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Old 11-18-17, 09:17 AM   #36
creeky
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Princeton university did a cost comparison between solar storage systems in 2013. Even then it was cheaper on a per cycle basis to use lithium.

Lithium battery prices have plummeted since.

One thing, don't compare horses to cars. Lead acid has serious draw backs for SESS. High self-discharge. Poor charge/discharge efficiency. The need to keep the pack fully charged. Low/short lifespan. The list goes on.

The benefits of lithium are not just lower cost. Its also a much easier and user friendly chemistry.

I have just gone 5 days without a complete recharge. Yesterday. A sunny day, I still didn't make full charge. I ran the dishwasher and a wide variety of tools. Using some 8kw of power, most of it from my solar panels. I did manage to recharge the batteries close to full.

You could never get away with that with Lead.

That's why I went on this journey. To find a better battery solution. It ain't perfect. But lithium makes lead obsolete.

When the automobile came out horses had been used for transportation for hundreds of years. Didn't make a difference.
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