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Batteries in a series? Answered

So if you were building an electric car and needed to up your voltage by wiring multiple Pb batteries in a series would you only get the watt-hours of one battery like you do with capacitor capacitance, or would you get all of them combined, or at least a little power capacity boost.  Also, would using lithium-ion batteries like these in a series be ok. lithium

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Re-design

7 years ago

Using series connected batteries you don't get any capacity boost. Your pack is still rated at the single battery rating. Read the first sentence under SERIES.

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jj.incRe-design

Answer 7 years ago

Oh, darn. So how on earth do I get 96v and still maintain a reasonable price and run-time. This is the setup I am looking at, how long will 8: 12v, 589 Watt-hour, 106 reserve capacity batteries last at max motor power.  I figured these batteries would only be around 40 amp-hours per series, and I would need about 600 amp-hours to run for an hour.

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steveastrouk

7 years ago

You get the combined Ah, and, since the voltage is increased, you get increased Wh.

Lithium ? Yes, sure, if you use a proper charger.

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jj.incsteveastrouk

Answer 7 years ago

So the 8, 40 ah batteries I would need to get the voltage up would also give me 320 ah total. That's great!!!! I guess I won't be needing 300 or so batteries I expected. Is weight the only benefit of lithium?

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steveastroukjj.inc

Answer 7 years ago

No, they have zero memory effects, within their charging life, they also hold charge very well - self-discharge is a problem in other chemistries, like Pb.

Their output voltage is also pretty stable during the discharge cycle too.

Steve