Have you emailed Henry @ Seplos? He will give you good service.
custom made battery box for eve LF280K cells
- Thread starter sergea
- Start date
I dont follow that channel, I dont follow any channels that make their income from affiliate marketing because they are being paid to sell you specific products, so there's no integrity there, in my opinion. So far I'm happy with the performance of the BMS and the kit overall - for now!
houseofancients
Solar Wizard
i think once again , andy seems to be set out to make this bms look bad.
he is hellbound on the bluetooth app, which is a gimmic, used for a week
he used badly balanced cell last time to proof balancing cant keep up
what he fails to show , that when using proper cells, communication with the inverter, you dont need an active balancer.
used to like his channel a lot, but no so much as of late.
and yes, i do have real live experience with this bms
Given Seplos 280Ah box takes hours to assemble, I wonder how you guys do the top balance after assembly? Do you dismantle it all and do it all over? I am struggling with this and don't want to open close this box many times, I am sure someone here must have found better way to deal with this problem.
I don't want to do top balance on the bench outside of the box as cells will bloat and never be same again.
I don't want to do top balance on the bench outside of the box as cells will bloat and never be same again.
Just make a custom wiring harness/cables to connect the cells when they are installed in the case, for parallel charging?
houseofancients
Solar Wizard
do a cell by cell after doing a full charge while they are in series would be an option.
Thanks for this suggestion, I think it will work better as doing a harness is quite risky as well as the cable resistance will be another issue to deal with. I will give it a go.
I don't have that box, but that is what I did. My low voltage supply only makes about 20 Amps, so the 14 gauge wire was plenty. I charged them in parallel until the cell voltage was 3.62, then disconnected the charger and let them sit in parallel for a day.
An active balancer enables top balancing of
a 16S pack insitu =Seplos BMS + JK Active Balance/ Neey Active Balancer/ Heltec Capacitor balancer $50-$150. The first two have Bluetooth Apps.
houseofancients
Solar Wizard
active balancer is completely unneeded here.
if OP does a good top balance, and has inverter comms, this is useless.
the only reason one would need an active balancer is when garbage cells are used
on that point :
a bluetooth apps in my eyes is a gimmic only used in the first few months after building your battery, or if you're a constant tinkerer/hobbist.
nect to that, those apps are notorious for calling home with gps location and all sorts of other information which has absolutely no bearing on it functionality
so all in all useless spending of funds..
RandyP
Solar Enthusiast
- Joined
- Sep 21, 2019
- Messages
- 742
All subjective comments. I do not agree with your opinion.
houseofancients
Solar Wizard
well, it is a free country ( or world for that matter)
that being said..
been running this bms for a while now, voltage difference is 0.04 ..
and just to be very clear, have the rs485 verson hooked to my inverters
Last edited:
Each to his own. I was offering a solution for top balancing to the question " how do you top balance after assembly". Also
life is not perfect. Cell quality is not perfect and an anticipated lifespan of 10+ years will produce variable degradation. Communication with inverter + passive balancing might cope, active balancing will cope and enables the system box to remain closed and reach maximum lifespan. Aren't we are all tinkerers here? Eyeballing cell voltages is so much easier via BT to nearby gear than hardwiring. Don't you see cell voltage numbers flashing across the screen as you fall asleep?
Last edited:
It is a Seplos MASON DIY case, and it has an internal fuse, but not a breaker.
it is the seplos DIY280 case ;-) . there is internal fuse, and you can shutdown the battery. indeed, we had discuss about the possibility to include a MCCB 200-250A breaker. This breaker is really big, it would had need more space in the front panel and increase the cost. the solution would be to update the JASSEN busbar system to 600A-1000A and the breaker inside.
well, not enought people seem to be interested, to get a JASSEN update yet ;-) So until I get more than 4 batteries, I won't cover design cost for this change.
Fair enough! If you ever do embark on it, feel free to send me a PM, I'd be interested in sharing the design cost for the right solution
netforceatg
New Member
- Joined
- Jan 14, 2022
- Messages
- 12
Same here, what are we looking at cost wise for development but also product cost wise for a Seplos Jassen busbar system for 600-1000A?
Don't worry dude, bunch of us early buyers got ours like that, they were all fine as far as I know (from the posts here). I'm sure it's fine.
When did you order these? Allegedly they do a better job with packaging now.
Hope so mate. I'm not having much luck so far as you know. ?
Er.... 15th of July.
While I'm on, I've the EVE cells with the new terminals. Can anyone suggest a flexible busbar that I can use for a couple of cells that arrived bent and to bridge the gap between the two rows of cells?
Last edited:
bsimmons1202
New Member
- Joined
- Sep 12, 2020
- Messages
- 9
I ordered 2 of these kits and received them in Aug. They looked the same way. Mine was damaged. On both of the kits the "A" board had sense wires broken off. One of the "B" boards had a wire broken off. One of the BMS's had the dip switches jammed in and bent a pin on the switches. Because of the bent pin, the other pins were not making contact. I also did not receive the dongle I ordered or the extra set of wires for between the batteries. I had contacted Adam who was the first person I was dealing with and sent pictures of the damage and how the parts arrived. He was working it. I did not receive any communications from him and I reached out and his email bounced back and him not working there. I then have been working with Andy trying to resolve this. He is not returning my emails for shipping information for the parts. Does anyone have a good reliable person that they are dealing or has dealt with? Thanks. Bill
Similar threads
