A friend dropped off a non-working Hamilton Pulsar yesterday. Upon opening it I found both #357 batteries dead. But it's not clear which side of the batteries goes down on the left side, the writing has faded or worn away. The right side is POS down. As received the POS was up on the left side, as in the pictures. I think the left side is the same, POS down, kindly verify. Also, are #357 batteries correct?