Without him no

The other day my partner left the store to do some repair. As I picked up in passing, left a universal laptop charger at home for a client, who had lost theirs. The client was not at that time.

Cundo returned, we called. I did not know what values to put in the charger. And I had a good time on the phone. But without seeing it, do not say that connector should use, or the amperage or voltage. I’ve had some bad experiences with the universal laptop chargers. If looking good voltage, amperage and polarity, we were wrong, as if to indicate how to do it by phone. No.