4 x 100Ah Parallel Battery Bank layout and fusing. Comments please.

[DEEP NNN]

My diagram and plans for creating a LiFePo4 12V 4 x 100Ah battery bank.

I am choosing a flexible buss bar setup. I thought about a solid copper buss bar but I am concerned about all the terminal connections not being perfectly level and thus creating poor/stressed contacts.

This battery bank will feed a 1000W Renogy inverter. I am not sure what fuse size I should use in the positive to the inverter.

The 100A terminal fuses I picked are based on something I read or heard where you want to avoid dumping huge amperage into a faulty battery in the chain. There is a complication I see with these batteries since they can only accept 50A input.

I have chosen the diagonal charge/discharge layout.

Click on the thumbnail to expand.

 

[sunshine_eggo]

Looks good. Folks often just use thick cable for battery interconnects rather than solid or flexible bus bars.

I assume your shunt isn't depicted, but it's planned.

Most don't opt for the terminal fuses, but no harm. Are they Class T? If not, they may be worthless. Fuses/Breakers for LFP must have an AIC rating of 20,000A or more.

The main fuse should be 1.25X the wire rating and Class T.

The application may draw, 1000W/12V/.85 = 98A. Size your wires and fuse/breaker accordingly.

 

[DEEP NNN]

Looks good. Folks often just use thick cable for battery interconnects rather than solid or flexible bus bars.

I assume your shunt isn't depicted, but it's planned.

Most don't opt for the terminal fuses, but no harm. Are they Class T? If not, they may be worthless. Fuses/Breakers for LFP must have an AIC rating of 20,000A or more.

The main fuse should be 1.25X the wire rating and Class T.

The application may draw, 1000W/12V/.85 = 98A. Size your wires and fuse/breaker accordingly.

Yes about the shunt.

 

[DEEP NNN]

Looks good. Folks often just use thick cable for battery interconnects rather than solid or flexible bus bars.

I assume your shunt isn't depicted, but it's planned.

Most don't opt for the terminal fuses, but no harm. Are they Class T? If not, they may be worthless. Fuses/Breakers for LFP must have an AIC rating of 20,000A or more.

The main fuse should be 1.25X the wire rating and Class T.

The application may draw, 1000W/12V/.85 = 98A. Size your wires and fuse/breaker accordingly.

I'll check on the Class T.