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Absolutely true, that's why you want to use special terminal grease for alloy getting in touch with steel (or copper) to avoid contact corrosion. I've used WAGO 249-130 for everything getting in contact with my battery terminals. Agreed That is of course the optimal solution. However, as...

:ROFLMAO: :ROFLMAO: yeees, something plastic, else i'd have some major other issues i assume ;) It's a mounting for the Daly BMS temperature sensor, which "connects" to the battery valve of cell 4. yours, Juergen

The main reasons were: a.) easier to handle (assemble / disassemble) when the busbars have their own attachment b.) fom electrical point of view it will imho not make any difference due to neglectable currents (practically nothing to BMS and i've measured 1A to the balancer when balancing the...

Hi Folks, Guess when i've connected my shiny new balancer... ? Case closed imho ? Thanks again to everyone who assisted me in this case! Have a sunny weekend, Juergen P.S.: Updated thread topic to be hopefully more helpful for the future

Here you go, should be fine imho. There is another reason which makes a defective balancer more plausible: since the active balancer was connected, it was never activated (which means the 2 "RUN" pins shorted; that extra wire is not connected in the picture), but when i got my first full...

These sound like the reasons why i don't want to bother using the BMS balancer, but to have a dedicated (switchable) active balancer so i have full (software) control on the conditions when to balance ;)

Afaik no, because it "balances" the cells by actually "burning" charging current from cells with over voltage. But concerning the rest, you're right of course, 20mA is better then nothing. However, i have to check the configuration abilities of the Daly Balancer (on/off voltage thresholds), i...

Ok i see, what i meant was: i could not see (monitor) any charging current - the SmartShunt permanently reported 0W battery power (or even a little discharge) after about 15 minutes after absorption mode started. Agreed, maybe defective cable / connector / PCB trace etc. I also got the hint...

In that relation i want to mention that there is actually no charging current at all since the SmartSolar charger switched to absorption mode. I have also disabled the loads (only a very minor load of ~0.5W is active -> MCU reporting data over WiFi). I have disabled balancing on the Daly BMS...

If there's something i don't have, it's patience :ROFLMAO: No seriously. Cell 3 is at a constant voltage and cell 2 is still rising a bit every hour.. i find this very strange and i'd guess my balancer isn't working, or does this make any sense to you? Sadly i can't source a clamp-ampmeter...

Doesn't look very promising after the first 3 hours ? The balancer seems to have minimized the gap between the already very similar-leveled cells, but the 2 "problem cells" are still slightly drifting apart. Will let it run in absorption until sundown and try to get an clamp-amperemeter so i...

Will keep that in mind for my next battery ? Thanks, just reconfigured the SmartSolar and will give it a try tomorrow (at least for ~6hrs) ? One more question about this: this should be done with activated balancer, right? Ok, that matches my observations so far. Will keep you updated...

Hi folks, As i managed to fully charge my new and shiny 8S 105Ah LFP battery for the first time today (beside top-balancing), i noticed a strange behavior: as soon as the Victron SmartSolar charger switched from bulk charging to absorption, the cell voltages of the battery started drifting...

Nope, PV input goes directly to the Victron SmartSolar into the battery. Battery output goes into the "grey box" with the MCU, which has 2 P-channel power-MOSFET switched outputs. One of the switched outputs is connected to centralized DC supply for my IT "infrastructure" (cable modem, WiFi...

Thanks for the praise! Of course you're right about the charger limit, however if i'd ever reach that limit, the SmartSolar would throw an according message on the MPPT state i think (something like "U/I limit"), which i haven't seen so far ;) Yes, i could install dedicated measurement...

Hello friends of sunshine, My name is Juergen and i live in not-so-hot-and-sunny Austria. ;) A few days ago, i've finished my 8S / 105Ah LFP backed "balcony power plant" and i'd like to share the experience i've made with this project with you: * Buying the LFP cells I've read/watched a lot...