USB / DC / Solar Lithium Ion/Polymer Charger - v2

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Adafruit Product Code: 91513
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Power & Battery | Battery Charge Boards |

Product Description

3.7V/4.2V Lithium Ion or Lithium Polymer battery charger
Charge with 5-6V DC, USB or 6V solar panel!
Automatic charging current tracking for high efficiency use of any wattage solar panel
Use any 6V solar panel
Three color indicator LEDs - Power good, Charging and Done
Low Battery Indicator (fixed at 3.1V) with LED output
Set for 500mA max charge rate, can be adjusted from 50mA up to 1A by soldering in a resistor
Will always draw the most current possible from a solar cell - up to the max charge rate!

$18.00

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USB / DC / Solar Lithium Ion/Polymer Charger - v2 info

Make your projects to go green with USB / DC / Solar Lithium Ion/Polymer Charger - v2. This charger is a very unique design, perfect for outdoor projects, or DIY iPod chargers.

USB / DC / Solar Lithium Ion/Polymer Charger - v2 is very easy to use. Pick up any 3.7V/4.2V Li-Ion batteries, and a 6V solar panel. Plug the battery into the BATT port using a 2-pin JST cable and the solar panel into the DC jack using a 2.1mm terminal block adapter. Put the solar panel outside to start charging. You can power another project like a Mintyboost at the same time by connecting to the LOAD output port.

The carefully designed charger is designed specifically for solar charging and will automatically draw the most current possible from the panel in any light condition. Even thought it isn't a 'true' MPPT (max power point tracker), it has near-identical performance without the additional cost of a buck-converter.

Note: USB / DC / Solar Lithium Ion/Polymer Charger - v2 is for use with Adafruit Lipoly/LiIon batteries only! Other batteries may have different voltage, chemistry, polarity or pinout.

USB / DC / Solar Lithium Ion/Polymer Charger - v2 - General Specifications

3.7V/4.2V Lithium Ion or Lithium Polymer battery charger
Charge with 5-6V DC, USB or 6V solar panel!
Automatic charging current tracking for high efficiency use of any wattage solar panel
Use any 6V solar panel
Three color indicator LEDs - Power good, Charging and Done
Low Battery Indicator (fixed at 3.1V) with LED output
Set for 500mA max charge rate, can be adjusted from 50mA up to 1A by soldering in a resistor
Will always draw the most current possible from a solar cell - up to the max charge rate!

USB / DC / Solar Lithium Ion/Polymer Charger - v2 - Technical Specifications

Board Dimensions: 41mm x 33mm x 2mm
Thickness with 2.1mm SMT Barrel Jack: 12.6mm

Documents

MCP73871 datasheet

Schematic image on github

Detailed tutorial on how to use this charger

References

Adafruit Web Site: https://www.adafruit.com/products/390

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