I know this topic comes up now and again and I've read threads for about 2 hours BUT - I still don't get it -

can one use a 5V 1A charger on the PRS-600? all indications are that the correct charger should be 5V 2A but I already have a charger from my PRS-500 that is 5V 1A.
Is the difference that the 1A will charge at a slower rate? will I hurt my brand new PRS-600 by using the 1A? I don't get why the Sony chargers are almost as big as a laptop charger...not very compact to travel with. just curious. Thanks, as always, for all of your expertise. Mary