Building a Battery using LifePO4 38120 Headways cells

Hey all,

I'm in need of some help building battery using lifepo4 38120 headway cells. They are 3.2v at 8mps per cell. I have (12) Cells. What I need help in is how to connect them so I can get 12v and whatever amperage this becomes.

Can anyone help me with the configuration of the battery?

Thanks

James

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Robert Peter Oakes 1 month ago +2

you wont get 12V exactly, your choice would be 9.6V (3 series batteries) by 32 Amps (4 parallel batteries) in series with 2 more packs resulting in a 3S4P set. or 12.8V (4 series batteries) built with…

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0 michaelkellett 1 month ago

You will need to check the spec of the batteries but one issue with lithium batteries is the greater range of operating voltage than lead acid.

4 batteries will give you 14.4V when fully charged and just under 12V when discharged.

The faster you discharge them the less energy you will get out - this is true for all batteries.

What load will you be driving ?

Robert Peter Oakes is right to suggest that you will need a proper balanced charger.

MK
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0 Robert Peter Oakes 1 month ago in reply to michaelkellett

These are not LiPo, there lifepo4 and are lower voltage even when charging so more important to get the matching charger/balancer
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0 Robert Peter Oakes 1 month ago in reply to michaelkellett

These are not LiPo, there lifepo4 and are lower voltage even when charging so more important to get the matching charger/balancer
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0 michaelkellett 1 month ago in reply to Robert Peter Oakes

eclipsebikes.com/.../headway-lifepo4-38120hp-32v-8ah-p-194.html

3.6V fully charged, 4 * 3.6 = 14.4

Lithium Ion or polymer closer to 4V so 16V for 4 fully charged.

MK
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Building a Battery using LifePO4 38120 Headways cells

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eclipsebikes.com/.../headway-lifepo4-38120hp-32v-8ah-p-194.html