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I have two sets of batteries I’ve tried. I started (last year with) 2 celltower battery backup AGM batteries with not enough capacity. They worked ok. Now I have 4 Wieze 12 volt AGM 100Ah in series and parallel 24 volt). The Wieze have woked great all summer. They slowly dies in capacity this...

I’ve been running this for almost a year now. This November is started surging and killing batteries at night. It seems like the inverter is restarting and drawing a surge and using batteries. I have it set to use solar then battery and then cutover to grid. Only charge batteries on solar...

Mine is doing this too with no load (nothing on AC circuits). I’m wondering if you found what this is?

Thank you so much for your reply. I appreciate it. These batteries weren't free and not cheap to me. This is my first system and am overly excited to use my backyard tools and pellet smoker on this system. I have about 1450watt panels - what batteries would you recommend on 24 volts? I...

I am trying to figure out these batteries specs and how to set my Growatt 3000LVM at 24 volts. Using two batteries in series on my DIY solar. Hello everyone, I found these are sealed AGMs, 6 cell. low float charge = 2.25 vpc high float charge = 2.3 vpc low equalize charge = 2.35 vpc high...

Well, my volts are consistent across the four panels at ~36 volts each. So, with them at 2P2S I get 72 volts.

Hmmm, Could my amps change because the MPP shuts it off? In other words, there is no load, so the panels go nowhere. I do have volts, just the amps change, hence the watt input is changing. Is that right? This is my off grid system, there is only the small load powering the AIO Growatt 3000...

It works!

That makes sense to me. I will look at rewiring them to 2S2P. Still I am wondering if one of my panels are messing up. I am just losing amps, not volts. No shading.

My wiring is quite long (70 feet) already after the panels (6 gauge). For instance. If all four are near each other right now they are 2P2S then the string goes to my MPPT. If I change it to 2S2P it’s still the same volts going to the long string to my MPPT right? I’m wondering why is it a...

my volts are consistent at around 70 volts, but my amps continue to change. Thanks

I have the Bouge RV 10 gauge 2-1 connectors...

I have Aptos 365 watt panels 40.8 voc 11.33 isc 34.00 vmax 10.74 Imax It says max voltage 1000v Series fuse 20A Thanks

There is no real difference here right? It will be easier to wire my panels 2P2S than 2S2P. So I’m planning to do 2P2S. Or is it a problem for the diodes In the panels? Thanks Nick

Hello everyone, I want to check my numbers and wiring size please. This is an off-grid build. I have four PV panels - 365 Watts VOC 40.8 V Isc 11.33A Vmax 34.00 V Imax 10.74A 2S 2P = 81.6 V and 22.66 amps I could run 8 AWG and put a 60 amp fuse, right? I should run 6 AWG and put a 80 amp...

I have a 500 and was wondering the same thing for mine. Although, I am looking at my 365W (40.1v) panel. According to Jackery.com website on the 240: https://www.jackery.com/products/explorer-240-portable-power-station Management System: BMS, Over Voltage Protection, Short Circuit Protection...

OK, so it looks like I do indeed need to ground the inverter as seen here: https://diysolarforum.com/resources/ground-fault-protection-on-solar-panel-arrays.148/

Talking this over with my GF, it looks like the GROWATT is the way to go. She suggested this can go in the shed. The shed is already wired for multiple outlets in the backyard. Seems pretty simple now. Now, to find a great deal and/or decide to go 24volt or 48 volt. :) Is there anything...

Where is "local"?

That's very nice, but much bigger than I am willing to do (or need right now). I am even beginning to wonder if I should pursue 4 panels and just get two (700W). I will have to do some battery calculations.

Seperately, I am looking at $540 for Inverter and MPPT. This doesn't include the all the little copper and connectors that I would need for the separate components. The first one, seems to only allow 25A at 24 volt. For $642. Oh boy that Growatt looks REALLY interesting at $769 online. 3KW...

I am not sure what batteries I would get. At this time, most likely some cheap 12 volts for now. I had big ideas for two 100Ah LIFePos. But, until I have better idea of my draw and how often we use it, I think I will wait for this costly upgrade (relative). I was wondering if the 40A SCC...

Thank you for the reply. TEMPS I am in Northern California, I don't think we ever get below -2C (hardly ever below 30F) where I am. We have gone to 48C (118 F) though. MPPT The Epever shows it is 150v at 40 amps. There is this (cheap$99) one on amazon -...

I am looking to build something like the https://www.mobile-solarpower.com/2000-watt-24v-solar-system.html I don't have a need for a 24 to 12 volt appliances. I plan to build this for off-grid, in case power goes down and to use it occasionally for fair weather outside use. Are my numbers...