Memory parity errors on battery power only?!?!?

A client's laptop recieves memory parity errors on battery power only. No errors on dock or plugged in. Both memory and planar have been replaced still same issue. Any ideas will be appreciated.

dzastrow, welcome to the forum,
does the same occur using safe mode?
It would also be helpful if you could post which ThinkPad and Operating System you have, even better post the Type and Model Number. Knowing which system build you have will help members to help you. If it ends in CTO please provide some details about the ThinkPad. Please do NOT post your s/n.
Andy  ______________________________________
Please remember to come back and mark the post that you feel solved your question as the solution, it earns the member + points
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