Woodstock battery holder

[PANAMATIK]

Two hints for your woodstock battery holder. Perhaps already known, but I didn't find anything about it.

I sometimes experience that a battery holder in one Woodstock calculator works and when inserting the same in another the display remains dark. This is critical, because if the batteries don't have contact you might run easier into the issue, that you try to charge the batteries and accidentally switch ON the calculator, but the battery contact is necessary to buffer the charger voltage and avoid damage.

Obviously the height of the contact pins can be different in some calculators. Todays AA batteries could have a bigger plus pole and don't fit into the case. They are 1 mm too high. To get them sit deep enough the plus pole then is recessed, in both cases there is no contact.

You can easily avoid this problem just by filing some material from the plus pole of the battery holder.

before after

Also there is an easy way to replace the batteries, when cutting only the front side of the middle peg. You just can bend it upwards to get to the batteries.

Bernhard