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Thanks. The switch is isolated. Lead and LFP never parallel. Going from 1 to 2 probably goes faster than using a resistor and then turning the switch.

I have a Victron Multiplus 3000W with 2xSOK 280Ah installed in a boat. That means I switch off the main battery switch when I do not use the boat. So Multiplus is disconnected. Is there any pre charge circuits built in to the batteries? How long does the capacitors stay charged? As my...

Agree. I used 2/0 between a 280Ah/12V and a 3000 W inverter in my RV. Works flawless. But in a boat I need to comply with ABYC so better to follow the recommendation's…….

Hi guys, I’m installing 2 x 280Ah batteries in parallel on my boat. Have been running 4/0 marine wires (105C) between battery fuse (400 Ah) and Victron Multiplus 12v/120A/3000W. Typical high draw will be 1800 W when induction top is used. (But would like to size system for the 3000W...

I watched Will on one of his Youtube videos. His recommendation was to use the resistor on the negative side? I have always done on the positive side. Does it matter?

If you do not let the voltage go up more than (3.4V) cells will most probably be balanced. If you go higher you end up in the knee and your Delta V starts increasing very fast.

How did you balance the

The BMS is a passive on/off switch. The spikes are coming from your alternator. I would check terminal connections. Bad connections will not be obvious when charging with a low current. Charging with a High output alternator can cause balance problems if you have bad connections. I would...

What regulator do you have for your alternator? What voltage is it putting out normally?

They are in service since a year. Have no problems. My question is more academic in order to understand what you can expect if buing matched Grade A cells. I think the seller was Varicore.

I have EVE 280 Ah cells that I bought on AliExpress. Did top balance the cells @ 3.65V. I charge them to 3.475 (13.9V) with 2 hours of absorbtion. Delta V goes to 55 mV. The Daly BMS is the only balancing that take place. My question: What is considered an acceptable Delta V for matched...

One of the problems with the early BMS:s was parasitic current draw. I know a number of people that came back to their boats after 12 month in storage and did find the battery bank empty (destroyed) because of parasitic current draw from the BMS. i do not know what the current draw is from the...

I think this setting ”Defittercurr” controls the sleep mode of the BMS? Disconnected everything from the BMS. The Amps that the BMS register cycles between -0.1 to 0.3A. Not sure what it is measuring as there is nothing connected. BMS has not gone in to sleep mode since I changed the setting...

Thanks Sharky? Your information was 100% correct. Digged out an old Windows laptop from the closet and downloaded Sinowealth software. Dfittercurr was set to 2000mA on my 200A BMS. Changed it to 100mA and BMS started to read small loads. I bet this also means that the BMS also will start...

Instead of changing the BMS it would be easier and cheaper to install a RC Cellmeter 7? Just drill a small hole for the sensor cables.

I would buy an SOK if it had a way to connect to the BMS. I can understand that SOK do not want consumers to change settings. But see what is going on is another thing.

Hi guys. I have been servicing a lot of lead/acid batteries in yachts over the years. Most of the time the customer changes his batteries before there is a catastrophic event. But occasionally I have seen lead/acid batteries that have had shorted cells that have caused extreme heat and in some...

Well I have not tried to connect with the sinowealth software yet. Did not think it was so important to get the readings right in the BMS. But I’m starting to think it also affects the balancing. In the end of the charge cycle when charger goes in to absorption the balancing stop when amperage...

Yeh thanks. It was an easy fix. I unplugged the Bluetooth dongle. Started again when I plugged it in.

Hi Guys, My Daly Smart BMS disconnected today when I did run the coffeemaker. (Second time I used a higher load) I tried to restart the BMS with the wake up button I installed. No success. Started a charge cykel with the battery charger. BMS came to life and let current thru. Only problem...

Thanks Sharky, Will look at that when I visit the trailer next time. Can you access Difittercurr over Bluetooh, or do you need to connect with PC? My 200A Daly is not reading under 2A.

Yes I did find the zero current calibration. I’m not sure If I did it correct? This is what I did. But I made sure there was no load and then pushed the button ?

My Daly Smart BMS 4S (200A) is not registering small loads? I have a parasitic draw around 1.1A/h in my travel trailer. The Daly BMS show 0. My Victron shunt shows 1.1 A. As the Daly BMS does not show small loads it also stop calculate SOC. So big difference in calculated SOC between Victron...

Hi, Today I was wathing Will Prowse video on the SOK Battery. I’m amazed that there is not a similar battery box available for the EVE/Lishen 280Ah cells. How cool would that be. a Metal box like that with room for the BMS would be a Big sales succes. i would buy one immediately. Another...

I topbalanced my cells in paralell. Then put them together in series. One cell is running away when I get to the knees. Before I reach the knees there are very small difference. It is always the same cell In both ends of the voltage curve. Did set the charger to 14.2V and got a diff of 0.1V...

I’m sure pressure will change with SOC and temp. No doubt. Read the threads about springs and load cells. There is a bunch of smart people that is trying to solve that problem on this forum. I spent one evening reading those compression threads. Trying to achieve ”perfect” is in my world...

Thanks Topper! That confirms what I felt made sense. A snug fit with the wrist.

Well that is a good question. Accordingly to invoice it is course.

Thanks. What is the answer. My rods are M6 stainless steel?

Thanks for answering. I was reading lot of threads yesterday about compression..... Did not give me much answers. How much torque should I apply on 4 bolts compressing (4 EVE 280Ah) to achieve 12PSI?

Have been in contact with their support two times lately asking about products I have been considering buying. Both times I have got answers from people who does not know their products or want to learn. After that experience I have decided not to become a Renogy customer.

Hi Guys, Today I glued my studs. It is just preventative. (Not more than normal wiggle before gluing) with the studs) First cleaning with aceton. Then primer 494147 + Loctite 271. I did grind the end of the studs just to get more thread in to the battery. Backed out the stud 1/4 turn before...

That is one way of doing it. I was thinking installing the DC/DC charger in the trailer with Andersen connectors on both input and output. Makes it easy to move it to the truck If I want to charge my portable battery. And when charging the trailer battery while towing I just leave it in the...

Thanks Grizzman. That all make sense to me.

What I do not know is if the Victron Orion step up the voltage on the output port? I guess I will find out. Renogy support answered that it was not possible.