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I have 2 metres of copper bar measuring 10mm X 25mm. Is that thickness too big to use as busbars on 320ah batteries in parallel?

Hi everyone been awhile since I posted last. Does anyone have any experience or opinions on the JBD Smart BMS With Bluetooth Passive Balance 6-21S 200A Battery Management Board, out of Docan. I am going to b needing 4 and want to get best value, with very best performance. Any thoughts?

I have been in contact with Jenny Wu from Docan in China. Recently she sent me details of various cell, I asked a question relating to price and got this statement back. "CATL LF302 and Hithium 280ah, they are ESS grade, for energy storage system" I am in a permanent RV home situation, with...

I have 2 seperate 3000w Victron Multiplus inverters. Due to model difference they can't be paralleled. Am I able to take AC input to one of the Inverters then daisy from that to the AC input on the 2nd Inverter, or should I run two seperate input sources.

What's the best way to maintain balance and soc between 4 320ah 12v batteries wired in parallel. The cells will have all been top balanced correctly prior to creating each battery. One of the recurring problems I had with the commercial batteries that have basically proven unsuitable, was...

About to build 4 x 320ah lifepo4 batteries 12v each. ( for all sorts of reasons I can't go 48v) I have 2 x 3000W Victron Multiplus, each one stands alone. If each inverter was working at peak then my total amp draw from my batteries would be 3000/.93/12x2 = 538amps. If my calcs are correct that...

Hi, I am going to build a 48v battery for my updated setup. However I also need a small 12v battery for my 12v appliances. Using a step down 48/12 converter will I still need a BMS in the 12v battery?

4 posts in minutes from 'representstr' all in Chinese. Is the forum being hacked or perhaps targeted by someone.

Hi Finally I won my argument relating to 'not fit for use' lifepo4 batteries. Getting a nearly full refund. So now I will be building a 48v lifepo4 battery for my motorhome. I am also changing to the Victron Multi RS Solar 2 Tracker Inverter/Charger 48v. I have access to both solar already...

Hi, I have been having issues with a commercially available battery and I would like to ask for some clarification. The batteries are 12v 340ah lifepo4. Made up of 2 x 170ah cells in parallel and 4 x these mini packs in series to give the 12v/340ah finished product. They have a Daly 200a BMS...

Hi, I have an off grid system in my bus. The locker containing all my equipment is subject to high environmental temperatures. I would like to fit an exhaust fan to it, to start/stop automatically via a set temperature range. Does anyone know if any of the following Victron items could do...

As I move to redesigning my system to a 48v one, I have been looking at pure sine wave inverter chargers, I currently have 2 Victron Multiplus 12v which I will be selling. The disparity between price of various Inverters is bewildering. I have attached two screenshots. According to the...

I am going to review my entire system from panels to inverters. This way I can clarify what I "think" I know and what I definitely do "not" know. I am going to take this in bite size pieces. 8 yrs ago a company built and installed a 12v system for me. At the time I knew nothing. The panels...

I have the below charger, it's for lifepo4 specifically. Some of the videos I have been watching suggest charging up new raw cells in a 4s configuration in series before changing to parallel to finish top balancing them With this charger though there is no readout, it's simply a red light for...

I want to build 12v lifepo4 from start. I was sent this Equalizer some time ago to balance my existing complete 12v batteries that are in parallel. From what I can see on eBay this unit is for 48v battery. Can someone enlighten me please. Thanks

So I got some great information from one of my other questions. It led me to realise I need more information. So is there a resource that takes a beginner from purchasing cells, to testing equipment required, to software to test, to understanding the whole testing procedure and what terminology...

Reading a wiki on Reddit regarding all things electrical in the battery world, came across this information. Can someone expand on whether this is correct. I have 3 X 340ah lifepo4 batteries in parallel exactly as I was instructed by the supplier and as shown on just about every solar wiring...

During a conversation today with a major supplier of lifepo4 & AGM Batteries etc. The tech I was talking to stated that for an entirely off grid installation like me in my home on wheels, AGM batteries were better than Lifepo4. I have never heard that before and he states that Lifepo4 require to...

I had an internal Victron mppt fire last week. Supplier gave me a new one. Didn't tell me it was a 12/24v charger and default setting was 24v. I failed to check that setting and connected my 2 X 340ah batteries. A day later the 12v appliances starting acting weird, and I immediately went to...

Haven't quiet found the answer to this problem. I want to correctly size a battery disconnect/trip switch, but not sure what amperage to get. I have two 3000W victron inverters drawing power from 3 lifepo4 340ah batteries in parallel. The only Amp data I can see is that of being a 150A...