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Forum: Lithium Power Systems

03-06-2023, 10:30

Replies: 26

AGM>LiFePo4 Upgrade design help

Views: 2,739

Posted By Statistical

Re: AGM>LiFePo4 Upgrade design help

You can but by ABYC it needs to be within 7" of the batteries. However I question if you need that at all. Just fuse each battery and then make sure the cable downsteam of where they are paralleled...

Forum: Lithium Power Systems

03-06-2023, 08:11

Replies: 26

AGM>LiFePo4 Upgrade design help

Views: 2,739

Posted By Statistical

Re: AGM>LiFePo4 Upgrade design help

It is the second 300A fuse which is redundant just simply size wiring to handle the full 400A at that point. Fusing at each battery is ideal if possible especially with LFP.

You quickly can run...

Forum: Lithium Power Systems

03-06-2023, 07:44

Replies: 26

AGM>LiFePo4 Upgrade design help

Views: 2,739

Posted By Statistical

Re: AGM>LiFePo4 Upgrade design help

By close I mean on your diagram. Right now your battery isolation switches don't isolate the batteries making them kinda useless. The switch should be positioned so that when it is off there is...

Forum: Lithium Power Systems

02-06-2023, 18:35

Replies: 26

AGM>LiFePo4 Upgrade design help

Views: 2,739

Posted By Statistical

Re: AGM>LiFePo4 Upgrade design help

Mostly good.

If you use a single fuse 400A then each battery (and the cable connecting it) should be capable of 400A. BMS should not be relied upon as a safety measure. Mosfets can fail closed. ...

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