Impossible to help without brand/model... Keep in mind the accuracy of the SoC counters in the BMS are not pin point accurate they are a guide. If you have multiple batts in parallel you will want a shunt based BMS & balanced bank wiring. Always start with well balanced batts before wiring in parallel. Tap on the round V button and show us the cell balance. You do not want to be charging at 14.6V as this is the absolute max. 14.2V is far safer...
Humsienk batts have over-charge protection in both BT & non BT batts, just like Wattcycle. Wattcycle is extremely responsive and already has a fix I don't believe Humsienk has addresed it yet as these are loss-leader batts.
Oddly, when I wrote to HumsiENK about an updated app, I got a response from WattCycle…
The 14.6 v charge was only to try and get both batteries ( charged independently) to 100% SOC before wiring them in parallel. This instruction came from Humsienk. They also said limit the amps to 5. Charge for a couple of hours.
They are the same company and use the same contracted manufacturer. As I mentioned above Humsienk is their loss leader line. Built similarly, but Humsienk gets lower cost components and most of the tech support team is focused on their WC premium line..
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If your cells were balanced at the top, you can see the loss of capacity with the 110mv imbalance. That is a lot and it will be considerably more as you get down to the 2.5v LVP voltage.
Don't know why you just called out Battleborn in this post - that was not a Battleborn battery they were comparing to..
The initial post was asking about battery brands. Battleborn was recommended by a few. Then I saw a FB post where a guy with 14 100Ah Battleborn batteries has lost the majority of his capacity. Did you watch the FB video link? Those are Battleborn 100Ah batteries and they are constructed exactly like the battery in the Lithionics video… maybe its a clone, but that’s why I linked the video. In any case if you have these batteries, or are considering them it is good information to have.
A bit out of context??? Not sure that bashing a brand with that one photo and no background info is appropriate or useful to the present discussion.
I am not bashing BB, just posting information on a potential point of failure in one type of their many batteries. The original post was asking about battery brands so I think that information is appropriate.
Looks like a solid install, except for the Mega fuse AIC. But this could have been installed before TE-13. The setup is 14 BB10012s each wired to a Lynx distributor. There at two 5kVA Quattros capable of 8kW continuous. So under 50A per battery plus DC loads, but the BMS should protect from overcurrent. They are rated at 100A continuous.
The video from the FitRV was at the Lithionics factory. If you watch Will Prowse BB10012 tear down you can see the design is the same as the battery in the video. I just found it interesting that the engineer points out the plastic as a weak point and then we see the issue in the field. If I was considering or had the BB10012 I would like to know this. I don’t think I would run close to 100A maybe 30-50A and verify the loads are balanced for batteries in parallel.
Nothing wrong with Mega fuses. If each 100Ah battery has it's own Mega fuse (2000 AIC @ 32V, lots more at 12V), then it meets ABYC requirements (1500 AIC), as per Table 3B (ABYC E-13).
The photo provided above clearly shows heavy corrosion on the wire lugs. That will cause resistance and heat. There is no fault to the battery here. This lack of maintenance or installation error would cause heat and resistance on any installation, regardless of the brand of battery. What is the white powder? Looks like dried saltwater residue... Simple user error.
Table 3B in E-11 does not apply to LFP. Look at the table title in the 2025 version and note 2 in the previous version.
Well then I think one would expect scorching on the wire lugs and battery post outside the battery and not on the nut and battery post inside the battery.
