrs
(20-hr rate)
GC-2 (Golf cart) 10
3/8 x 7 13/16 x 10 5/8 6V 220 AHrs
L-16 11
11/16 x 7 x 16 11/16 6V 375 AHRs
Group 22 9
1/2 x 6 7/8 x 8 5/16 12V 55 AHRs
Group 24 10
1/4 x 6 13/16 x 8 7/8 12V 70 AHRs
Group 27 12
1/16 x 6 13/16 x 8 7/8 12V 95 AHRs
Group 31 13 x 6
13/16 x 9 7/16 12V 110 AHRs
4D 20
3/4 x 8 3/4 x 9 7/8 12V 200 AHRs
8D 20
3/4 x 11 1/8 x 9 7/8 12V 250 AHRs
Table 3-3, Battery Size to Battery AmpHrs (estimated)
Once you’ve determined the amp-hour capacity of each battery, review how
your batteries are connected (parallel or series) to determine the total amp-
hour capacity of the battery bank:
Parallel connection – batteries connected in parallel (positive to positive,
negative to negative) increase the AHr capacity of the battery bank, but
the voltage remains the same.
Example: A 12-volt battery bank with three 12-volt batteries that are rated
at 125 AHrs each. Each of the positive terminals are connected together and
each of the negative terminals are connected together (i.e., connected in
parallel). The AHrs of each battery connected in parallel are added together
(125 AH + 125 AH + 125 AH = 375 AH), but the voltage of the battery bank
stays the same (12 VDC).
Series connection – batteries connected in series (pos. to neg.) increase
the voltage of the battery bank, but the AHr rate remains the same.
Example: A 12-volt battery bank with two 6-volt batteries that are rated
at 220 AHrs. The positive terminal of the fi rst battery is connected to the
negative terminal of the second battery (i.e., connected in series). Since the
two 6-volt batteries are connected in series, the voltage of the batteries are
added together to produce 12-volts (6 VDC + 6 VDC = 12 VDC), but the
amp-hour capacity of the battery bank does not change (220 AH).
In battery banks where you have batteries connected in series and in parallel,
the rules are the same. The batteries connected in series are referred to as a
‘series string’ and the amp-hour capacity doesn’t change. Each series string
is connected together in parallel to increase the amp-hour capacity. Add the
amp-hour capacity of each series string connected in parallel to determine
the total amp-hour capacity of the battery bank.
• SETUP: 04 Battery Type – Used to select the battery type, which
determines the battery charge profi le and ensures the batteries are
receiving the proper charge voltage. The fi xed voltage selections are:
GEL (for Gel batteries), Flooded (for liquid lead acid batteries), AGM 1
(for Lifeline AGM batteries), and AGM 2 (for East Penn/Deka/Discover/
Trojan AGM batteries).
The Custom selection allows the Float, Absorb,
and EQ voltage settings to be individually adjusted. See Table 3-4 to
determine specifi c charge voltage based on the battery type selected.
Default setting: BatType = Flooded, (Custom – Absorb = 14.4V,
Float = 13.2V, Equalize =
15.6V)
Range: Gel, Flooded, AGM 1, AGM 2, Custom (12.0-16.0V for 12v)