were can I get one of these fancy things without having to order from the states, my voltage at the battery reads 13v when engine is of and when started it reads 14.20 but it seems to strugle to turn the bike over when hot, new battery yes/no

From here:

http://www.carrotcycles.co.uk/SHORAI-PO ... _1555.html

DONT think thats the one for the SD (just where I got mine), if you go to the Shorai website click KTM.....990 LC8 to get correct fitment.

Or these fine people, purveyors of the Ultrabatt as used by MotoGp, Moto2 and WSBK teams:
http://www.performanceparts-ltd.com/sto ... _Batteries
I've got one and I can't believe how tiny and light it is.

thanyou lads

I don't know as the motor is still in bits!
The battery I bought is the one they recommend for the Ducati 1198 so I figured it was OK for the SD.
Its supposed to produce 240 crank amps - whatever that means.
Apparently the issue with these batteries is you don't want to deep discharge them or over charge them; these have some sort of safety mechanism in them to prevent that from happening but I still bought the specific charger.
I just hope its worth all that money!

Ive been running 1 now for about 18 months and it stood from September last year till earlier this month in a cold damp unheated garage. Tested it with a volt meter before re fitting it expecting it to have dropped voltage slightly but it was still showing a healthy 12.3V. (and when refitted cranked the bike over with zero problems).

The only negative with Lithiums is that they may need balancing, but this only really becomes a problem if your running a total loss system (the bike does not recharge the battery whilst running, such as a race bike).

Had mine from this guy here -

http://www.ebay.co.uk/itm/LIGHT-WEIGHT- ... 5d32d3fd75

Really helpful and answered all questions i could throw at him

I had a Shorai 14 amp battery delivered from AMI Direct and after a full charge overnight (they come 90% charged anyway) it wasn't enough to turn over an '05 SD.

The guy then sent me a 21 amp model and that was massive so wouldn't fit, i would go for the 18 amp model in future (i said fook it i'll get another yuasa in the end and sent both back), just don't trust Shorai's recommendations.

From reading the instructions you need to have it on a charger/tender without the desulfating mode as it'll confuse the diagnostics in the charger.

Not sure if these guys are still making them, may be worth a contact

www.2moto.co.uk