I'm flying to Lanzarote via easyjet soon with my son who is taking his bike (in a bike carrier which will also have my SOTA pole and kite) so I asked their customer service for guidance about the rest. They replied....
"I am pleased to hear that you will be travelling with us as planned.
I have included all the information in relation to the batteries of which you would like to take with you onboard. All the batteries below can be placed in to your cabin luggage.
Lithium battery powered electronic devices Lithium ion batteries for portable (including medical) electronic devices, a Wh rating exceeding 100 Wh but not exceeding 160 Wh. For portable medical electronic devices only, lithium metal batteries with a lithium content exceeding 2 g but not exceeding 8 g.
Spare Lithium batteries Lithium ion batteries for portable (including medical) electronic devices, a Wh rating exceeding 100Wh but not exceeding 160 Wh. For portable medical electronic devices only, lithium metal batteries with a lithium content exceeding 2 g but not exceeding 8 g. Maximum of two spare batteries in carry-on baggage only. These batteries must be individually protected to prevent short circuits.
Portable electronic devices (including medical devices) containing lithium metal or lithium ion cells or batteries such as watches, calculating machines, cameras, cellular phones, laptop computers, camcorders, etc., when carried by passengers or crew for personal use. Batteries must not exceed 2 g for lithium metal batteries and 100 Wh for lithium ion batteries.
All spare batteries, including lithium metal or lithium ion cells or batteries, for such portable electronic devices must be carried in carry-on baggage only. These batteries must be individually protected to prevent short circuit.
It doesn't mention anything about the NIMH packs for my FT817, (one in it, one spare, both 2.6 A/Hr) but it does cover the Toshiba laptop battery packs that I use (8.2 A/Hr, 10.8 V, 98 W/Hr) which I use and charge via an adaptor plug I made. I'm also taking a brick SMPS (12 v 4 amp) and a multi-function charger for RC batteries, plus a T100 TU, SWR meter, Mini-60 aerial analyser, mini laptop/tablet, patch leads, 4:1 balun and linked dipole/coax feeder/sundry wires and a couple of Norcal doublets. All in all an X-ray machine operators nightmare...... I will have a paper copy license with me, and a copy of the EJ email.
Anyone able to offer any other guidance, as I obviously don't want to upset anyone and not be allowed to board with my gear.....