Search results

Register on the victron site and enter the remote code in to the Venus OS then you have cloud access.

You cant use the Pylon protocol from Seplos to the Solis, Use either AoBo on the inverter of the default setting. The BMS will handle the rest.

Hi, we install these daily and they do get noisy on full chat. the solution is rubber tiles installed between the rear mount bracket and the wall. We use hook stops which technically are designed for roof solar rail mount hooks, but as they are already fire resistant, fairly thick and dense...

Although as others have said its probably not worth while, however if you do go for it, if the Turbine comes with an "A/C inverter as you have stated" why do you need a replacement inverter with an additional DC MPPT input?

TN-C-S is a combined N to PE at the point of supply plus PME along the supply line. As @SeaGal has stated you will require a separate Earth Electrode installed. the Sunsynk does have relay output to do this for you. Depending on what model/size Sunsynk you have, they have a full bypass mode so...

I do have the firmware specific for the SPH series and Seplos BMS if you want it, i will add that you do so at your own risk flashing the firmware, I have used it a few times on systems for friends with DIY batteries and they are working perfectly for some time now.

Does it currently communicate with the inverter via the PCS port ok? if so it has already been flashed.

Have you flashed the firmware of your Seplos unit to be compatible with the SPH series so that can comms works ok?

Point F would be the most logical place, as its the combined end point for both negative leads from both battery packs.

Surely the same amount of energy has to be transferred doing 4x cells individually or 4x in parallel?

Its working fine now, and has been on point ever since, within 0.5% of my Victron shunt in terms of SOC and current in/out

As UK registered MCS installer, Electrician and Napit certified person, a few things to point out in your diagram above, You can't have a 63A MCB from the DNO cutout to your inverter with zero protection in place. You normally have the supply concentric cable from the DNO to the cut out, usually...

Thanks for that, I have just seen the new version release on March 5th, and updated mine and done exactly as you have, full charge to 3.65v per cell and reset both SOC to 100%, we shall see what happens from here on in. don't see how this Cr*P passes QC

They did issue a "fixed" FW but all this changed was the resolution of the shunt down to 1Amp from 5Amp still same SOC issues.

I will start another fresh thread on this, but for the sake of this post there are some serious issues with the Seplos BMS vs 3.0 and SOC, I have the 200amp version 3.0 with active balancer. I noticed on a fully charged pack that in the morning after a discharge my SOC was showing relatively...

Any of the s5 series or bellow don't work too well in parallel mode, it can be done using home assistant but its janky. The S66 model support parallel out of the box.

It does use that code, try it on yours, open the BMS software and change the SOC Ah to a lower value youll see it reflect the SOC in the main dashboard.

Still has Cloud based functions and requires internet to check site ID license against the hardware it's running on.

It absolutely is a setting you can change and its supposed to read Ah, if you freshly top balance a pack to 3.65v per cell, you assemble the pack, plug in the BMS, set the capacity to 280Ah if that's your pack size and set the soc to 280ah, that sets your calibrated pack to 100% soc which is...

Under my resources section youll see the downloads. You cant reliably have the crappy solis cloud/ data logger and local Modbus working at the same time

To chime in, I made a really small but smart "UPS" with a boost converter / charger from a single 3.2V LFP, runs my raspberry pi just lovely

I know, I have built probably 80+ packs now and not seen any quite this bad even from B grade cells. I've had them two weeks now, a week to top balance them and then assemble them and test. Unfortunately they are not open at the moment due to Christmas.

Here you can see (highlighted) when a 40Amp DC load is applied at around 45% SOC 3.1v per cell, the cell voltage drops off a cliff down to 2.9v in under a minute. Test performed today, 15 Degrees C temp from a fully charged pack that was ticking over around 10Amp discharge all day. You can see...

My input on these cells, I purchased some from a UK company called Fogstar, Envision 305Ah grade b. After receiving the cells, checking each visually, running an Internal resistance check on each cell to compare against the name plate rating and finally a top balance of all cells to 3.65v per...

As a Solis installer in the UK, there are a few considerations when having the backup/eps port wired in. Many just wire a double socket up to this port and run 13amp plug top appliances from this, bare in mind, when the backup is enabled you lose the protective earthing arrangement from your...

I did the DNO for him as I have access directly to many UK DNO's for quick applications.

UK installer here and Electrician. under no circumstances do this. solar PV in the UK needs to bed fed from its own consumer unit with is own RCD type rated for DC imposition. No solar PV system should share the main house CU. Have a read of the IET guidelines for this.

Not currently, I dont have access to the read register document yet. If nayone has this for the new V3 Seplos BMS that would be handy

The pylontech have a stated usable capacity which is less than the actual cell raw capacity, this is there for longevity. I really wouldn't worry about them being at 100% for what in reality is a few hours at most.

Thanks for the replies, i will pass this info on and report back what happens.

Question on behalf of a friend, one that I don't have the answer to, one grid tied Solis 6kW hybrid inverter, connected to 32kWh of DIY LFP 48v with a seplos 200amp BMS with can coms all working, if they were to introduce a secondary charger (non PV) that outputs a constant 750Watts from a water...

I can guarantee, without the batteries in parallel being wired in the correct method and the positive and negative being fed from each end of the battery stack, over time one will discharge more throwing this error. The SOC in this config as per the manual states that is an aggregate of each...

The manual even shows the correct way to cable them for single parallel config

Assuming all battery packs feed the single inverter? The cabling doesn't look correct, it appears you have them all wired in to single pair of bus bars then on the inverter. my hunch is in this config, you have one pack that is low and triggering the alarm. Photo bellow, albeit a different...

The Solis RHI 3PH can be used in a 100% unbalanced 3PH situation, we have used those quite a few times in the UK.