Quote:
Originally Posted by ME_Andy
The LiFePO4 starter battery experiment is over. There was dead silence when I tried to start it this morning and lots of dash warnings. Voltage was down to 3.5V. :/ So I'm back to lead acid.
Some reasons why the LiFePO4 might have died early are it was a little undersized and there were a couple mornings when I ran it near freezing temp. LiFePO4 doesn't like that.
The LiFePO4 was 20-30 Ah, OEM was 50-ish. Perhaps I was a little too cheap, I'm not sure. Then again, if it was the cold that killed it, I'm glad I didn't spend more.
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Best mod I've ever done was Odyssey Extreme sealed AGM batteries. After killing walmart batteries every year I've yet to kill an odyssey (going about 8 years now on my first). In my head I think it saves you the most money over time. Toyota oem/oem replacement batteries are very good too but usually more expensive. The battery in the 2010 Prius is the original and it still reads 12.5V resting. 12 years is not bad.