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Issue solved. Some of the terminals were not completely tightened. Getting a full charge now. Also rewired the panels as 2p2s. Getting double the voltage. EPever manual had a confusing warning not to exceed 92v when wired in series. That did not apply to my 5415an controller.

I'm now looking at CALB 400ah. The vendor has provided good documentation and has gone on record stating that they are new and balanced. Still not a guarantee but I trust the manufacturer as long as they are new.

Dongguan Huanhuan Energy Technology Co., Ltd.

So I just completed a conversation with Shunbin where they agreed to replace the two cells that blew out. However he completely ignored my argument that the BMS module was inadequate going so far as to show me a photo of an ammeter hooked to a different battery (12v 200ah) with a 300a readout...

The models 100, 300, 600 have specific firmware in each. The setting for max over discharge is 100, 300, 600 based on your specific model. I made a costly mistake by not checking this attribute.

The coronavirus issue in China is worsening with the government now extending the new years vacation to Feb 12 in some provinces to keep workers home. I am in the middle of getting replacement cells from a vendor that is telling me that nothing is going out before Feb 20! This is very...

54v but the same issue holds for the summit II charger which is not voltage constrained.

I have a CALB lifepo4 bank of thirty two 400ah cells in a 2p16s configuration. The images show SOC for the entire bank as well as individual cell pairs. I am running a 20kw motor that draws up to 400a. The motor controllers are acting like they can't get sufficient current to run the motors...

I just fried my 16t. Got any left?

Hi folks, I need to replace my 16T chargery BMS that failed when one set of battery leads pulled out while it was on I only need the computer but will buy both the computer and readout.

Any insight on sources other than China?

I use that same unit on a 48v lifepo4 bank. It means that the discharge setting won't go higher than 300a. If your max discharge will not exceed 300a then your good to go.

The bad ones came from Shunbin bought through Amazon. 12v 400ah in a ss box. The constant current discharge spec was 300a. I didn't get past 286a before the BMS melted. Based on the BMS leads I'd say the BMS was likely 50a - 100a. The four batteries were wired in series. The one on the...

Issue solved. Some of the terminals were not completely tightened. Getting a full charge now.

I have taken a 2nd look at the 400ah CALB and am getting more comfortable with that choice. The vendor has provided me with good documentation and I know from this group that CALB cells are respected.

Hey Sampler, I also have a Tracer5415AN controller and need to reprogram for Lifepo4. What is your setup (software, cables, OS, etc) to pull up the screen in your image. Also, it appears that the AN series is not designed for LFP. Were you able to get it working? Any issues?

I am planning a build using 400ah CALB cells for a 20kw PMAC motor that draws 350a at peak discharge but I am having difficulty understanding the BMS part. I'm seeing that BMS' don't go that high but can be used with relays. In that scenario the BMS can handle 350 amps going through the...

I have been seeing more info come to light around Tesla's possible utilization of ultracapacitors for regeneration and would like to begin looking at doing this with my marine project. I am re-powering a 42' sloop with a 20kw pmac motor from Electric Yacht with 48v 400ah lifepo4 battery as the...

First off, thank you for this sorely needed education. BMS and discharge current capacity was an important area that I completely overlooked. As I work through what you all have generously provided and compare that to the motor controllers I'm using I see a redundancy that I'm not sure how to...

Hi folks, I've got a thorny issue that I hoping better understand with your help. I have built a hybrid energy storage system (hess) using the follow components. 4 - Shunbin 12v 400ah lifepo4 batteries. 4 - Quantum Magnetics 16v 2000 farad super capacitors I have wire the batteries and...

So here's a weird one. I was just informed by CALB USA that they stopped manufacturing the CA400 cells 3 years ago yet they still show the CA400 on their website. WTF.

Headspeed for now but open to using a hydro charger if it is justified. Using the drive motor for regen means that the controllers must direct the regen energy to the caps instead of the battery bank. Not a huge tech hurdle I don't think but definitely above my pay grade.

Right, I'm not at all sure if this translates to a marine application. Still, if it improves the regen side at all it may very well be worth pursuing. This concept looks like it is also being used in the Tesla model 3 but that is still speculation at the moment.

Two of the cells completely shorted out and dumped electrolyte. I pulled the other BMS' and saw that the mosfets were damaged in those as well. I am trying to get a warrenty return.

That guy was smart. I did not realize the necessity of doing that. Now the damage is done. It may be worth replacing just those two cells. I need to ponder that seriously since Shunbin may not honor the warranty.

Yeah, we're on the same page. I've checked the other BMS and they show varying degrees of damage. Less damage move away from the positive end. This seems to confirm that the additive amperage was overwhelming each BMS more severely than the last.

It now appears that the BMS used in the Shunbin Lifepo4 batteries are unable to handle the amperage that these batteries are capable of delivering. I now need to figure out if I can upgrade these BMS systems with ones that are more robust AND that make sense given my battery bank. Each 12v...

I have been severely humbled by a battery buying mistake and now intend to build using Sinopoly cells. My PMAC motor draws 350a at full throttle and while I don't intend to use full throttle except in conditions of (high winds/fast current) I don't want to ever exceed Max Discharge Current...

I have a 2p16s lifepo4 bank using 400ah calb prismatics. I built the bank on the bench, top balanced and tested it. All good. Tore the whole thing down and rebuilt it in place (43' sailboat) to run a 20kw motor. The build was a replica of what was done on the bench. Testing showed voltages...