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• The battery contains a battery management system (BMS) that warns you and protects the battery
from over-voltage, under-voltage, over-current, short circuit, high temperature, low temperature,
uneven temperature, uneven voltage, and insulation fault. At the Battery Operation Status, you
will find a number between 0-3.
0 = Normal (NO faults and all operating values are within normal range)
1 = Warning – message will clear when the system recovery value is reached
2 = Alarm – requires a battery restart when the system recovery value is reached
3 = Protection – requires a battery restart when the system recovery value is reached
B: State of Charge (SOC%)
• SOC Percentage = the current amount of capacity the battery has in SOC%
o Depending on the firmware installed, a State of Charge (SOC) Warning will occur.
(See the BMS Warnings & Protections chart below)
C: Cell Voltages
• Max_Volt = the cell number (No.) with the largest mV
• Min_Volt = the cell number (No.) with the smalles mV
o These values will be utilized in determining the cell under-voltage or cell over-
voltage BMS warnings and protections. (See the BMS Warnings & Protections chart
below)
D: System Voltage and Total Current
• Total Voltage = current battery voltage
o The total voltage will be utilized in determining the system under-voltage or system
over-voltage BMS warnings and protections.
• Total Current = net current of the system (Negative Current means the system is discharging and
positive current means charging.
• When charging, with minimal discharge:
o Alternator: Depending on total voltage and other circumstances, the typical total current can
range from 0-100A.
o Shore Cord: Depending on total voltage and other circumstances, the typical total current can
range from 0-40A.
o Solar Power: Depending on total voltage and other circumstances, the typical total current can
range from 0-4A.
E: Cell Temperatures
• Max_Temp = the cell number (No.) with the highest cell temperature
• Min_Temp = the cell number (No.) with the lowest cell temperature
o These values will be utilized in determining charge high temperature, charge low
temperature, discharge high temperature, discharge low temperature and uneven
temperature BMS warnings and protections. (See the BMS Warnings & Protections
chart below)
• Battery Management System
o The battery contains a battery management system (BMS) that warns you and protects the
battery.
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