KudozInteriors: Good morning great minds Please I'm having a serious issue.
I got premium advise here for my load to buy at least 3.5Kwh battery but then my installer advised me to just close eye and buy 5Kwh which I did. I was too busy that period and I'd made calls for prices and gave him money to get them for me…it was Sako that he brought. I’d done some things with the man on the past and he was trustworthy. I didn’t know anything about the product but I trusted him.
Now, here’s the issue. The battery was running down fast with just my standing fan of 70watts and charging of phones. It would go from full charge to less than 50% by morning even though I started the system around 10pm. I had to send it back. The factory tested it for 2 weeks and said the battery was good but that we have been charging it wrongly. They told the man (my installer) how to set the inverter to charge it well. I think they said it should charge at 15amps or so.
Few days ago, I bought Scanfrost Inverter freezer. The freezer is amazing…starts running at 145watts and goes down to about 45 to 50watts in the space of 2 to 3 hours when the compartments have maintained a certain temperature. My battery charged full yesterday as I wasn’t around and didn’t use it during the day time (I’m using 4pcs of 550watts panel for now). I ran the freezer from 7pm till 7am this morning and the battery that has 6bar has gone down to 1bar which means it’s already less than 15%. Only a standing fan of 25watts and the freezer were the loads on it. Please is this right?
Attached below are pictures of the load rating I met this morning; the battery bar signal; and my setup (not a neat one though due to some back and forth, had to change the inverter at some point thinking it might be the problem; but we plan on confirming that the system works well before looking for aesthetics)
PLEASE HELP ME🙏🏼🙏🏼🙏🏼 Thank you so much
What you've said isn't sufficient to say your battery is bad, you seem to be using the inverter screen for your measurement and that would most likely give you wrong information.
Use the battery's screen, snap the SOC and remaining Amps and let's see what you have.
Penuelseun: You can overcharge your cells if you don't have a BMS attached and your cells are not balanced. The BMS is not only for over and under voltage protection but also cell balancing
This is the most important function of the BMS especially because the cells are connected in series. That's why lead acid 24V, 48V usually failed early and we tried adding battery balancers as watchdog back in the days.
ice cream machine 2 chillers 1 2hp LG black mirror AC 1 deep freezer Shawarma toaster machine (this seems to be the problem when turned on)
when the BMS started tripping off the battery plug suggested i change the BMS from 150A to 200A which i did and so far it doesnt trip off only now the inverter trips off.
At installation i installed a breaker on the output of the inverter but it kept breaking so i had to bypass it
What was the breaker rating ?
All these seems like guess work. Do you actually know the maximum instantaneous load you use? Also including surge ? Even If you really want to go the tbb route, you must have an idea of your load in order to determine what would fit rather than doing another trial and error.
adewasco2k: Please guys, can i use AVR to solve this issue i am havingon my system?
i initially had a 6kva hybrid inverter but some times when some appliances are turned on, the surge will trip the inverter off and shows error 07, i upgrated the inverter to 10kva then when such surge happens it was the battery BMS that trips off because its a 150A BMS, i changed the BMS to 200A now when such happens its starting to trip off the inverter again but now with error 09, its just all frustrating and i know i will need to get an inverter that can handle such a surge like a transformer base inverter like TBB inverter.
But i am just thinking if there is a way around it before i garther the money to change the inverter.
Tucode: Hello guys… I got an SMS Gold 15kwh lithium battery in mid December and it’s connected to a 10kwh sms hybrid inverter with 20 550w solar panels. I have been using the system without any issues for a month plus until last week when I noticed that it does not charge beyond the 5th bar (the battery had 6 bars). About 5 days ago, it charges up to 85% before it stops charging, 2 days ago it charged up to 82 before stopping, yesterday it stopped charging at 77% despite the fact there was still peak sunlight around 1.30pm. I observed that once the battery gets to the 5th bar, the PV immediately drops to like 200w from like 3500w just like it does when the battery is already fully charged. What could be the cause of this? Are the battery cells being damaged or what? Please I need help with this. It’s been frustrating for me because there’s been peak sunlight where I am and my battery will just stop charging around 1pm.
What's your battery voltage when it stops charging ?
GloryJoyeux: Sundry is the original OEM for Sms, welion etc inverters. The newer models with ‘actual’ dual mppt controllers work brilliantly and as you can see, I’ve established communication via solar assistant with it.
Cworth batteries have been incredible, they actually use brand new cells. I established communication using CAN via pylon protocol and so far so good. I have done up to 0.5c on them with no issues.
Cworth panels surprised me, they have been keeping up with the Jinko panels in terms of yield, sometimes even outperforming the jinkos. Believe me, if maybe I didn’t have the raw data, i wouldn’t have believed it’s possible.
mctfopt: Please can we allow people share their experience on this platform without attacking the messenger? Some may have things to share, which they may be reluctant to share, if they see attacks on people who share their experience.
He could have comfortably zoomed in on the display and we would not need to struggle to see the screen, that would have also avoided showing the product sticker without issue, but then, we all know what we are doing.
BigDickProblems: I set the Absorbtion to 14.4V, and since you can’t change the float voltage of the Controller if you selected lithium battery “Lib”, it will use the same 14.4V as the Float voltage. However, I know that Lithium ion batteries floats at 13.6V.
Tha maximum charging current is 30Amp.
Did you set the battery voltage in the CC ? Set it yourself, then also use a multimeter to check the battery voltage directly, don't trust the CC's display voltage, use the multimeter's reading to set your bulk and float on the CC, you can reduce the values by 0.2 too just to give some room. Check if there's any changes.
Juror: I have a stash of 18650 cells for sale, some Samsung cells I bought from tetralogy(some never used and some I tried with a project and discontinued) over 150 units and many cells I harvested from laptop batteries (quite a lot, over 200 or so).
I am also selling the spot welder I bought from AE, never used it at all.
Was intending to build cells for my ebike but I changed direction.
I have a stash of 18650 cells for sale, some Samsung cells I bought from tetralogy(some never used and some I tried with a project and discontinued) over 150 units and many cells I harvested from laptop batteries (quite a lot, over 200 or so).
I am also selling the spot welder I bought from AE, never used it at all.
Was intending to build cells for my ebike but I changed direction.
Ferdiwar: Since I installed both panels the inverter have never pulled more than 12A from the panels. The highest I've seen from the CC (MPPT 2) with the Jinkos is 12.5A and about 10A+ from MPPT 2 with the Longi panels, so it's not the current but voltage.
I'll open the inverter and check the connection inside.
We're waiting for the revelation, or probably you have a different DEYE variant ?
Satellite TV Technology › Re: Solar Energy, A Complement To FTA by Juror: 10:16am On May 12, 2025
