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Hi Team, What gauge wire should I use to connect the two batteries together in parallel? My stuff: Batteries: two 12V, 100Ah SOK LiFePO batteries in parallel. Inverter: Renogy 1000W Pure Sine Wave Inverter 12V DC to 120V AC Panels: 200W of solar panels Charge Controller: MPPT 75V 15A 12/24V...

It's late and I might be a bit stoned but I'm thinking about electricity and water and gas. Let's say there are days where your batteries are charged to 100% by 12:00pm. What to do with the extra electric power you have and aren't going to sell for 1/100 the price to the power company...

Hi Team, Uncle Will's book recommends 8 AWG for charge controller when CC is 40A or less. I have some #8 wire and it won't fit. See picture. 1) Is #8 Gauge the same thing as 8 AWG? 2) How do I solve this connection problem? Use a larger number gauge? Is there a connector/adapter to use?

Hi Team, I don't know the right words to ask what I want to ask so bear with me. I did a small solar project and now I want more! This is the most fun I've had doing projects since I don't know when. I have a small solar power system (400W) that I'm planning to scale (right now it powers a...

I was connecting my new charge controller when the battery wires touched briefly ( < 2 seconds) and now my battery voltage reads 2.2V or something like that. All three batteries (in parallel) were nearly fully charged when this happened. What do I do in this case?

Hi Team, I hesitate to ask these questions because I'm not sure even *how* to ask what I'm trying to ask. Sorry in advance. I just don't have a good intuitive feel for grounding and I need to talk it out in some way. What I think I know: Grounding a system provides an alternate path for...

Hi Team, Can you recommend a 12V LiFePO charger to me, please? I'm thinking of something like this...

Hi Team, I'm a bit new to batteries and learning as I go. Here's my setup: 12-volt lead acid battery charged by two 100-watt solar panels via 30-amp solar charge controller. The battery may well be complete junk, it's an old car battery I was using in an RV. It completely discharged (which I...

I have three 12V 100Ah batteries in parallel, which I think presents as a 12V 300Ah battery. I have the https://www.amazon.com/gp/product/B07429RK43 Epever Tracer 4215BN When I go to set the battery settings on the MT-50, it shows LFEPO4, which is fine, but it also says 200Ah. I'm able to...

I have 4 x 100 W panels and on a clear sunny day I max out at about 290W. I tested each panel independently: Panel 1: 78W Panel 2: 74W Panel 3: 64W Panel 4: 67W Seems each panel puts out about 60-70% of rated theoretical output. Is this expected? I'm going to add panels to my system but...

Hi Team, How many panels can I safely connect to the CC? Looking for someone to poke holes in my logic, please. PV: 2 x 100W Rich Solar (see attached) CC: 75|15 Victron Trying to figure out how many of these 100W panels I can safely connect to the CC. If I connect the panels in parallel...

Hi Everyone, Can I safely use this to charge a 12V sealed lead acid battery? Thanks

Hi Everyone, I've attached a simple diagram to show the setup I'm intending to build. Where does ground go in this picture? Also, if I'm just charging my batteries and have no inverter or other load, do I need a ground for that?

Hi Everyone, I have a 100W panel connected to this solar charge controller: https://www.northerntool.com/shop/tools/product_200833022_200833022 what should the voltage drop be across the output of this controller. When I say output I mean the part I connect to the battery to charge. Sorry if...

Sorry in advance if this is bad science. I had a thought today as I was trying to figure out ways to get more "free energy". See picture. What about the idea of mounting a sort of diffuse fresnel-type lens in front of a solar panel to increase the "surface area" of the sun's rays that get...