+ and - on HP21 calculator?

From: Chuck McManis <cmcmanis_at_mcmanis.com>
Date: Sat May 5 20:45:09 2001

Ah but the battery box is designed to take the molded HP battery unit,
which plugged into the back, rotated down and latched into the top (see
<http://www.home.mcmanis.com/hp21-back.jpg> for a picture. Since it would
be "impossible" to connect it backwards its possible the HP engineers
dismissed that possibility and said fine this will never come up.

--Chuck

At 08:22 PM 5/5/01 -0500, you wrote:
>In reverse shouldn't hurt it, just as if you put AA cells in a radio and
>they were backwards. Transistorized equipment is polarized to work so my
>guess is that it wouldn't hurt it. Charging them backwards might though.
Received on Sat May 05 2001 - 20:45:09 BST

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