There are multiple forum posts on this topic, as well as the paper insert that comes with the saber if you get a Li Ion Buckpuck setup. The Li Ion rechargeables are best not left in the saber. There is a tiny drain even with the batteries off, and they can 'forget' how to charge if left to completely discharge. Leave on the counter, or preferably plugged in on the charger.
Pretty much. Although, the little flyer should come with every US purchase (at least ones that have sabers in them) - I ordered 3 separate times, twice for sabers that use AAA's and got the flyers every time.