but your way out of date on the Lithium battery tech.
Since the Lipo4 generation arrived all the problems have disapeared (except one which I'll discuss last)
The rising heat characteristic of the early ones is long gone so the "burst into flames" of model aeroplane and computer batteries is well and truly ancient history now.
I've been using a Shorai Lipo4 Lithium on my Ducati 748 for quite a while now with no disadvantages at all.
The advantages are that they hold charge for 6 months+ easily so don't need trickle charging, sit at a static 13.2v+ so starting is easier and if discharged can usually be brought up very quickly (I used a standard 10 amp charger when my voltage regulator failed on a run and the battery eventually went down and it started the bike within 7 minutes)
Also this battery is a full 10lbs lighter than the lead acid boat anchor it replaced and about half the size.
No acid is a good thing too and the bike starts first pop every time effortlessly.
I run 7AH 4 cell Ballistic LiPo4's on the Cagiva Mito and the Daytona, they are smaller than a lantern battery and weigh 426 grams.
The Daytona one sat in the box for 3 months before installation on the first dry build, worked all the electrics for extensive testing for a further 3 months, sat at the local bike show with the parklights on for 4 hours and still had charge left so I am impressed.
Both bikes start very easy (the Daytona has TriSpark ignition) and they accept charge from standard alternators perfectly.
I'm using a 3 pase hi-output alternator and regulator from Tri-Spark on the Daytona and it all works in perfect harmony with the battery.
The only disadvantage (which I don't and won't experience where I live) is that they don't work well initially when really cold.
I'm told the cure is to turn the headlight on whilst gearing up which warms the LiPo's internally and brings the voltage up to the normal level.
Personally I love the acid free light weight, easy starts and no maintanance aspects of them even though they are more expensive than the lead acid ones.
As they become more mainstream the price will naturally drop but since my bikes are for fun and not daily beaters I can justify the extra expense.