Recent content by beckkl

The password for the .apk for the BMS version 3.0 is not 111111, it is seplos111

FYI, I stumbled across this video on youtube. It looks like the under temperature protection will turn on the heating fet....... after 30 minutes ;)

You can do a lot of things. Just was trying to figure it out using the BMS as-is, as it is supposed to be able to handle it. Turns out it was just some poor documentation on seplos's part.

Well, well well. After doing some youtube searching, it looks like someone recently discovered that the BMS CAN heat with the charge mosfets off. It turns out that the BMS waits 30 minutes before turning on the heating fet when under temp protection is triggered. Kind of strange.

No worries. I'm hoping that is what they eventually do. It seems like they didn't think beyond adding the heaters to help keep battery warm. Which if you had grid access is fine I guess (although likely a waste of power as you mentioned). I don't have grid access, so I think I will likely...

I'm starting to question if you are reading my replies carefully. The example you provide is not reproducible with a Seplos BMS. You cannot "let the heaters run, and not allow any other charge current". The BMS does not allow for this to happen. There is simply no settings in the BMS that...

I have solar assistant configured + home assistant, so can adjust the max charge amperage based on temp. But it is sort of irrelevant since I can't get above .1C with my current production.

Am I missing something? My concern is that early in the morning I will be charging frozen batteries for a time. See this post: https://diysolarforum.com/threads/seplos-heating-function-not-working.71172 Which is my exact setup. It takes many hours to take the battery up 10deg C.

Correct, it is an off-grid property. That is good to know about the efficiency of the insulation + heaters. I am hoping to need < 1KW a day to keep it heated, which sounds very doable. See my previous comments. My current setup does not allow this (Seplos BMS with heating pads). There is no...

Because in the morning I can't preheat the batteries before charging.

Others with the seplos BMS have confirmed, there is no combination of parameters that can be entered in the BMS to allow it to heat without charging. This presents a unique problem for me, as my setup is in an unheated shed in an area that can get down to -20C at night during the winter. I...

Just seeing this thread. Wondering what the though it is on charging Eve 304AH cells at say, .02C when below freezing. I just built a seplos DIY pack with the heaters, but it sounds like it doesn't preheat the batteries.

I ended up just splicing the switch wire and wiring up to a Shelly relay/dry contact. Ended up being pretty easy.

Ha! I had no idea such a thing existed.

For 3) So, if your turn on Power Save mode via Solar Assistant when there is a load, it will just turn off, then turn back on? Or are you referring to the inverter putting itself in power save mode when there are no loads detected? Edit: Yeah, I just tested thus with a load. Just switches on...