Battery Bank
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PCMS Operations, Safety & Maintenance V2
Ver-Mac 2019
12 Battery Bank
12.1 Sealed Battery Maintenance
12.1.1
Validating Battery State of Charge (SOC)
To check battery level:
1. Bring the trailer inside.
2. Put the trailer in full operation mode, at the highest brightness, and let it in operation for
at least five (5) minutes, but no more than 15 minutes.
3. From the terminal strip inside the plastic battery box, measure the voltage:
a. Put the positive lead on any of the screws that has a cable identified 12 V.
b. Put the negative lead on any of the screws that has a cable identified GND.
4.
Use Table 1 to find out if the batteries are fully charged
.
Note that gravity measurement is not possible with sealed batteries. See next section for the battery
charging procedure.
Percentage of Charge
Open Circuit Voltage (V)
100
12.73
90
12.62
80
12.50
70
12.37
60
12.24
50
12.10
40
11.96
30
11.81
20
11.66
10
11.51
Table 1 - State of charge for a 12 V sealed battery
Summary of Contents for PCMS-1500
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