[quote=“vk3afw, post:19, topic:10836, full:true”]
You need another battery! Two batteries would give you useful time on two summits running 20 - 40 W as well as a [/quote]
Two batteries are also almost impossible to get on board an aircraft under the new rules Essentially if you are carrying more than 100Wh of lithium batteries in carry-on, you need the permission of the captain and the airline before you travel. Not impossible, but more effort than it is worth. A 4.2Ah LiFePO4 is 55Wh or something, the 8.4Ah can’t be taken on board without permission.
You can place the batteries in checked luggage if inserted into the device, but I’d rather not have the ability for the radio to be able to be turned on, even accidentally, while airborne, given the restrictions on radio transmitters on flights.
A better option is to not spend the better part of an hour on FM at high power chasing a S2S
One of the more popular posts on my blog is called “Travelling with Lithium Batteries”, it almost has as many views as an article about volcanoes!