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Thanks all. Used a pencil and it worked fine.

Hi All, I read the guide on over panelling common MPPT controllers and I have a quick question. The guide / charge controller says a max over panel of 780w @12v for the 40a model. I assume I would be fine with 8 x 100w panels as they're unlikely to ever be over 97.5% efficient. Any issues...

Sorry, you seem to misunderstand me. I'm aware of the above. What I mean is a) I can get 200ah 12v batteries for like 800 euro, delivered in a day or two. I can't get 24v or 48v batteries at all, let alone that cheap or quickly. B) because I am running a full off grid system I would prefer to...

I'm currently running 4 panels, 2x 100 w in series and parallel. Panel V is 12v, so if I've worked it out correctly. Voc should be 24v?

Combination of OCD I'd like them to match haha, though this is not really an issue. It's more ease of availability, I can get 100w from amazon delivered tomorrow.

Thanks all. I have decided to return the inverter and reconfigure the system to 24v. I appreciate the input.

Hello, I'm looking to wire up my house. Most of the 3000/6000w 24v inverters I see Will recommend and can find easily on Amazon have 2 regular outlets to plug in AC devices but very few have terminal blocks to connect a distribution panel to the inverter. As I would rather not have extension...

yes , sorry. It's 12v.

Hello, I was using my set up to power my electric hot water tank yesterday. I have a 3kw inverter and 2* 2.5kWh LiFePo4 12v batteries. When I turned the heater on the batteries were showing a voltage of around 13.5v and approx 75% charged. Over the next hour or so they dropped rapidly to...

Hello I am currently located in Italy and my set up calls for 4/0 to connect my battery and inverter. Unfortunately in Italy they use mm2 as the unit of measurement and I am only able to procure 95mm2 cable unless I ship it in from the states. The latter obviously takes more time and money...

Many thanks! Unfortunately those brands are over my budget. I have found this 24v 3000w Inverter charger for sub-$500 and local to me...

It's a stationary set up. The only reason for running at 12v is I can get very cheap 200ah batteries but only in 12v. After seeing the advice above I was planning on running 2 of these in series as per Will's video on how to do this correctly. - Q1) Can this be done safely with 4 in series to...

Hello. I have a 3000w 12v inverter, when I connect it to my lifepo4 200ah 12v battery there are sparks and then the battery enters low voltage disconnect. Do any of you know why this might be happening and how I can avoid it. The current sequence I am following is: - attach main fuse to...

Hello, I have two LiFe4po 2.5 kWh 12v batteries and the weather is starting to get pretty cold where I am. The batteries do not have an internal heater and I will need to use them throughout winter. I live off grid is an old unheated stone house in the Alps so the room they are kept in is only...