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Most would connect the shore power charger as well as the mppt / solar charge controller directly to the battery (assuming they're different units). If your installation is similar, then both chargers would need to be programmed to the same set points. If you only set the solar charge controller...

Probably why they failed catastrophically at those potential. The flipping of the terminals means that the traces are crossed internally and if the two traces are close enough to one another at the crossing, poof!

An inverter doesn't care what your batteries are as long as they have enough power. You can grow your battery bank as large as you want(keeping it the same voltage) and keep the inverter and or charger the same (Growatt is all in one). The inverter would only need to "grow" if you plan on more...

I had no idea such a product like the switch bot existed! Sometimes I get so lost in my little world of microcontrollers and programmable logic devices that I just don't know what's out there! If already have an internet connection to your cabin and you have WiFi devices connected to it, you're...

Doesn't work like that. Adding the battery in series would not increase your bank to 300aH. It'd increase your voltage. You'd want to add your new battery bank in parallel. You have to be a bit careful here as you do want the additional battery to be of the same chemistry (eg Lifepo4 or Li-Ion...

Switching your modem / router / weather device to the battery bank will likely be easy as they're likely already DC devices running off some wall adapter. I'd go with some cheap adjustable DC to DC buck converters. I use something similar to these on amazon. Step Down Converters For the...

It really depends on your battery bank. I have a 2.5-Gallon water w/ a 1500W heating element in mine. It really depends on how often you're depleting your hot water. The absolute worst case scenario for us is that everyone (4 of us) has to shower on a cold night where we all deplete the hot...

I think it's important that you understand the charge curve of your battery banks. Once you fully understand that, then the answers you're looking for will be much more clear. You can use generic LifePo4 charge curves or measure it yourself. I would personally first start by measuring the IR...

I don’t see how it cuts off as you don’t have a cut off relay / switch / FET. Your particular mppt doesn’t appear to have a load terminal.

Have you been abusing your renogy batteries by drawing more than 50% of it's rating? That'd cause accelerated wear on lead acid batteries. That's the real advantage of switching to the lithium batteries. A 200aH lead acid battery would have ~half the capacity (assume similar voltage between the...

I suggest that you disconnect one battery and let the remaining one charge up to capacity. Your profile will charge the batteries to 14.2V and then stop. It will then switch to "charge" the batteries at 13.8V. Should the batteries drop below 13.8V, it will bulk charge it back to 14.2V. You can...

The physical wiring of your system looks to be fine. I think your problem can be one of two things. 1) A defective battery 2) An incorrect charging profile For scenario #1, it's possible that you could have a defective battery that's pulling down on the other battery that's in parallel. Have...

How is your MPPT configured to charge the batteries? Is it for a lead acid profile? What is your bulk / float settings? Do you have a battery charger for the bank when there is grid power?