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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
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:
Table 3-2, Battery AmpHrs Capacity to Suggested Absorb Time
How do I determine my Battery Amp-Hour capacity?
The inverter
requires deep cycle batteries, which are speci
fi
cally made for continuous
use. The batteries are rated either by AHrs or reserve capacity in minutes.
•
Amp-hour (AH) capacity is a measurement of how many amps a battery
can deliver for a speci
fi
ed length of time (usually 20 hours) 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) and maintain 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 ‘minutes reserve capacity’ by 50%.
Table 3-3 provides an estimated 20-hour amp-hour capacity based on the
group/code size, physical size, and voltage of the battery. If you are not
sure of your battery’s 20-hour AH rating, consult your battery manufacturer/
dealer or use the table below to obtain an estimate.
Battery
AmpHrs
Capacity
Suggested
Absorb Time
Battery
AmpHrs
Capacity
Suggested
Absorb Time
200-300
60 minutes
1310-1500
240 minutes
310-500
90 minutes
1510-1700
270 minutes
510-700
120 minutes
1710-1900
300 minutes
710-900
150 minutes
1910-2100
330 minutes
910-1100
180 minutes
2110-2300
360 minutes
1110-1300
210 minutes
2310-2500
390 minutes
Table 3-3, Battery Size to Battery AmpHrs (estimated)