In this particular case I recorded it :-) (with the permission of all involved) so that in the event there was some discrepancy about who said what I could refer to the recording.
Not really, there was an interesting digression into the question of using/installing "industrial equipment" (I've always wanted a CNC machine center for my garage.) We have an "industrial" washer and dryer pair (but that was ok). No sense turning this battery example into an insurance thread.