Coin cell compartments/doors

[EngTechUK]

Hi all,

For consumer electronic applications that are powered by coin cells (e.g. cr2032 and the like - although question still stands for other battery types) - is it normal to use any off the shelf parts/geometries for the compartment or door?

For the compartment, I can see that this might be tied more into the product design, but battery compartment doors must end up so similar across designs that I thought generics might exist/be viable?

Thanks very much for any information.

 

[IRstuff]

Never seen that to be the case. The door is part of the case, and the case is different in almost all instances. My gripe is usually with the itty-bitty Phillips screw that holds down the door in the cases where the designer was too lazy to come up with a non-tool approach to retaining the door.

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[EngTechUK]

Thanks IRstuff - Agreed on the gripe around prolific use of fasteners - even more so as I assume it's more expensive to produce/assemble compared to a snap type closure...

It seems strange to me - whilst you're right in that the door is doubtless part of the case, I find myself recreating the same flat, snap type door that I'm sure exists with tiny variations across thousands of different products - just doesn't seem very value-add.

 

[IRstuff]

There is little value-added, until the supply chain croaks; then, management asks why we didn't buy everything from the same manufacturer that supplies the cases. Presumably, there's an ever so slight reduction in inventory control cost

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[3DDave]

The requirement to use a screwdriver on coin cell doors is driven by the desire to avoid injuring or killing small children who tend to open anything they can and then swallow the cells.