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====== THIS TUTORIAL HAS NOT YET BEEN REVIEWED, PLEASE DO NOT USE UNTIL IT HAS ======

====== LiPo Charger Shield Tutorial ======

===== Product Description: =====

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The LiPo Charger Shield allows you to power your Oak with a single-cell 3.7V Lithium-ion Polymer battery and charge it via the Oak's USB port.  The kit includes 200mAh LiPo battery.

This is an unassembled kit and requires basic soldering. This is designed for use with the Oak development board, which is not included.

=====Parts:=====

^ Part       ^ Quantity ^
| LiPo Charger Shield PCB|1|
| 200mAh Single Cell LiPo Battery|1|
| 2-pin JST PH RA Male Connector| 1|
| 1x3 pin male 0.1" pitch header| 1|
| 1x6 pin male 0.1" pitch header| 1|

**Soldering:** If you are new to soldering we recommend the following tutorials:
Soldering Basics (http://www.sparkfun.com/tutorials/106) and Soldering Crash Course from the folks at Sparkfun (http://www.sparkfun.com/tutorials/354).
How to solder from the Curious Inventor: http://store.curiousinventor.com/guides/How_to_Solder

Adafruit has this excellent guide that starts with the tools needed and then shows detailed pictures, including some of the common problems that beginners experience (http://learn.adafruit.com/adafruit-guide-excellent-soldering)

**We assume for these assembly instructions that you know the basics of thru-hole soldering. If you don't check out the links above, these boards are very easy to solder - we promise!**

===== Assembly: =====

Empty kit bag and verify contents.

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The LiPo Shield PCB thru-holes we will be using for the Oak are the 2-pin battery connector and the 3-pin male header for VCC/GND/VIN.  The other thru-holes (for 2-pin and 6-pin headers) are for compatibility with other Digistump development boards. **NEEDS VERIFICATION**

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The thru-holes for the 2-pin battery connector are slightly smaller than the others.  Notice how there are three holes for the 2-pin connector.  This allows you to mount the connector either on the bottom or the top of the PCB.  Pay careful attention to the labels on the PCB to determine which thru-holes to use for the 2-pin connecter.

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**IMPORTANT NOTE:** It is highly recommended that the 2-pin connecter be mounted on the //top// of the PCB.  The Oak's included female headers would obstruct the connect if mounted on the bottom.

Solder the 2-pin JST connecter and 3-pin male header onto the PCB as pictured.

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Connect the LiPo shield to the Oak's 3-pin VCC/GND/VIN female header.  Then plug in the battery to the LiPo Shield 2-pin connecter and connect the Oak's USB power to charge.  The include LiPo battery ships with some charge, but will still need to charge for about an hour.

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Your LiPo Charger Shield is complete!

===== 0.5A Charging: =====

The bottom of the LiPo Charger Shield PCB has jumper pads to enable 0.5A charging.  By default, the shield charges at 0.1A.  0.5A will charge batteries faster, however with batteries less than 500mAh such as the one included in the kit, 0.5A charging will shorten the life of the battery.  Therefore it is recommended to leave the shield at the default charging current of 0.1A for use with the included 200mAh battery.

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=====Usage:=====

CAUTION: Using a damaged battery, reversing battery polarity, shorting any part of the power system while powered by battery, or in any other way using a LiPo battery improperly can cause serious injury, death, and/or fire.

Use only single cell LiPo batteries with this shield.
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