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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...

Compared to many other Chinese sellers, BLS is certainly different and more communicative. Coincidentally, I even got a spontaneous email yesterday to ask how my test were evolving. If something is good, I tell it as well. I am double testing every cell and still got no more than 174Ah...

@ScoTTyBEEE I am in the same situation. I bought 16 200AH from chinese seller BLS Battery and got old crap. I bought a new set of 16 cells and got good ones. These are always in balance but the first 16 are always unbalanced whatever I try. "electric" said it's better to do top balance only...

When a panel is half shadowed you will not get cell damage because the current through all panels in series will drop to almost 0. So there is not enough power to heat up any cell. The worst case is only one cell that gets (partially) shadowed in bright sun. The cell becomes a resistor at high...

Thank you for your extra advice! You don't have to prove something. I knew from your first question already, you know very well what you are talking about. You are right, temperature is important. In my selfmade BMS I monitor individual cell temp as well and I keep them all in a very stable...

@Deno I use HA02 balancers from Aliexpress They are made for LA not for Liion. I use for 2 years; 1 per group of 4 batteries, very effective. HA02 24-48V 2-4 batteries. 10A bal current +-35$ For LA batteries in series, a balancer is really necessary to get max battery life and max...

It' s very easy (cheap) to disconnect the low side (-) with some parallel mosfets but it is not so easy to do it for the high side (+). Disconnecting ground reference is never a good idea but in case of such BMS, yes they stop the current flow and don't care about your other circuitry. I...

@Klspahr If your product is decent and you are sure about your specs, then you make decent product documentation. If not, like Daly, then you make your electronics invisible by moulding and give a minimum specs. On my Daly they do not even printed the 30A for the separate port. And I cannot...

Interesting.. I think this is correct for summertime. In wintertime it's far less than this.

Hello again, I started celltests with my datalogger. I also measure temperature at the center of the cell during Charge/Discharge. The cell lays down flat on a table, a precision digital sensor DS18B20 is taped on the upper center and covered by a 2 cm foam to eliminate ambient temp...

I hope you did not buy the Daly 200A 16S BMS already.. I bought one 6 months ago and it died after 4 months just by plugging in the 16 pin connector. There is only 1 ground B- pin (black wire). It should be longer than the other pins to make contact first but it is not. So the control board...