Did anybody encountered problem with carrying spare batteries for your camera during TSA inspection at the airport? I am interested of knowing specifically with Mk3 because the Li-Ion are quite big compare to the Canon xxD & XTi series.
This was hashed over last year when the rules were about to go into effect.
The carry-on limits do not apply to rechargeable Lithium batteries used in still cameras. They apply to the extended-life versions (not even the standard versions) of the huge battery packs used to power shoulder-mounted television cameras. The lightest of these batteries weighs about 2 pounds (about a kilo), and most weigh more than that.
The only things that you need to know are:
1) don't pack loose lithium batteries in your checked luggage. Put them in your carry-ons.
2) When you put loose lithium in your carry-ons, you should make an attempt to protect the contacts from shorting out. Put them in boxes, baggies, or whatever.
And so far, I haven't seen a single report of anyone even being asked about their batteries. It's been a total non-event.
I've flown a few times since the announcement with a couple Mark III cameras and two spare batteries. So far the batteries have not drawn any additional attention. As Doug mentions, Li-ion battery packs for DSLRs don't even come close to the power output limits.
And about 6 set of 4 AA & 1 set of 4 AAA rechargeables inside protected battery containers.
SV950 light with a HUGE brick for a battery (5 pounds) checked in.
The Li-on batteries were individually wrapped in plastic bags. No problems here with TSA. As long as there are no probability of any of the batteries shorting out by contact, you should be fine. You'd be stopped monentarily by the customs at the x-ray at your destination about your massive photo gear collection, but you'd be fine and nothing to worry about.
