BATT-MON 2 Click is a compact add-on board representing a battery monitoring solution. This board features the MAX17262 from Analog Device, an ultra-low power I2C-configurable fuel-gauge IC with implemented ModelGauge™ m5 algorithm. The MAX17262 monitors a single-cell battery pack (best performance for batteries with 100mAhr to 6Ahr capacity), providing precision measurements of current, voltage, and temperature, and supporting internal current sensing for up to 3.1A pulse current. The battery pack's temperature is measured using an internal temperature sensor or external thermistor. This Click board™ is suitable for Li-Ion battery monitoring for various applications such as health and fitness monitors, terminals, home, building automation, sensors, toys, and more.
BATT-MON 2 Click is based on the MAX17262, an ultra-low power fuel-gauge IC that implements the ModelGauge™ m5 algorithm from Analog Devices. It provides, at the same time, tolerance against battery diversity for most lithium batteries (providing good performance for most cell types) and applications. The MAX17262 features internal current measurement for up to 3.1A pulse currents and accurately measures voltage, current, and temperature to produce fuel gauge results. It shows the best performance for batteries with 100mAhr to 6Ahr capacity.
The ModelGauge™ m5 EZ algorithm combines the short-term accuracy and linearity of a Coulomb counter with the long-term stability of a voltage-based fuel gauge, along with temperature compensation, to provide industry-leading fuel-gauge accuracy. The MAX17262 automatically compensates for cell aging, temperature, and discharge rate, providing accurate state-of-charge in percentage (%) and remaining capacity in milliampere-hours (mAh) over a wide range of operating conditions.
As the battery approaches the critical region near empty, the ModelGauge™ m5 algorithm invokes a unique correction mechanism that eliminates errors. The MAX17262 provides an accurate estimation of time-to-empty and time-to-full through three methods for reporting the age of the battery such as reduction in capacity, increase in battery resistance, and cycle odometer.
BATT-MON 2 Click communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings with a maximum frequency of 400kHz. An alert/interrupt function is also available that outputs an interrupt signal to the ALR pin of the mikroBUS™ socket indicating fuel-gauge alerts. This feature is visually presented by a red LED marked as ALR. Besides, this Click board™ also features battery pack temperature sensing through an integrated temperature sensor or an external NTC thermistor which can be connected to the onboard terminal labeled TH.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VIO SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
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