Retired Product

This product has been retired from our catalog and is no longer for sale. This page is made available for those looking for datasheets and the simply curious.

Creative Commons images are CC BY-NC-SA 3.0

Description: This is the retail kit version of our popular USB LiPoly Charger, if you are looking for the non-retail version without the 850mAh battery it can be found here. If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The USB LiPo Charger is a basic charging circuit that allows you to charge 3.7V LiPo cells at a rate of 500mA or 100mA. It is designed to charge single-cell Li-Ion or Li-Polymer batteries.

The board incorporates a charging circuit, status LED, selectable solder jumper for 500mA or 100mA charging current, external LED footprint, USB input, two pre-installed JST connectors for SYS OUT and BATT IN, and (back by popular demand) a barrel jack connector.

There is also a ‘SYS OUT’ with a pre-installed JST connector which allows you to connect the charging circuit directly to your project so you don’t need to disconnect the charger each time you want to use it.

Also included is a 850mAh LiPo battery. This is the highest energy density currently in production. Each cells outputs a nominal 3.7V at 900mAh! Comes terminated with a standard 2-pin JST connector - 2mm spacing between pins. Battery includes built-in protection against over voltage, over current, and minimum voltage.


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Customer Comments

  • Would it be possible to us the lipo fuel gauge on the sys out pin and have accurate measurements?

  • Hi Can I parallel charge 150mah 1s lipos with this charger

  • Hi,

    Does the SYS OUT pins allowed me to use external power supply via USB or barrel jack directly to my arduino, and automatically switch to the Battery power supply if there’s no more power supplied by the external power supply ??

  • It is not mentioned here, but you need a walwart of “A supply voltage of [VREG (typical) + 0.3V] to 6V is recommended”. (from Page 11 of the MCP73831T datasheet) There is a schottky diode in series with the barrel jack connector so, in this case, the voltage range for the walwart is [VREG(typical) +.5V] to 6.2V, (assuming Diode Vf = .2V).

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