Mototek agm battery sourced and fitted, cranks brilliantly', bike started soon. £47 from eBay. Yes I know it's dearer than lead acid but have good experience with agm on rt. lion was silly a idea for mecheers

Isnt hitting the start button a bit eerr harsh to warm the lipo batteries, maybe put the side lights on for a few mins thats a much safer way to treat them. I still aern't convinced by lipo, in the radio controlled world your supposed to charge and keep them in fire proof bags!
I would love a small agm battery tho, think odyssey do one, just a bit expensive for me, and theres nothing wrong with a standard battery really.
Cheers
Ian