So I figured out the lithium content I think:
The battery pack is this one:
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2665
It is made up of 12 of these:
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=945
The small cells have 2.3 Ah each. So the rule for lithium content is the following:
Lithium content = 0.3 x 2.35 Ah x 12 = approx. 8g Lithium.
This amount is allowed for rechargeable batteries to take on as carry-on on flights.
If the content is greater than 8g, but less than 25 g, the battery must be in a suitable container that prevents and contains short circuits etc, so I think even larger Li Ion batteries should be ok.
The official quote I found on the web (I think it is IATA or something) is
"Consumer electronic devices containing lithium or lithium ion cells or batteries, such
as watches, calculating machines, cameras, cellular phones, lap-top computers,
camcorders, etc., when carried by passengers or crew for personal use. Spare batteries
must be individually protected to prevent short circuits and carried in carry-on baggage only.
In addition, each spare battery must not exceed the following quantities:
a) for lithium metal or lithium alloy batteries, a lithium content of less than 2 g; or
b) for lithium ion batteries, an aggregate equivalent lithium content of less than 8 g.
Lithium ion batteries with an aggregate equivalent lithium content of more than 8 g but not
more than 25 g may be carried in carry-on baggage if they are individually protected so as
to prevent short circuits and are limited to two spare batteries per person. "
I will have this statement with me and will take my HID (light head and can and battery) into my carry-on. This way I can comment if they object to something at the security check.
I also read that the allowance might be increased soon, since new consumer electronics will also pack more powerful batteries that exceed these numbers soon.
Here is the link to the IATA list:
http://www.iata.org/NR/ContentConne...dangerousgoods/file/Table2.3.AEnglish2005.pdf
Alex