November 16, 20232 yr 1 hour ago, Pho3niX90 said: For those that wanted to know, these are the accessories with the BMS Care to show closely what's in that packet? Seplos don't include that
November 16, 20232 yr Sure. Here are some closeups of the serial numbers as well. I had to drastically reduce the sizes to stick to the 3mb max upload. Here is the packet you circled The busbars that came with the bats, some vids said it is flexible, but wasn't in my case. Bot a big issue as it's free Back of the mainboard Front From the last pic, this points to be the Seplos 10E, it's covered on off grid garage as well, same as this https://vi.aliexpress.com/item/1005004996666071.html?gatewayAdapt=glo2vnm Edited November 16, 20232 yr by Pho3niX90
November 17, 20232 yr Do you think you would be able to flash this with Seplos firmware, would there be any advantage to doing this.
November 17, 20232 yr Author 1 minute ago, Greglsh said: Do you think you would be able to flash this with Seplos firmware, would there be any advantage to doing this. It probably is the seplos firmware only difference I reckon is the startup and standby display where it says 'Seplos welcomes you'
November 20, 20232 yr Author Wow that's some power packed in there. 16s2p configuration I'm guessing? What BMS are you using?
November 21, 20232 yr On 2023/11/20 at 5:45 AM, cp69 said: Wow that's some power packed in there. 16s2p configuration I'm guessing? What BMS are you using? It's the JBD 20S 500amp configured 16S. Edited November 21, 20232 yr by Raj35
December 8, 20232 yr Hi guys, I would like to know what version of s/w is on your Seplos V2 E10 BMS's you bought from Apexium? Mine is on V16.6. I bought a ready build battery 280A from them (DIY boxes were out of stock so ended up with a complete battery) and are having some challenges. Very often (not always) when load shedding start my Victron inverter will complain about a low battery alarm and "trip" but recover a few seconds later. I have changed the low DC cutoff on the inverter as low as 42V, increased the Discharge warning, protection and transient protection current parameters on the BMS to higher values to no avail. At the moment when this happen, there are no alarms or other events on the BMS, either in real time or in the data records, the cell and pack voltages does not change or even dip, but on the DC output (DC bus) reported by both the inverter and a Multimeter set to "min hold" the DC voltage drop (as low as 28V) is clearly visible. To me this seems to suggest a drop in current or an inability for current to flow on the terminal side of the battery/BMS. The BMS is usually "standby" mode when this happens - ie at 4am when the battery is neither charging nor discharging and the inverter is in passthru. Never had this with my older Lithium pack at less capacity. I suspect this is a BMS problem, either not reacting quickly enough to the mode change from standby to discharge or some other hw or sw issue that prevents current to flow. I am in touch with Apexium tech support and they are responsive. ****Update**** I possibly found the issue I have been experiencing with this battery for some time now. Note. This was a factory assembled battery and not assembled by me. It could be one of two issues or both contributing to the same. (1) The busbar connecting the two positive terminals were incorrectly installed by the factory such that all the current passed through a stainless steel nut. The correct correct installation is for the flex copper connector to attach to the flat surface of said busbar with the stainless steel nut on the back. In my case it seems this welded nut was used as a spacer. One can see the flex connector to the fuse was heating up as a result of the resistance this stainless steel nut introduced - notice the discolored label. BTW the video on the website shows the correct assembly. To fix simply turn the busbar around so the nut is on the rear. (2) my positive connector burnt and had to be replaced. This could be either be as a result of insufficient contact between the plug and the socket or heat transferred from the (1) above problem. Never the less those connectors used in this box does not inspire a lot of confidence and I replaced with screw down lug type terminals which can be properly torqued. I post this here incase someone else with a pre-assembled battery run into the same issue. I suggest checking your battery. There is a post on another forum with a similar problem so definitely not an isolated issue. Edited July 8, 20242 yr by devilljo update
December 8, 20232 yr Author Strange issue. I have a v3 seplos and I had an issue with the Bluetooth connection. Turns out the issue was with my phone but if you need I have a WhatsApp number for seplos tech support. Very helpful
December 9, 20232 yr When connecting the Apexium 280ah battery for the first time to the inverter, do you use a pre-charge resistor? If you do what resistor and values do you use?
December 9, 20232 yr 26 minutes ago, Greglsh said: When connecting the Apexium 280ah battery for the first time to the inverter, do you use a pre-charge resistor? If you do what resistor and values do you use? Yes do a pre-charge with a car 24V headlamp bulb(cheap) or a 5-20W resistor in the range of 22-68 ohm. It can also be a 100W+ 220V filament bulb. 5 seconds is normally enough.
December 12, 20232 yr Has anybody built a DIY box for these cells, I am looking for ideas if I should buy the Apexium DIY box or look at doing my own box?
December 12, 20232 yr @jeeva Did you build your own DIY battery box, if so would you mind posting some pictures, looking for ideas if I should do a DIY box
December 16, 20232 yr On 2023/12/09 at 7:04 AM, Scorp007 said: Yes do a pre-charge with a car 24V headlamp bulb(cheap) or a 5-20W resistor in the range of 22-68 ohm. It can also be a 100W+ 220V filament bulb. 5 seconds is normally enough. DIY pre-charge hack. I use a good old HB potlood Works perfectly every time.
December 16, 20232 yr 15 minutes ago, WannabeSolarSparky said: . I use a good old HB potlood How many Ohm does your "potlood" have? 😅
December 17, 20232 yr On 2023/11/15 at 11:01 AM, Pho3niX90 said: My experience with Apexium have been bad. So I have been given excuses since I paid on Friday, why I cannot collect. First, they said they need to wait for the money, before they can release, which mind you, paypal to paypal is instant. I was told today is the day, I arranged accordingly to be in the area so that I can collect as soon as I receive the reference, I was eventually told the cells I ordered were sold out by another sales person, and offered the 280 as an alternative. Since I did not want the drive to be for nothing, I agreed on the alternative. This was around 8:30 this morning. 9:40, I was told I short paid, when in actual fact they are trying to upsell me the DIY box now, when I refused, I was told a refund will be done. As the complete boxes are all they have. I am very frustrated, now let's see how long this refund will actually take. Over a month now, and still no refund. Originally I was offered a 245usd refund, to accept the 280ah over the 304s, which I obviously accepted. I had to follow up numerous times to get my refund, and was told on the 30th Nov they will only refund me 68usd. I had to eventually open a paypal dispute to get this resolved (still pending). A week ago, I was told they made calculation error, and they will now refund me 160usd. Still, not acceptable. From the arrangement, pickup, and refund, it has all been riddled with issues, and at this stage I am 100% sure that warranty on these cells will also be an issue since they cannot even do a simple refund they offered in the first place. If I were to do this all over again, I would have rather bought svolt batteries, for the same price, no hassles.
December 17, 20232 yr 2 hours ago, Pho3niX90 said: Over a month now, and still no refund. Originally I was offered a 245usd refund, to accept the 280ah over the 304s, which I obviously accepted. I had to follow up numerous times to get my refund, and was told on the 30th Nov they will only refund me 68usd. I had to eventually open a paypal dispute to get this resolved (still pending). A week ago, I was told they made calculation error, and they will now refund me 160usd. Still, not acceptable. From the arrangement, pickup, and refund, it has all been riddled with issues, and at this stage I am 100% sure that warranty on these cells will also be an issue since they cannot even do a simple refund they offered in the first place. If I were to do this all over again, I would have rather bought svolt batteries, for the same price, no hassles. Although there are many satisfied buyers these things happen and one is at the wrong end of the stick. When I bought my Hubble drop in batteries I was also going to go the DIY route. Then got a good deal on complete batteries. Still happy with them 2 years on.
December 19, 20232 yr Author On 2023/08/11 at 11:19 AM, Antonio de Sa said: @DeonBez, I've been running my 48 V LBSA battery on voltage settings for two years now, no issue so far, pretty satisfied with the way the Seplos BMS controls the voltage and once the cells reach 3.5 V starts to equalize. I still get SOC to 99% it's been like that from day 1, there is one cell out of the 16 that never get over 3.46 V but my battery health still shows 100% see attached dashboard. I charge the battery at 36 Amps and voltage set at 56 V as per OEM specification. All the information on this dashboard is retrieved from the Seplos BMS using Modbus protocol. Where can I get this Dashboard from? I have my Seplos BMS pulling into HA via Modbus. I like this dashboard tho
December 19, 20232 yr On 2023/12/17 at 5:03 PM, Pho3niX90 said: Over a month now, and still no refund. Originally I was offered a 245usd refund, to accept the 280ah over the 304s, which I obviously accepted. I had to follow up numerous times to get my refund, and was told on the 30th Nov they will only refund me 68usd. I had to eventually open a paypal dispute to get this resolved (still pending). A week ago, I was told they made calculation error, and they will now refund me 160usd. Still, not acceptable. From the arrangement, pickup, and refund, it has all been riddled with issues, and at this stage I am 100% sure that warranty on these cells will also be an issue since they cannot even do a simple refund they offered in the first place. If I were to do this all over again, I would have rather bought svolt batteries, for the same price, no hassles. That is really ridiculous and I agree with regards to the warranty claim that is something I always wonder about and end of the day I feel the warranty when buying from such a company is more of a write off. It is very hit and miss as to whether you will get anything out of the warranty if something goes wrong. Sometimes they want you to ship the faulty component back to them, sometimes they want you to try find a repair centre locally and then they will pay upto a certain amount for the repairs, other times they will ship a brand new product to you and sometimes you get nothing. Therefore I feel the amount of money one saves needs to take this into consideration and justify it. When going the DIY route with batteries, since basically all the major components are imported I feel it is best to be in the mindset that there is no warranty. If something goes wrong it is all on you and many purchase extra cells as spares for if a cell goes bad later down the line. BMS is generally easy enough to get. The Svolt batteries have been treating me well, I know of a few others who have purchased Svolt batteries and no issues there - those who have had to deal with support (more for the initial setup / comms with their inverter) have all had very good and pleasant experiences dealing with Svolt support. I am starting to think that I must try make a plan to fit more of these 106Ah Svolt batteries and give up on the idea of larger batteries (280Ah+) for now.
December 19, 20232 yr 3 hours ago, Greglsh said: @PsyCLown, do you know what BMS the Svolt's run? They use a Pace BMS.
December 21, 20232 yr On 2023/12/17 at 5:03 PM, Pho3niX90 said: Over a month now, and still no refund. Originally I was offered a 245usd refund, to accept the 280ah over the 304s, which I obviously accepted. I had to follow up numerous times to get my refund, and was told on the 30th Nov they will only refund me 68usd. I had to eventually open a paypal dispute to get this resolved (still pending). A week ago, I was told they made calculation error, and they will now refund me 160usd. Still, not acceptable. From the arrangement, pickup, and refund, it has all been riddled with issues, and at this stage I am 100% sure that warranty on these cells will also be an issue since they cannot even do a simple refund they offered in the first place. If I were to do this all over again, I would have rather bought svolt batteries, for the same price, no hassles. What is the USD difference between the 280's and 304's? Surely that is what the refund should be.
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