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Batrium System for CALEB LiFePO4 Cells
#1
Hi guys

Wasn't sure where to post this, mods feel free to move if needed .

So I bought a batrium system for my CALB cells LiFePO4 cells. I've had it for a couple of weeks but just finding the time to sst it up today.

I thought I'd share the process here and will most likely have questions  Smile

The bockmons and daisy chain cables are all mounted and green leds on all mons.

I'm busy reading the batrium website and watching Pete and Daniel's vids to work out the next steps. I dont have the shunt yet as they were out of stock.


 Photos below

  

                                                Choose LiFe  Wink

                      May all your batteries be fully charged and perfectly balanced  Cool
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#2
@Wattsup 

Is this pack temporarily 12v and then will be reconfigured to 48v ?

Looking good, a few pointers about your install:
  1. For parallel multiple string make sure the feeding POS/NEG cables linked to the inverter/charger need to be at either end.
  2. Cable management ideal methods
  • a. Red cable from Blockmon should be position above the busbar link to reduce the chance of catching from tools slipping the wrong way.
  • b. keep the red wire looped with the cable slots near the positive
  • c. keep the comms cable (blue/yellow) on the far side of each mon between them so that if the cable is yanked this locks against the pcb and not pull out of the socket.
  • d. tuck the comms cable (blue/yellow) under the battery busbar to minimise it for be caught
  • e. some of the power lugs are above the Blockmon pcb, the power path should always be direct between the battery and busbar/lug, the blockmon is then above to avoid large currents from being transferred through the pcb.

Some of the above is outline in the document found on the BlockMon page
Connecting BlockMons (Battery Chain)


Arrows related to (e)


Arrows related to © & (d)


Example cable management of blockmons to avoid them being caught by tools or other objects.
Wattsup likes this post
www.batrium.com provider of battery management for lithium cells
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#3
(06-18-2017, 07:13 AM)Batrium Wrote: @Wattsup 

Is this pack temporarily 12v and then will be reconfigured to 48v ?

Looking good, a few pointers about your install:
  1. For parallel multiple string make sure the feeding POS/NEG cables linked to the inverter/charger need to be at either end.
  2. Cable management ideal methods
  • a. Red cable from Blockmon should be position above the busbar link to reduce the chance of catching from tools slipping the wrong way.
  • b. keep the red wire looped with the cable slots near the positive
  • c. keep the comms cable (blue/yellow) on the far side of each mon between them so that if the cable is yanked this locks against the pcb and not pull out of the socket.
  • d. tuck the comms cable (blue/yellow) under the battery busbar to minimise it for be caught
  • e. some of the power lugs are above the Blockmon pcb, the power path should always be direct between the battery and busbar/lug, the blockmon is then above to avoid large currents from being transferred through the pcb.

Some of the above is outline in the document found on the BlockMon page
Connecting BlockMons (Battery Chain)


Arrows related to (e)


Arrows related to © & (d)


Example cable management of blockmons to avoid them being caught by tools or other objects.

Thanks for the detailed response!

Yes I'm going to run the 100 ah cells at 12 volt for now until I get to know the system, then I will parallel the 60 ah cells and run at 48 volt. Is there anything else I need to be aware of in this case.


Can I ask the reason for your #1. response. Just want to understand reason for this.

I will tweak the connection/ cable management to your recommendations.

Ive just ordered some extra  blocmon cables from your store so will put the rest of the install on hold until I  have those.

Your site was helpful but Daniel's install video got quite a few more views today  Wink
                                                Choose LiFe  Wink

                      May all your batteries be fully charged and perfectly balanced  Cool
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#4
Regarding #1. The thing is that the cables to induce resistance. And as we all know this will lead to voltage drop. If you have both neg and pos in same end of the packs you will have a resistance to the other end. So for instance under load you will have a voltage difference over those packs compare to the packs in the connected end.

In the end this will lead to that the batteries closest will be abused more then the ones on the other end.

The more packs hooked up in parallel the more complicated this will get Smile And as always make sure to keep the resistance to minimum for all wires that you use to paralell the packs to reduce the issues.
NOTE! My links supplied in this message may be affiliated with Ebay and by clicking on them you agree on the terms.
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

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#5
I thought that was the reason. Thanks
                                                Choose LiFe  Wink

                      May all your batteries be fully charged and perfectly balanced  Cool
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#6
(06-18-2017, 09:56 PM)Wattsup Wrote: I thought that was the reason. Thanks

Yes, daromer explained it if each link is 1 milliOhm (typically it is more). Your current configuration has the far cells (left) with 6 additional links hence 6 milliohms more impedance than the closest (right).
www.batrium.com provider of battery management for lithium cells
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