Good motorcycle VOLTAGE REGULATOR for LiFePO4 battery

Anyone help with a 12v LiFePO4 motorcycle VOLTAGE REGULATOR circuit to build?

I'm changing out the lead/acid battery in my Bourget ‘Low Blow’ motorcycle (if you know what that is) and thought of building own DIY voltage regular. For reference, a Bourget is basically a Harley (but a hell of a lot cooler) and is equipped with a 113” S&S V-Twin engine.


I've been through too many lead/acid batteries here in Phoenix. Last summer (2023) 300 year old, 50 foot cactus died of heat stroke, don't tell me there’s no Climate Change!! But I digress...

I'm hoping the lithium battery will not only last longer than the lead acid but be able to crank and start the engine more easily. If course there's the Phoenix heat to worry about.

I haven’t built many electronic circuits in quite a while but thought this would be a great re-entry point.

I’ve found simple circuits online but considering the Phoenix heat, and the vibration that the bike will naturally generate I wanted to doublecheck if there is a better option.


Banshee YTX20L-BS YTX20HL-BS Lithium LiFePO4 Motorcycle Battery,12V 18Ah,550CCA

SPECIFICATIONS: Brand: BANSHEE - Lithium Starter Battery Model: 20HL-BS LiFePO4 Voltage: 12V / What-Hour: 72wh / CCA: 550CCA

CHARGING: 14.4V (max 15V) / 3A (max: 12A) Do not use automatic desulfation mode. Recharge battery <6 months. or when voltage is <12.8v


by techeq
May 31, 2024

1/ Is the lithium battery any better than lead/acid for high temperature tolerance? 2/ Is there a spec sheet Vmin/Vmax figure?

I ask this because I've been reading lately of fires started by ebike and ev batteries.

by Foxx
June 04, 2024

Sorry-- that should be Tmin/Tmax

by Foxx
June 04, 2024

Ill see if I can find it

by techeq
6 days, 4 hours ago
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