I waited about 2 weeks I think, then another week for them to arrive. I already had 2 eflite batteries so I wasn't *that* impatient. I have heard great things about the Loong max batteries as well:

http://www.hobbycity.com/hobbycity/s...idProduct=5607

If you look below stock bar, you will see their estimated stock date. For Loong Max it's late March early April so these bad boys may be in soon.

Zippy says late March. I'd just sign up for the email reminder for both and you should be set. I suppose you could go ahead and buy them - but then you might be looking at two different shipments, etc. or buy one batt and the other gets stock first.

Worth the wait though - 2 for the price of 1!