Moving from FLA to Lithium Ion

[canpandave]

We have a house at the beach, need 40kwh of storage, currently using Rolls FLA batteries.

We use all Schneider equipment including a Conext 6848 inverter.

Can any one advise if a BMS is still needed or if the 6848 will handle that.

Thanks

/d

 

[Supervstech]

We have a house at the beach, need 40kwh of storage, currently using Rolls FLA batteries.

We use all Schneider equipment including a Conext 6848 inverter.

Can any one advise if a BMS is still needed or if the 6848 will handle that.

Thanks

/d

It depends on if you are using drop in batteries, or assembling cells for the bank...

 

[ghostwriter66]

Answer is Conext 6848 can handle what you are doing but the question you are asking about Conext 6848 and BMS is totally separate ...

As you well know the Conext 6848 is designed to take battery to household current ... and the BMS is designed to strictly protect the batteries ...

My answer is YES - you will need a specific LiFePO4 BMS to regualte the batteries properly .... UNLESS you are positive that you can program your charger to properly charge the LFP and that your Conext 6848 will shut off BEFORE the batteries drop below 5% ...

 

[ghostwriter66]

It depends on if you are using drop in batteries, or assembling cells for the bank...

I keep forgetting that some ppl are millionaires and still purchase drop in batteries ... LOL ...

 

[canpandave]

Great, thanks that answers that... now to find 40kwh of batteries.......

 

[canpandave]

It depends on if you are using drop in batteries, or assembling cells for the bank...

I think we are going to build the new battery... still deciding on CALB or Al wrapped

 

[mvas]

for CALB, Prices range from $170/kWhr to $300/kWhr
$6,800 = 40kWhr x $170/kWhr
$12,000 = 40kWhr x $300/kWhr <== WOW !!!

 

[canpandave]

I think we will buy in China and ship.....

 

[CaptainDenmark]

Have you considered Thad 40kWh of FLA is not the same as 40kWh of lifepo4?