battery switching?

[jesse@spine.com (jesse montrose)]

I'm considering a second battery for my floppy bay, and I'm wondering about
the logistics.  

Do you manually flip the power switches on the batteries to swittch batteries?  
Do they both get charged?  

Or only the one that's turned on?

Thanks..
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jesse montrose         jesse@spine.com http://www.hooked.net/people/jesse
                     I don't recycle.  I'm a consumer, damn it, I consume