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Hi, I have a small 12v setup mostly built around my need for off grid refrigeration. After a lot of guess work when designing the system and trial and error during construction I would like to share my results if someone finds it useful. When looking for info like this I found very little...

It's a single battery, dumb BMS with no external communication.

Hi, I have a small off grid system. 300ah 12v lifepo4, Victron phoenix 12/1200 inverter, smartshunt and 100/50mppt. All connected to rasperry pi with venus. Biggest drain is the big Bosch 220V fridge - standby 6W, compressor on 100W, defrost cycle 250W for 10minutes. In this config the...

Hi, I recently installed a small system in my off grid beach house. The all-in-one is a localy branded Chinese 1KW/12v device (FUJI solar) very similar to some MUST devices. I have 700W of solar and 12v 300Ah lifepo4 battery (cheap Chinese, also localy branded). I connected to the unit using...

I have only attached the graph from the event in question. Here are some graphs from a typical day. You can see that it stays in absoprtion for two hours almost every day.

I still suspect heavy dis balance in my 12v 300ah pack. The voltage starts dropping visibly after around 100ah get consumed. I have only remote control over the system (Victron VRM) for the next few months. I tried setting absorption to 14.2v as suggested but after few weeks (I am only on...

I've watched two relevant videos from Andy (Off-grid garage) and from what I can see from his experiments is that constant load can really affect balancing (). Of course here the question is if my 100W fridge should be considered a 'large' load or not. In another one he pushed the absorption...