UBC220XLT memory retention

[CEW4]

Good morning,

First time poster here, hello everyone!

My old UBC220XLT has developed an issue: When I took it out of the drawer after quite some time of storage with the battery disconnected, I found that its memory was completely wiped.

Does anyone know how this model is designed? Is there a buffer battery inside (which might have been depleted and needs to be changed), or is there a cap or something for short-time power storage which just hasn't seen an external power source to recharge itself for a while?

In other words, is the memory loss due to "old age" or does the device always need to be stored with a battery connected by design?

Regards

 

[pro92b]

From page 5 of the owners manual:

Memory Backup The stored channels are retained in
memory for at least 3 days, and typically 14 days, when
the Battery Pack is removed from the scanner.

This implies that there is a capacitor for memory backup.

 

[CEW4]

That's it. Thanks for pointing me.