Here in Aus I have purchased the SSB Lithium batteries both for my own bikes and those that I refurbish.
I read with interest the "advantages" of the lead acid battery and about the only one I can add is that they do a much better job at holding stuff down from blowing away in the shed(garage/workshop) because they are 3 to 4 times heavier than a Lithium.
First time I was posted an SSB battery I thought they had posted an empty casing by mistake THATS how light they are.
Also std FE450 550 and 650 batteries put out about 80-100 CCA and when old struggle to turn my 650 over. The lithium with 220 CCA packs double the punch with a third the weight and is supposed to last multiple times longer (yet to be tested) and doesn't run down as badly as lead acids when the bike sits for extended periods.
I remain amazed that people spend $750-$1200 for a full Ti system and part of most peoples justification is the weight saving (same pipe in stainless would flow exactly the same volume of exhaust right !) but wont stump up an extra $100 here in Aus for a LI battery that instantly saves 2 - 2.5kg......just f***ing amazing.
Here in AUS 113x85x70mm (I think they are) SSB branded Lithium batteries are $159 and lower CCA versions are available for $99- $109.
Oh just for the record I have NO affiliation at all with manufacturer or any distributor whatsoever I have just had a great run with 4 of their batteries.
PART NUMBER LH7L-BS
BATTERY TYPE: High Performance Lithium
VOLTAGE 12 Volts
cold cranking amps) 220
Terminal Height 130mm
WEIGHT 0.6 KG
REGULAR CHARGE 1.5 Amps
MAX CHARGE Amps