I've been contenplating installing two seperate 12V LiFePo4 banks rather than just one. What would be the best way to do this with REC BMSes? I know there are the 2Qs, but they seem to be for higher than 12V. Can you use two REC Actives with the Master Unit?
(I'm sure I'll have a bunch of follow-ups ;) )
Dual REC Actives
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You don't mention if you need to integrate your BMS with a Victron Cerbo or Wakespeed WS500. The Active BMS is typically for standalone applications and Victron only allows one primary DC source for DVCC control.
For multiple pack systems that require Victron CANBus VE.CAN integration the REC 2Q "High current" Master/Slave is the preferred solution for voltages from 12-48V
https://ogm-energy.com/products/rec-bms-high-current-48v-master-slave-kit
But if you are a techy guy there may be a workaround.
On github someone has built a "Battery Agregator" as a Victron Cerbo app that may work, but we havent had time to test it ourselves. Here's the link: https://github.com/pulquero/BatteryAggregator
If you try it please let us know how it works for you.
Thanks!
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@Rick
Thanks for the pointer to the git repository. I am a tech guy, but hesitant until it's fully tested to put stuff like this on our boat, unless it's a system that I can live without.
It will need to integrate with a Victron Cerbo and 2x Arco Zeus regulators, so it sound like if I decide to go with two "batteries" I'll need the REC 2Q. (which I think would be ~3x the cost).
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As a bit of a follow-up is it possible to run 2 abms through a single wifi gateway?
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@Neil Good question, and I believe the answer is yes, we just need to have the address of the second BMS changed to another number. Default is (2).
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