Digital Monitoring Products
XR150FC/XR550FC Series Installation Guide
10
Standby Battery Selection
After performing the calculations in Power Requirements, complete the following steps to select standby batteries:
Note:
If the Power Requirements calculation is greater than any Max. Ah Available shown on a table, add power
supplies to reduce the required amp hours. See the 710 Bus Splitter/Repeater Installation Guide (LT‑0310) for more
information.
1. Select the desired standby hours required from the following table: 24, 60, or 72 hours.
2. Select the desired battery size, then select a Max. Ah Available that slightly exceeds the number of total required
Ah calculated in Power Requirements.
3. Install the number of batteries shown in the corresponding No. of Batteries column.
Example: If total required amp hours equals 22 Ah for 24 hours of standby time and you want to use 5.0 Ah batteries,
install six Model 368 (12 VDC, 5.0 Ah) batteries.
For listed installations, batteries can be installed in a DMP Model 341, 349, 350 or 352S enclosure and all wiring shall run
through conduit. The enclosure shall be installed to the left of the XR150FC/XR550FC Series panel enclosure to ensure
Battery and AC wire separation. For a list of compatible batteries, refer to "Batteries and Battery Accessories".
24 hours standby power, 48 hours recharge time
5.0 Ah Batteries
7 Ah Batteries
7.7 Ah Batteries
9 Ah Batteries
18 Ah Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
8
2
6
1
6
1
8
1
16
1
12
3
12
2
13
2
16
2
32
2
16
4
18
3
20
3
24
3
48
3
20
5
24
4
27
4
32
4
24
6
31
5
34
5
40
5
28
7
37
6
41
6
32
8
43
7
36
9
40
10
60 hours standby power, 48 hours recharge time
7 Ah Batteries
7.7 Ah Batteries
9 Ah Batteries
18 Ah Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
13
2
14
2
17
2
17
1
20
3
22
3
26
3
34
2
27
4
29
4
34
4
52
3
33
5
37
5
43
5
69
4
40
6
44
6
52
6
47
7
52
7
61
7
54
8
59
8
69
8
60
9
67
9
67
10
72 hours standby power, 72 hours recharge time
9 Ah Batteries
18 Ah Batteries
Max. Ah
Available
No. of
Batteries
Max. Ah
Available
No. of
Batteries
16
2
16
1
25
3
33
2
33
4
50
3
42
5
67
4
50
6
59
7
67
8
Table 1: Standby Battery Specifications
