so what is the story with fitting a lithium battery to a dyna , any dramas ?

they have a few positives , but I'm not sure how they will be long term.

This is the one you want unless you running high comp or big cube.

They do have a positive, but don't forget there is a negative side to these lithium batteries as well.

In what capacity wg?

longevity , charging a different style of battery . if anyone has had a negative or positive 

I think if you need a battery, want to try something new and can afford it. Get one. Be the first on this forum and review it after 12 months. 

We are half way towards a lithium battery 

Recently had to replace my 4yr old battery and was toying with the idea of going lithium, but can't understand how we're told you need a special charger to maintain them, yet you put it your bike with the original charging system?

Watch the ricks video..basically you need.a lower output regulator. Only about .5 volts just so u dont boil the lithium. Them AA batteries inside cook easy.. If u think im loopie look in u you tube tesla battery.... But. Understand the fire safety risk with theese batteries they reignite [fire]  hard too put out. so check your insurance policy hhaa