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Product Description: Li-Pol / Li-Ion / Li-Fe 5V bq25185 USB Type-C / DC / Solar Panel Battery Charging Module - Adafruit 6091
The Adafruit Battery Charging Module is an excellent upgrade for the older MCP73831 series. At the heart of the board is the bq25185 chip , which supports single-cell batteries with a nominal voltage of 3.7V (maximum 4.2V) and Li-FePO4 cells with voltages from 3.2V to 3.65V . It allows for powering via the USB Type-C port or via dedicated DC pads supporting input voltages from 5V to 18V . Using a photovoltaic panel , the charger dynamically adjusts current draw, preventing voltage drops. The Power Path system intelligently distributes power between battery charging and direct power to the receiver. Additionally, the built-in regulator protects connected electronics by limiting the output voltage to a maximum of 4.5V. Numerous thermal and current protections, as well as a built-in safety shutdown that operates for 6 hours, enhance safety.
Li-Pol / Li-Ion / Li-Fe 5V bq25185 USB Type-C / DC / Solar Panel Battery Charging Module - Adafruit 6091.
The module allows projects to be powered from various sources, automatically optimizing energy consumption from solar panels.
Main features of the module
- bq25185 controller : a modern charging system from Texas Instruments for single-cell batteries
- Li-Ion, Li-Pol and Li-FePO4 battery support : ability to work with popular cells used in portable electronics
- USB Type-C input : convenient 5V power supply from a computer, power supply or wall charger
- DC or Solar Panel Input : Supports external power supply from 5V to 18V
- Adjustable charging current : can be set to 250 mA, 500 mA or 1 A using jumpers
- Power path management : simultaneous powering of the receiver and charging of the battery
- LOAD output to 4.5V : regulated power output for connected system
- LED indication : LEDs indicating charging, error and power supply
- 10 kΩ thermistor input : allows you to monitor the battery temperature while charging
Battery charging module pins and interfaces
The module is equipped with a USB Type-C connector, a DCIN input for a power supply or solar panel, and two 2mm JST-PH connectors labeled BATT and LOAD. A single-cell Li-Ion, Li-Pol, or Li-FePO4 battery is connected to the BATT connector, while the LOAD connector powers the actual electronics . The board also includes battery voltage and output measurement fields, as well as S1 and S2 status pins, a CE input for controlling the system operation and a TH pad for connecting a 10 kΩ thermistor.
Two independent JST-PH connectors with a pin spacing of 2 mm are used to connect the battery and the energy receiver.
Elements included in the set.
Charger technical specifications
- Charging system: Texas Instruments bq25185
- Supported batteries: Li-Ion / Li-Pol / Li-FePO4 1S
- Li-Ion / Li-Pol battery voltage: 3.7 V nominal, 4.2 V maximum
- Li-FePO4 battery voltage: 3.2 V nominal, 3.65 V maximum
- USB input: USB Type-C, 5V
- DC Input/Solar Panel: 5V to 18V
- Charging current: 250 mA, 500 mA or 1 A
- Maximum input current: 1 A
- Maximum instantaneous LOAD output current: up to 3 A
- LOAD output voltage: maximum 4.5 V
- Connectors: USB Type-C, 2 x JST-PH 2 mm (BATT, LOAD)
- Operation indication: CHRG, FAULT, PWR LEDs
- Thermistor input: 10 kΩ
- Power Path Management: Yes
- Protection: against overvoltage, short circuit, overload, overheating, too low battery voltage and charging process errors
- Charging time limit: 6 hours
- Dimensions: 32 x 26.3 x 7.2 mm
- Weight: 4 g
Contents of the set
- 1x Li-Pol / Li-Ion / Li-Fe 5V bq25185 USB Type-C / DC / Solar Panel Battery Charging Module - Adafruit 6091
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