Which BMS for lead acid battery replacement in I.C.E. motorcycle application?

[Indubitably]

I recently had one of the cells on my lifepo4 motorcycle battery go poof, and when I opened the thing up I noticed that the shunt resistors on the BMS seemed somewhat less than impressive. I know these things are only built to take 3 or 4 amps, but we're talking gnat's ass surface mount resisters. At any rate, long story short, I just don't really trust these prefab lead acid replacement batteries, especially considering the premium you pay for them, so I want to build my own. I'm thinking 4 10ah headway cells in series should do the trick, but I don't know which BMS to use.

What I'm looking for: A BMS so bullet proof that I can just build-it-and-forget-it. Ideally I'd like to be able to install it and never have to manually balance the cells again, but I get the impression that no bms is going to be able to do that.

What I'm willing to sacrifice: This isn't a exactly a massive battery, so I can afford to drop a little more cash on oversizing the cells, and I only have 4 cells in series, so the BMS's cost per channel can be pretty high.

What do you guys think? Am I over thinking this? Would I be better off just going back to a decent AGM lead acid battery. After all, at the end of the day, I am mostly looking for reliability and low maintenance.

 

[BlueSeas]

For a starting battery....the only real function of a battery in a typical ICE vehicle, there is nothing more cost effective than a traditional lead acid battery.

Lithium only worthwhile if the size, weight or exceptional loads enter the equation. Normally they won't.

 

[flippy]

if you run lifepo4 in a car or bike you only need balance boards. nothing more.
you can buy those for litteraly less then 2 american roebels on you favourite oriental online market.

example: https://www.aliexpress.com/item/32995358415.html

if you are feeling in geting slighty more reliable you can add a tiny solar panel somwere to keep the battery full if not using it for a while.

 

[john61ct]

Even LFP longevity benefits from being stored at low SoC. Just ensure it doesn't self-discharge down to anywhere near 3.0Vpc