2010 Lexus RX350 - How difficult is it to remove and replace the battery?

I am not having a problem but just purchased the RX350 and was wondering how difficult it is to remove and replace the battery.Also if there can be any problems with electrical if you disconnect the battery other than the normal items like clock, radio, gps etc going blank.

Oh ok, that's a different deal....no it's just like anything else...just get the polarity right!!! Then reset everything....At the shop, i use a memory saver that plugs into the power socket to prevent that from happening.