In this week's video, I answer the question "Is my alternator safe with LiFePO4 batteries?" The answer is... it isn't—unless you take precautions.

In this video, I refer to a thermal switch I bought. It was a 10amp, normallyclosed thermal switch. I chose one rated for shutdown at 110degrees C. That temperature is something you should choose yourself, but I think that is a good number for a thermoswitch mounted inside the alternator case.

In preparing for this video I searched eBay again and found a better choice. This is the same basic thing, but this one is rated for 16a. That would be more then plenty for any alternator I've seen. Also, it's CHEAPER!

https://www.ebay.com/itm/144996884088...

A commenter brought up a concern (thanks Apollo). He thought that the thermal switch might suffer from the back emf of the coil being disconnected when things overheat. He might be right though I have seen this done in motors before. Either way a simple "flyback diode" (Google it) might give extra protection and is cheap and easy to install.

Another thing that I wish I had talked about in this video was engine room ventilation. It seems basic but keep it cooler around your alternator and your alternator will run cooler!

Well as I say the description section is how I reserve the right to get smarter.


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Here is a link to the video where I talk about engine belt upgrade    • Boat DIESEL ENGINE Hacks & Oil Change...  

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