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The balancer leds turns on when cell voltage differences are >0.2V. This should not happen between 3V and 3.5V cell voltages on equal and balanced cells. The balancing current of such balancer is usually lower than 1A. This may be enough for new and equal cells with small capacity...

The 36 BLS cells (200Ah Brand ETC) I bought 14 months ago are used as 2 * 52V banks in parallel (32 cells). I expected to get about 20KW storage from new cells but 15KW was really the max in the beginning due to large cell capacity differences. Now after 14 months I hardly have 10KW available...

Of course during the year the conditions are usually not optimal and it's normal to get less power. But I compare with my other panels; so if these deliver max power, the others should also deliver max.

When new panels are rated 100W and deliver that power in bright sun at normal ambient temperature then it must deliver the same output 1 year later in the same conditions. Losing 20% after 10 years is normal, not after 1 year. My panels with 5 busbars did not loose any power in 3 years.

XINPUGUANG brand: In 2019 I bought 12 X 100W Solarpanels from Aliexpress / XINPUGUANG. Dealer is ok, neat product, well packed, 75$/pc. These panels have cells with 2 wires (busbars), only 1 bypass diode. Some crimped cables became loose in the junctionbox. I soldered them all. I got 1200W in...

N Sorry, Supervstech, I was too fast with my answer :)

You are right. It's my word against others. This discussions are too long already. I have tried to warn people not to invest so much money in such risky batteries. If you want to buy from BLS, just do it; after all it is your money.

Sorry, I really do not believe you. I post a screencopy from a 2 months old chat with BLS and a couple of hours later you can post the full chat as an ordinary customer! What kind of company sends private customer communication to other customers just to prove they are right?? You are Mr...

For those who read the full chat: another BLS lie: The promise of free return is fake to get customers trust. It's absolutely impossible to send such cells into China, no matter what the reason is, it will be rejected by customs. And it would cost more than the cell to send such heavy...

I think you ARE BLS ! Who else can have the full version? I thought already from your first reply as new member and your writing style. So you did not buy 175 and 150Ah cells that performs well. Always lying about everything.

You don’t know why I want to warn other people about BLS? Losing 4900€ getting 36 end of life cells instead of new, is that a good reason for you? Your cells perform well. What does that mean? Did you do any tests other than connecting your load and getting some power? Any measurement to...

BLS battery is the worst of all Chinese sellers I have dealt with. They seem to be reliable and correct at first sight but the real face shows up when you have issues that may cost money to them. Forget the warranty, financial compensations, the promises and the quality. They are first class...

You are free to buy where and what you want but you should know that BLS and most other Aliexpress high capacity Lifepo4 sellers are actually recyclers. They buy end of life battery packs that may have 2000 or more cycles already. They disassemble; clean up the cells and apply new covers and...

Hmmm, I don't know. Seems to be overpriced for a 8S concept with small LCD. It has a separate power input for the CPU over a buck converter with separate ground. Seems unnecessary with large battery power available. Mosfets are very small to drive 4-5 Amps. If very low RDSon, ok. I doubt...

I bought such 16S balancer and I thought first it did not work as well. Actually it does not start balancing at 0.1V difference as advertised. There must be more than 0.2V diff. It does not balance until 30 mV difference, it's more 70-50mV. Now it does a good job, even it starts a little...

Yes right , but with RDSon of +- 5mohm that should be 12W at 50A (I²R) , divided by 7 mosfets is less than 2W per mosfet. Since I did not use more than 50A load and charge, I guess they used very cheap mosfets with high RDSON because plastic will not melt from 2W, certainly not with 2.5mm...

Every mosfet, even the same production, has a small deviation. For this reason parallel mosfets should always have small resisters (4-8ohm) in series with the gate. If not, some mosfets will ignite first and get the most inrush current and can fail. Then the next follows, etc Daly does not...

There is current detection on the mosfet board. But that's all there is on the power side. They drive the mosfets parallel in groups of 7 and they measure current. They just add more or less R003 resistors depending on the model they sell. They use 220 ohm resistors and a small mosfet to do...

Here you can see most of the mosfets have heated up and molten the plastic, except 4 of them. The reason is that Daly put an aluminium sticker on the heatsink above 4 mosfets (see red line). These made better contact with the outside aluminium plate and the others less. So they heated up...

That's the plastic they used to make the electronics invisible.

Pretty empty he :) No sophisticated IC or mosfet drivers or whatever. Just what I expected. There are 14 Mosfets for the charge port and 14 for the B- P-. They come from a Chinese manufacturer with very few component diversity and they are 37A 10V. Have no idea about RDSon but I guess it...

I guess schematics will be topsecret for Daly. They would not mold it so well if it was open source :) Don't expect advanced technology...

Anyone interested to see the hidden electronics of a molded Daly BMS 200A 16S with separate port and balancing? I just dissected it to the bottom even they glued it very well together.

Strange that you still reply them

We should all buy more local quality but it's so cheap in China... It's best to test as much as possible and wait until the last day before clicking Received. We have still 14 days for a dispute if the case is finished automatically. If you got crap and you are too late for a dispute, open...

I know this BLS topic gets old but I just want to add this mail I got today from ETC manufacturer as a last word: Hi, first of all, we are very regret to hear such news. We can confirm that it is not a qualified product of our ETC. Secondly, please don't believe that the price is too...

That's right. It must be very difficult for those Aliexpress people to judge about so many different products. Buyers are not always honest as well... So we need to provide clear evidence to make that decision more easy. Sometimes that's difficult. But it's more than that. Buyers and...

Wise decision! :)

How do they balance 30mA with high impedance inputs? It's more than an input. Also high impedance inputs can be easily damaged. ADC inputs from an MCU are also high impedance and can be quickly damaged with small overvoltages and a few milliamperes. That's what can happen to the BMS if the...

I do not agree with this too. There are many unreliable Ali sellers who try to escape when they have to refund but Aliexpress does a real good job. As you can see I have quite a lot of orders there. And many disputes over the years. But I only dispute with good reasons and with decent...

Like you said: that's the theory. Good matching cells do not need balancing. Balancing is made to compensate small cell differences. Daly had totally no effect on my cells, not even after a week without charge/load. The Broodio 16S brings the cell voltages equal to +- 50mV after a few hours...