6
7
AUX-2 Positive
orange/Black
AUX-1 Positive
orange
Power (+) power
T
o Battery
Negative
T
o loads (-)
Introduction
Introduction
The SG200 is a battery monitoring system. It’s purpose is to provide the user
with continuous information on various parameters of a battery or battery-bank,
and of direct current (DC) usage in the system.
Specifically, it can show:
Parameter
Unit
Voltage
Volts (V)
State of Charge (SoC)
Percent (%)
State of Health (SoH)
Percent (%)
Current (A)
Amperes (A)
Time Remaining
Hours: Minutes
Voltages for two separate Auxiliary
batteries
Volts (V)
What is a battery monitor, and why is it important?
Who would argue that it is not good to know how much power is left in a
battery? It is like a fuel gauge, and you would not drive a car or boat without
knowing how much fuel is remaining in the tank. Enter the battery monitor. The
most important function of a battery monitor is to report the State of Charge
of a battery or battery bank. The State of Charge (SoC) is a percentage value
showing what percentage of the battery’s capacity is remaining.
The SG200 very accurately calculates the State of Charge, and it does so by
incorporating a new feature: State of Health (SoH). State of Health is another
percentage value, that compares the design capacity of a battery, or the
capacity the battery’s manufacturer says it should be when new, with it’s actual
capacity, which degrades over time as a battery ages.
Accurate and continuous measurement of SoC and SoH is a breakthrough
in battery monitoring. As the battery ages, the monitor does not get less and
less accurate. Instead, the SoC value is always a percentage of the calculated
capacity taking into account the aging and other detrimental effects on a
battery’s capacity.
The SG200 also is unaffected by other issues inherent in all other shunt-based
systems, like accuracy drift over multiple partial state of charge cycles. Simply
put, traditional shunt-based products need to reach 100% charge each
cycle. Inaccuracy is introduced that is multiplied with each additional cycle
that does not reach full 100% charge.
For more information about issues that effect battery health and capacity,
read the Appendix entitled “
Factors Affecting Battery Life
SmartLink cable - use
either connector
