Hello
My Canon 480CDS keeps giving me a cmos battery bad error even with a new cmos batt. I had it soldered for me at a shop so I thought, "The connectors may be backwards" So I reversed them and the batt still won't work.

If I read the GTA (Guide to Operations) right I should let the unit stay powered to charge up the cmos batt. Is this true or do I need to chunk the battery and sell what's left on Ebay as a junker?
Thanks
Kturner