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Are these lithium ion batteries or lead ones?

• wlesieutre 7y ago
  Definitely lithium ion. Lead acid batteries are about the poorest option in terms of energy capacity per weight, which is important when you have to spend energy for hauling its own weight around. They may be useful for permanent utility grid installations, but you won’t see lead acid batteries powering electric cars.
  • adrianN 7y ago
    I think lead-acid is not useful for grid installations because of the low lifetime. They're good for maybe 300 cycles. Their only redeeming quality seems to be their low cost.
    • wlesieutre 7y ago
      Ah you’re right. Looks like they’re used for small scale off grid solar installations, not so much at utility scale. It’s been done (link below) but even the one I found is moved over to lithium ion now. https://energy.ehawaii.gov/epd/public/energy-project-details.html?rid=3--1750332b5038042 https://energy.ehawaii.gov/epd/public/energy-project-details...
  • joosters 7y ago
    Toyota uses lead batteries in the Prius, they’ve been fine there for over a decade. Obviously much heavier than Li, but that’s a price/weight trade-off. With suitable charge management, lead acid batteries can last a very long time.