Pre Arm battery not calibrated

Using APM 2.8 on mission planner. Keep getting voice message. How can I get this sorted please.battery voltage is showing ok on flight data screen no current shown ,cannot arm quadcopter. blue and red lights flashing.yellow continuously and orange fast flashing.neo 6 M round one green permanently on blue flashing. Can somebody please help. This is my first APM Board.

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  • Check your solder connections on the apm board. I picked up am apm2.8 and couldn't get telemetry or arming to work. I looked at the bottom of the board and found no less than ten bad solder connection. A lot of them bridged pins. You'll need a pretty powerful magnifier. I went ahead and cleaned up every solder connection. I took a few days, but it fixed all the glitches.
  • Are you sure its Battery Not Calibrated?  I looked through this  http://copter.ardupilot.com/wiki/prearm_safety_check/ and I don't see that safety check...

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