Recent content by Mark1988

Hi! I'm trying to calibrate my Growatt SPF 12000t HVM to correctly read the battery voltage which is currently 0.5V too high. Does anyone know if there is a service menu one can access to apply some kind of a voltage offset in this particular model? A quick google search returns some...

Do we know how big of a relay we would need to use it as a switch for the Heltec balancer? Ideally I'd only want to engage the balancer in e.g. Python via Raspberry Pi when needed.

Brief update for those interested, EVE (Alecia on Alibaba) said that the cells were repackaged by the forwarder before being given to the courier company for transport to my home address. I'm not sure I believe that as what would be the point of that and I don't think a few hours on the back of...

Hi, thanks for both of your responses - that's very helpful. I like the idea of eliminating 1 set of cables that need to connect to the busbars by routing them via a molex connector - this is really good thinking. I've emailed Daly to see if they see any issues with that and to also check if I...

There is no need to get defensive, I'm just trying to learn and get to the bottom of things. Having said that, if you can't explain your reasoning and instead end up appealing to spending a lot of money on expensive courses as if that was a valid argument then perhaps I should wait for someone...

That's the thing though, 7AWG x2 is not enough to carry the 200A JK rate their BMS for, which is apparently a well known issue with many Chinese manufacturers where they cut costs on the cabling. Putting those undersized cables in silicone makes them less of a fire risk (doesn't completely...

Thanks for the PDF - it looks very interesting. Could you clarify some of the other points for me though, I've unpacked them below like this: 1) Will's argument is that top balancing beats active balancing which I don't disagree with when you have grade A cells which I don't - mine are dented...

Hi and thanks for your (very!) swift replay. Re Q2: Yes, the block format where you have the vertical bar on the left hand side will be slightly shorter than the remaining horizontal bars - I'm not sure if that's a problem for the BMS / Balancer or not. Re Q4: I initially wanted to use this...

Hi There, I'm planning on making my own busbars for an S16 48V battery and a 12kW off-grid inverter. I can see that many battery manufacturers seem to have stopped placing BMS and Balancer leads directly on the cell terminals and instead, they seem to be now placing them in the middle of the...

It is precisely because they're a large company why I think they are intelligent and experienced enough to know how to package up a handful of cells. I don't understand your argument, since it was apparently worth their time and effort to agree to send me 16 good cells, sending me 16 bad ones...

That's right, they're the manufacturer - that's why I ordered my cells directly from them. I've already informed Eve of the issue but given how poor their customer service has been so far (e.g. they haven't been able to send me the tracking number for like 3 months...) and that some of the...

Hi All, Today I've received my first order from Alibaba and EVE Energy (https://evebatteryglobal.en.alibaba.com/?spm=a2700.12243863.0.0.2ce83e5fYxTya4) and it's been a complete disaster. I've ordered 16 of their new 6000 cycle 280Ah cells - unfortunately most of them have arrived damaged...

Yes, that's right, that's the plan however, I wonder whether the charging profile of the Inverter is not going to clash with the charging profile of the BMS...? How will the Inverter know how much voltage to supply to the BMS without there being some communication? Also, on a separate note I...

Thanks for this, that's very helpful. Yes, I guess you could say that. I suppose I'm still trying to get my head around various options etc.

that's very kind, thank you