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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 job of a battery monitor is to report on 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 manufacture 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. 7 AUX-2 Positive orange/Black AUX-1 Positive orange Power (+) power To Battery Negative (-) To loads (-) Inaccuracy is introduced that is multiplied with each additional cycle that does not reach full 100% charge
Balmar has combined recent technology advances to introduce a next generation battery monitor. The SG200 is quite simply the most accurate battery monitor available today. Balmar has combined the best features of its 1st generation SmartgaugeTM with many advantages of a shunt-based amp-hour counting system. Further, we’ve designed a device architecture which facilitates multiple Displays or multiple SmartShunts to be added to the network-allowing the boater to monitor multiple energy storage banks simultaneously from multiple locations.
In addition, the SG200 Color Display is easy to read, configurable and fits any standard 2 1/16″ gauge socket. Now you can determine your battery(s) condition from anywhere on the vessel or vehicle with multiple Displays, or simply add the optional Bluetooth® Smartphone App to keep information in your pocket!