Mikroelektronika d.o.o.
SKU: MIKROE-5019BATT-MON 2 Click Board
BATT-MON 2 Click Board
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Key Features
- Low power consumption, ModelGauge™ m5 algorithm, internal current sensing, supports Li+ and variants, battery pack temperature sensing, no calibration required, alert indicator, and more
- Based on the MAX17262 - 1-Cell fuel-gauge IC from Analog Devices
- Can be used for various applications such as health and fitness monitors, terminals, home, building automation, sensors, toys, and more
- mikroBUS: I2C Interface
The BATT-MON 2 Click Board™ is a compact add-on board representing a battery monitoring solution. This board features the MAX17262 from Analog Devices, 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.
The BATT-MON 2 Click Board™ is supported by a mikroSDK-compliant library, which includes functions that simplify software development. This Click board™ comes as a thoroughly tested product, ready to be used on a system equipped with the mikroBUS™ socket.
How Does The BATT-MON 2 Click Board™ Work?
The BATT-MON 2 Click Board™ 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.
The BATT-MON 2 Click Board™ 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 labelled TH.
The BATT-MON 2 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.
SPECIFICATIONS
| Type | Battery charger |
| Applications | Can be used for various applications such as health and fitness monitors, terminals, home, building automation, sensors, toys, and more |
| On-board modules | MAX17262 - 1-Cell fuel-gauge IC from Analog Devices |
| Key Features | Low power consumption, ModelGauge™ m5 algorithm, internal current sensing, supports Li+ and variants, battery pack temperature sensing, no calibration required, alert indicator, and more |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the BATT-MON 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
| Notes | Pin |  |
Pin | Notes | |||
|---|---|---|---|---|---|---|---|
| NC | 1 | AN | PWM | 16 | NC | ||
| NC | 2 | RST | INT | 15 | ALR | Alert | |
| NC | 3 | CS | RX | 14 | NC | ||
| NC | 4 | SCK | TX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | SCL | I2C Clock | |
| NC | 6 | MOSI | SDA | 11 | SDA | I2C Data | |
| Power Supply | 3.3V | 7 | 3.3V | 5V | 10 | 5V | Power Supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| LD2 | ALR | - | Alert LED Indicator |
| JP1 | VIO SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
BATT-MON 2 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 5 | V |
| Battery Voltage Range | 2.3 | - | 4.9 | V |
| Battery Capacity | 0.1 | - | 6 | Ahr |
| Operating Temperature Range | -40 | +25 | +85 | °C |
Software Support
We provide a library for the BATT-MON 2 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for the BATT-MON 2 Click Board™ driver.
Key functions
-
battmon2_get_battery_voltageThis function reads the battery voltage in mV. -
battmon2_get_battery_currentThis function reads the battery current in mA. -
battmon2_get_battery_percentageThis function reads the battery remaining SOC percentage.
Example Description
This example demonstrates the use of the BATT-MON 2 Click Board™ by monitoring the measurements of battery voltage, current, capacity, percentage, time-to-empty or time-to-full, as well as the chip internal temperature.
void application_task ( void )
{
float voltage, capacity, percentage, current, die_temp;
if ( BATTMON2_OK == battmon2_get_battery_voltage ( &battmon2, &voltage ) )
{
log_printf ( &logger, " Voltage: %.1f mV rn", voltage );
}
if ( BATTMON2_OK == battmon2_get_battery_current ( &battmon2, ¤t ) )
{
log_printf ( &logger, " Current: %.1f mA rn", current );
}
if ( BATTMON2_OK == battmon2_get_battery_capacity ( &battmon2, &capacity ) )
{
log_printf ( &logger, " Capacity: %.1f mAh rn", capacity );
}
if ( BATTMON2_OK == battmon2_get_battery_percentage ( &battmon2, &percentage ) )
{
log_printf ( &logger, " Percentage: %.1f %% rn", percentage );
}
if ( current > 0 )
{
uint32_t time_to_full;
if ( BATTMON2_OK == battmon2_get_battery_ttf ( &battmon2, &time_to_full ) )
{
log_printf ( &logger, " Time to full: %uh %umin %usec rn", ( uint16_t ) ( time_to_full / 3600 ),
( uint16_t ) ( time_to_full % 3600 ) / 60,
( uint16_t ) ( time_to_full % 60 ) );
}
}
else if ( current < 0 )
{
uint32_t time_to_empty;
if ( BATTMON2_OK == battmon2_get_battery_tte ( &battmon2, &time_to_empty ) )
{
log_printf ( &logger, " Time to empty: %uh %umin %usec rn", ( uint16_t ) ( time_to_empty / 3600 ),
( uint16_t ) ( time_to_empty % 3600 ) / 60,
( uint16_t ) ( time_to_empty % 60 ) );
}
}
if ( BATTMON2_OK == battmon2_get_die_temperature ( &battmon2, &die_temp ) )
{
log_printf ( &logger, " Internal temperature: %.2f C rnn", die_temp );
}
Delay_ms ( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.BATTMON2
Additional Notes and Information
Depending on the development board you are using, you may need USB UART Click Board™, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.
MIKROSDK
The BATT-MON 2 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
BATT-MON 2 Click Board
Frequently Asked Questions
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