UPDATE: So I apparently missed the November 2022 update where the limit of batteries in a system has been changed to 20 total, regardless of how they are interconnected. Previously, this was max 5 batteries or sets of batteries in parallel. This resolves my personal issue where I could not reach my desired battery bank capacity. But my post still stands for anyone who wishes a larger system and wants to use victron batteries but also wants to run on a 48v system. For 24 and 12v systems, you can use their "superpack" batteries which have internal bmses and can be unlimited scaled parallel but cannot be put into series.
ORIGINAL POST:
So, I might be a minority user here that is using victrons own smart lifepo4 batteries and wants to upgrade my battery bank beyond the limit of 5 sets in parallel.
For example, I use the 25v 200-a smart batteries now with 2 in series to get to the 48v system and 5 of those in parallel for an energy storage of 51kwh +/-.
I'd love to upgrade my energy storage to 100kwh +/-, currently the max theoretical using the lynx smart bms is 85kwh (4x12v@330AH and 5 sets of those). But that would mean a full replacement of existing batteries to not even achieve the capacity I ideally want, and on top of it I find it less ideal to have 4 batteries of 12v in series.
So one fix would be to offer larger batteries 25v batteries, but physical dimensions I feel like would really be a problem there as the 200ah 25v are already pretty large, or a revision with stronger BMS signals that allows more to be daisy-chained.
But... If the signal strength (based on the signals emitted from the batteries over the BMS cables) is not strong enough to pass through more batteries. Why not create 2 BMS loops/buses on the lynx smart bms? It seems like a very cheap and "relatively" easy way to allow people to run a larger battery bank.
However
The lynx smart BMS 1000A (maybe if you want higher Amperage, you also want more batteries to keep the C rating low?) does not seem to have additional BMS signal connectors. Hence, my title 'missed opportunity'.
Of course, there is no spec sheet available for this "new" product. So perhaps they have made different improvements, such as an improved receiver, that could allow for more batteries to be daisy-chained.
Additionally, a fix would be to allow more than 1 lynx smart BMS in a system.
Switching to super packs in combination with a shunt is not an option either, they are infinitely scalable in parallel, but would have me operate a 25.6v system which would require a full system replacement and additionally, much thicker DC cables.
In the end, it could just be their opinion that if you want such storage, to just use third-party products as battery bank. But it still disappoints me regardless.
Thanks for coming to my ted vent!
