Quote:
Originally Posted by Hacker1
MorTech, Do you have a predicted calendar life for Star Lithium batteries? I understand that they incorporate Iron Phosphate chemistry. How is that different from SDI? I've read somewhat recently that Iron Phosphate is the best for lithium batteries... However, understand that technology may be changing rapidly in some respects. Anyway, I'd appreciate getting your perspective on this..
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The LFP battery chemistry has a more robust cell structure and will endure more charge cycles and is much less prone to thermal runaway. The calendar life of a modern LFP prismatic should be >15 years but depends on heat and the electrolyte. In a golf cart, the designed current I/O is small so calendar life will be greater due to less internal heat. I built a 120ah (usable) LFP pack for my cart a few years ago and no problems so far.
The EZGO Elite (Samsung SDI) is NMC lithium chemistry. I think LFP batteries are best for golf cart applications even though the energy density is lower, LFP are more durable. The Star, Atlas, Evolution, and Yamaha PowerTech(Roypow) use LFP.