User's Manual

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Figure7‐1:PoweringfromUSB(YellowBlocksShowJumpersPlaced)
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7.1.2 BatteryPower(2x1.5V)
TheLaunchPadcanalsobepoweredfromanexternalbatterypackbyfeedingthevoltageontheJ21
header.Thisinputfeaturesreversevoltageprotectiontoensurethattheboard isnotdamage d dueto
anaccidentalreversevoltage.Takethefollowing pre cautionswhileusingtheboardwithabattery.
1)
RemovetheUSBcable. 
2) Plug‐inthebatterypackonJ20withcorrectpolarity(seeFigure7‐2below).