Loading 3D model… large boards can take a moment.
Click here to purchase one from the Adafruit shop
PCB files for the Adafruit bq25185 USB / DC / Solar Lithium Ion/Polymer Charger.
Format is EagleCAD schematic and board layout
We're always on the look out for better ways to make projects portable: being able to charge your battery in the most convenient manner will let projects run no matter what power is available. The Adafruit bq25185 USB / DC / Solar Charger Board uses the new bq25185 is a nifty charger chip which has a lot of flexibility for different kinds of batteries (LiPoly, LiIon or LiFePO4), charging rates (250mA, 500mA, or 1A) and power sources (USB, DC or solar). It's also a great value, so it's a good upgrade from MCP73833 or MCP73831-based charger boards.
To let folks really explore what this chip can do, we made a basic breakout board with all the things we find most useful: two ways to power/charge including a solar-friendly DC input, adjustable current and voltage, power path management, and status and control I/O.
This board is pretty much plug-and-play. Change any jumpers you like and then connect your battery to the BATT port, and the LOAD goes to your circuit. Don't forget the LOAD will never go above 4.5V, but it can go as low as 3.0V if the battery is nearly empty. You can monitor the voltage on the battery and load via the secondary pads on the right side, if necessary.
To use with solar, pick up a 5~7V solar panel, and either cut the connector off to wire it directly, or use a 2.1mm adapter cable plus a 2.1mm terminal block to get two wires for the DC Input port.
If you need a board with higher charge current or a DC plug already on-board, check out the bq24074 which has up to 1.5A charge rate and a on-board 2.1mm DC jack.
Adafruit invests time and resources providing this open source design, please support Adafruit and open-source hardware by purchasing products from Adafruit!
Designed by Limor Fried/Ladyada for Adafruit Industries.
Creative Commons Attribution/Share-Alike, all text above must be included in any redistribution. See license.txt for additional details.
No comments yet. Be the first to ask about this board.