On Thu, 14 May 2015 14:15:28 -0500, firstname.lastname@example.org wrote:
A lot of peoiple think batteries are electrical, but 98% of them are
hydraulic, either using air, water, or hydraulic oil. The fluid is
converted back in the battery and can't normally be seen when the
batteries are removed.
They probably gave you the discount for the sake of good will.
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