-- Serial API callback when data are available/received(and when send buffer is available)
-- Serial API instance several serial ports can be used
+Lipo
+----
+Sparkfun Polymer Lithium Ion Battery 850mAh:
+https://www.sparkfun.com/products/341
+Lipo Cell spec:
+https://www.sparkfun.com/datasheets/Batteries/063048%20Li-polymer.pdf
+Protection spec:
+http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/BatteryProtection.pdf
+ min typical max
+over-charge 4.255 4.280 4.305
+over-charge discover? 4.030 4.080 4.130
+over-discharge 2.827 2.900 2.973
+over-discharge discover 3.022 3.100 3.178
+
+ADC voltage monitor: voltage divider 10K+10K(0.5)
+ ADC=V*0.5/2.56*1024
+ V ADC
+ ------------------
+ 4.20 0x347(839)
+ 3.10 0x26b(619)
+