So, Speaking of batteries...just spent over an hour in the newbies bat section. Left me with a lot of confusion and new found concerns.
Sounds like you read the right stuff! IMO, having a reasonable fear of batteries is similar to the fear of riding a bike in traffic - both will keep you healthy!
And if you have questions, please ask! Most of us can help find answers!

I bought a canister though, since our upright is still alive and our canister recently died. I hope I made the right decision.
