We got the ah and wh functions working. All that’s left is to integrate the 4 line white on blue lcd.
All code and schematics, photo’s etc., are listed at http://groups.yahoo.com/group/arduinohome/files/volt%20amp%20watt%20hour%20meter/
Resistors for voltage divider
The Instructable is online at http://www.instructables.com/id/DIY-Amp-Hour-Meter-Arduino/