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So I wonder if it's possible to build a hybrid battery, maybe 20x 12v 10ah batteries in series? Based on Dr.Prius, an app that shows battery voltage, and charge/discharge information, I found the battery in my 2009 Prius normally ranged from 230v to 270v depending on its discharge/charging state...

Does anyone know if there is any reliable 12V to 19.5V cable for the laptop, it would be so much more efficient for power saving, and I can have a mobile power bank for my laptop. It must be reliable so it doesn't kill a $1700 laptop... I found on Amazon there is a 12v to 19v step-up DC/DC...

Hi, I am wondering if the idea works. Since It's very expensive to add more battery, can you simply put an extra freezer to convert electricity into cold ice, and use ice to cool down the RV instead of draining the battery? I am not sure if it's worth it, I think the idea is we will put the...

So I have a setup with Growatt(Growatt SPF3000TL LVM-48p), which works fine, but if I want to get AC charging from an EV port, do I simply get a "J1772 to NEMA 5-15 EV Charger Adapter" from https://www.evseadapters.com/products/j1772-ev-adapter-for-ebike/ and add a 220VAC-120VAC transformer...

So I have my 48V system built by a 4x 12.8v ZOOMS battery in series. Today I measured one was at 13.3V, and the other was at 13.9V after a month of use. It seems they are getting more and more unbalanced over time. Instead of buying a 12V battery charger and charging them one by one every few...

For the USE2 setting from Growatt to solve a charging issue, they bound floating and bulk to the same voltage. I found if I set my bulk charge voltage at 54V, it stops charging after 54V and will not come back until it drops to 52.3V, and the voltage would drop to 53V in a few minutes after...

So I just noticed the connector on my solar cable is heating up to 120F when I am pulling 2.2KW from the solar array. The solar array is 445*6 = 2670W, flat-mounted, so I don't expect it can pull more than this power. The solar cable has a rating of 30A, at 85V, that is, 2550W. The cable is...

I want to share my experience with the cons of the 48v system that I did not know first. 1. We are almost certainly stuck with Growatt if going 48V, 48V MPP inverter are taking $1400+, and there are no other options. If we want to go with Victron, the issue is the biggest 48V AC-DC charger we...

I left my RV at a repair shop for a week and since my Growatt is not charging the next day morning without a hard restart, my ampere time battery has run out. I noticed I can still measure an 18V voltage, so the BMS didn't cut off when it's low! are batteries screwed? also, I don't understand...

They required to purchase ten panels minimum, so I got four extra, unsure If I want to mount them 90 degrees on walls since the RV roof is full. I depend on if I can get my money back. I am open to offers. One of the panels was drilled two holes when I tried to mount them. Otherwise, they are...

No matter how big the solar array we have, still, we end up with no power on rainy days. Do you think it's acceptable behavior for someone to put their battery in luggage and charge them at their school or public library? Cellphones and laptops are definitely fine, but what about something...

So I have 4x 24V 100 AH Ampere Time batteries. I noticed that two of my batteries are at 27.2V and the other two are at 28.4V. I also saw that when on a load, the 27.2V batteries would drop their voltage to 26.8V while the other two are still at 28.2-28.4V. It seems it's only discharging from...

So I was trying to put 4 extra solar panels I got on side of my RV, but I noticed I had a rear side turning signal on the RV, would it still be legal to cover it?

What would be the possible reason - I have a 48v system and PV input showing at 92V. Whenever I disconnect PV input, or after a night, Growatt will no longer recognize solar input. Disconnect/reconnecting PV cable does not help. Also, the switch in the Growatt does not fully shut off the system...

So I am wondering how everyone wired their solar cables. Do we leave them on the roof, hidden under the solar panels? My roof is a bit recessed down and will store water. Would the MC4 connectors short circuit? Would that cause problems?

So I am a bit confused with the meaning of "grounded," information says a water heater must be plugged in a grounded outlet to ensure safety. Growatt has three interfaces, and my cord is a three-prong (I used Will's method, connected an extension cord to Growatt), but I don't get how I am...

Hi, Since I am doing a 48-12v to connect my 48v system to RV, some parts of my needs are not covered by the blueprint. I wonder if you need a bus to connect all the cables or screw everything to the battery terminal? Another issue is that a smaller device, such as led lights, may only need an...

I purchased a 3kW Stackable 48V 120VAC 80A 250VDC Off-Grid Inverter by Growatt from signaturesolar; however, they are not responding to me regarding my question on MPPT Range. This unit shows it has an MPPT range of 130VDC to 250 VDC, and my panel is at 50V open circuit with actual voltage...

Hi, I have my RV's existing system using a 12v system, so I would need to connect my 48v battery bank to provide power for 12v systems, but one of which is an RV generator, it needs maybe 300CCA to start, so it seems I need some 12v lead acid battery in between, can I use a 48v stepdown...

I found the max MC4 fuses I can find is at 30amp, but I have 2S 3P for my solar panels that are rated for maximum power current(imp) of 10.88. I measured in real-world they seem to output 6 AMPs most of the time. Is it still okay to have this setup and use a 30 AMP fuse alone with 12 AWG cables...

Has anyone heard of them? I talked with a Chinese company on Alibaba, I was looking for cheap CIGS, but they said MWT is a new technology and more affordable. They claimed MWT flexible solar panels would last for at least four years. But the solar panels from their picture look the same as the...

Have anyone used these products to reuse water from showers and washer? Would it be realistic to use RO to reuse your water, and you won't need to refill your tank for months? I feel what can go wrong is that the filter could be dead just in a few use, or the 100 psi water pump would cost...

https://www.djscompanies.com/carrier-infinity-series-ductless-up-to-42-seer-system.html https://www.minisplitwarehouse.com/product/carrier-midea-9000-btu-40-seer-ductless-mini-split-heat-pump-ac It seems there is some mini-split only uses half of the energy compared to a Mr. Cool or Pioneer. I...

Hi Folks, It turns out my RV could only fit seven panels. I am thinking about putting six panels on a 150-100A MPPT and one panel on a 100-30A MPPT, but the battery can take a maximum charging rate of 100A. Is it still OK to set up like this, and will they dynamically keep its charging rate...

Hi, I have a 28-foot 1990 RV, and I am going to put 8x 445W 72Split-Cell Silver Mono Solar Panel by Solarever on it, which is 3560w total. Each of them comes with an open VOC of 50.1 and a max VMP of 41.39. My battery is 4x Ampere Time 24V 100Ah LiFePO4 Deep Cycle Lithium Battery, Built-in...