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Got this today. Great deal and 350amps so meets my need for a third the proce of the Renogy! Yay!

Ooooh great find! I'd looked at that but thought it had a low amp for limit. Ordered!

$99 on Amazon. Just ordered it after accidentally discharging my solar bank. Testing here at home shows it works very well. Was easy to set up. If you’re looking for a coulomb counting battery meter, this is a great alternative. Works up to 500 amp hours on a 12 V battery.

Yep I like the app (but it crashes occasionally) but kind of wish I could get an mt-50 for it so it’s more self sufficient.

yeah the consequences of this disaster are vague. I suppose it wouldn't cause a fire, just a dead battery.

Will, after looking into the winter storage question, it's pretty clear that one bad event would be CHARGING THEM BELOW 32 degrees F. Apparently you get some crystals that pierce the internals and can theoretically cause really bad issues.

Good question! will watch this space for other ideas. I've been using a 12v pump for water lots of 5v USB appliances can be controlled from a usb charger socket, easy to install and 12v for automotive applications 12v ceiling fans 5v window box fans (via USB)

This one is a great deal, but it’s for common positive. I currently have a Renogy Rover 30amp that’s a negative ground model. What are the implications of common positive versus negative ground?

Happy to save a bit of money IF there's no real penalty. I'm hoping to get a 60 amp controller for an upgrade but they are few and far between, many don't support lithium explicitly.

So, if I want to charge my LiPO batteries from a wall outlet, can I just buy an amazon car charger like https://www.amazon.com/dp/B079FBWS69/ref=cm_sw_r_cp_api_i_L-0QDbAAYPSYR then plug in and charge? Also, it’s a 4a charger so should I assume it puts 4a/hr into the battery so a 100ah battery...

Looking at a variety of possible solar controllers (all mppt), Some specifically say they are lithium battery compatible and others do not. A great example is EPEVER https://www.amazon.com/dp/B07TTFWG4C/ref=cm_sw_r_cp_api_i_Xj0QDb8JN3HEE which looks like a great unit but specifically says it...

This, of course, assumes you have power in the first place!

The Mirage would be happy to host the convention ;)

2x3 then?

Voltage is a great point. I have four in series and adding a fifth would often exceed 100V. I should be able to fix by doing a string of 2 and a string of 3, connected in parallel. Right?

So, I have a Renogy Rover 30a controller being fed by 4 100w panels charging a 12 V battery bank. This puts me near the theoretical limit of what my controller can handle. E.G., 400W/12V = 28.57 amp output, near the limit. However, my solar cells are considerably off-angle. I've never seen...

suggested title for this thread: "Will tries to fix the Internet". ;)

Just did it here in Michigan. Sandy soil! augered in 3 feet and then pounded the rest without hitting rocks. Lucky! But my whole system is grounded now!

At cabin now. Went with serial and they are working great. Even with low angle and cloudy days are producing nicely.

I guarantee no CPU suffers from cold temps. I know solid-state devices and they're happy sitting in a bath of supercooled nitrogen.

one factor is that the battery isn’t water based so there’s likely nothing magical about 32 f. I bet Renogy would give will access to someone more knowledgeable than tier 1 support to get a better answer?

Yes this is the question. Many places say cold is good for storage; manufacturers specifically list minimum temps around freezing. People seem to universally say it’s a bad idea to charge the battery when very cold. But I think maybe they’re generalizing the charging caution to storage.

yes was thinking about underground storage as well. I also found that theoretically lipo batteries should be able to get VERY cold if not charged or discharged. Renogy seems overcautious. Also, I doubt their claim that the BMS has a thermometer and will shut the battery down if too cold...

Yeah, sadly I fly home so not an option.

Elevating this from another topic. I have two Renogy Lipo batteries that I hope to store in my cabin over the winter. This will mean they are sitting, disconnected, through a couple of very cold winter months, getting down to below zero. Is this potentially damaging? Some info on the web says...

No I’ll discharge first. I assume that the cold isn’t an issue while being stored, right? Just on recharge (which will be in warm spring weather)?

I fly home to Seattle, so have to leave the batteries. So I bit the bullet and did Lithium which I hope will self discharge little and tolerate the cold.

makes sense. Was hoping to make up for poor angling with more cells.

Yes very interested in this too. Am mounting a stationary grid on a metal roof. Is it necessary to do copper grounding wire? And the topic of grounding the electrical system itself is new to me.

Does this seem like a good solution for switching both? renogy rover li 30 amp

for setup, always connect the battery first, then the solar cells. for shut down, always disconnect the cells first. Basically, I never want power going into the controller with no place to put it, correct? Hey, one more question while I have your attention. I currently have 4 100 watt cells...

One thing I've recently discovered is that I can mostly avoid an inverter by hooking things up to USB outlets. This is widely possible thanks to two gadgets. The first is the 12v USB quick charge outlets usually put into cars and boats. I'm wiring these up in numerous locations. The second...

Actually, I think I'd need to put it between the battery and the whole circuit since the DC loads go straight off of the bus bar. But yes, thematically that makes sense. For the rest of my family I"m still toying with a full unplug since then it's SUPER CLEAR if it's been done or not. Am I...

My system is in a 2-3 season cabin in the woods. When I'm not there, I really want to make sure things are safe. Basically, I have a controller that connects to (1) solar panels (2) batteries. Diagram is below (by the way, any feedback on my wiring and fusing appreciated!). My plan is to add...

12v. in retrospect 24v would be a good option, but I bought renogy batteries that can't be serialized. 12v works well though.