Lithium Batteries and VW powered motorskiggles

[Geeto67]

Hey all..

so I need a battery for my VW powered BMW motorcycle. As you can imagine space is at a premium.

I met up with another VWM owner (his is homebuilt with some Webly Vickers parts) over the weekend and he was using this battery to start and run his bike:

https://www.amazon.com/YTX14-BS-Lithium-Sealed-Bat...s9dHJ1ZQ==


Says he's had it about a year and it's worked fine. I was about to pull the trigger but I saw that the battery is only rated for 20A. By all documentation I have seen the stock 1968 12V generator puts out about 30A max. All other specs check out, esp voltage and I plan on upgrading the regulator/rectifier unit from a shunt type to either a mossfet type or a series type.

So is this a good idea? or am I working toward an eventual smoke show?