12-18-2022, 07:20 PM | #11 |
Not Yet Wild
Join Date: Oct 2022
Posts: 9
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Re: Lithium Batteries Help (Allied)
Thanks!! Can you repost that item or link, as it doesn't seem to bring up anything?
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12-18-2022, 07:31 PM | #12 |
Gone Wild
Join Date: Apr 2008
Location: Western NY
Posts: 2,298
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Re: Lithium Batteries Help (Allied)
https://m.aliexpress.us/item/3256801...andl_shipto=US yes I've bought many things there you can pay with PayPal as well which gives you added protection.
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12-19-2022, 04:32 PM | #13 | |
Not Yet Wild
Join Date: Oct 2022
Posts: 9
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Re: Lithium Batteries Help (Allied)
Quote:
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12-19-2022, 05:25 PM | #14 |
Gone Wild
Join Date: Jun 2017
Location: Savannah, GA
Posts: 6,539
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Re: Lithium Batteries Help (Allied)
There are options for LifePo4 in the “color” selection under the listing.
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12-20-2022, 08:29 AM | #15 | |
Gone Wild
Join Date: Oct 2012
Location: Southwestern Pa.
Posts: 6,215
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Re: Lithium Batteries Help (Allied)
Quote:
While (from everything I've read) this is true with LifePO4 chemistry, batteries with Lithium-Ion (Nissan Leaf) chemistry do not react the same. When I built my Leaf pack I kept my FLA dash volt meter. The Dash VM is usually .1-V less than what my BMS monitor says. That and under a hard acceleration, the voltage of Lith-Ion will drop 2-3V vs what the actual pack voltage is "at rest." |
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12-20-2022, 03:03 PM | #16 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,192
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Re: Lithium Batteries Help (Allied)
I built a meter that estimates SOC on my Leaf pack that is probably good to a couple %.
I got the discharge curve online and made a table lookup routine to linearize the SOC vs Voltage curve. There is enough of a curve to do this with Leaf chemistry but for LiFePO4, you really can't do this. The discharge curve is way too flat for most of the discharge. |
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meter, miami, volts |
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