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    Growatt inverter shuts off after 20 min when connected to PV

    In the interests of getting a quick solution since I'm about to enter the desert today I was thinking I can just get some replacement AGM or lead acid batteries today and hopefully that should give me a temporary fix. I don't have experience with BMS's and I had limited time to set all of this...
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    Growatt inverter shuts off after 20 min when connected to PV

    Yesterday I found that the power cuts off to the inverter even when there is no charging going on. I disconnected the panels to just run the load off the remaining charge in the batteries. This was a little after noon. It was extremely hot. The power cut out after a few minutes. I tried again...
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    Growatt inverter shuts off after 20 min when connected to PV

    Thank you for the suggestion. I have contacted Growatt and they requested a video of all of my settings. I will try to post that today.
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    Growatt inverter shuts off after 20 min when connected to PV

    I have been slow to respond just because of being in the middle of travel and trying to keep this thing alive but I will answer all the questions as soon as I can
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    Growatt inverter shuts off after 20 min when connected to PV

    Thank you so much to everyone for all of this terrific information. I'm going through it to digest it and try all the suggestions. The current status in a nutshell is that yesterday I decrease the charging rate to about 40 amps and it worked well all day long. However just about 20 minutes ago...
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    Growatt inverter shuts off after 20 min when connected to PV

    Thank you for all of that great information Harry. I do not have a BMS. I was relying on the maximum voltage setting in the Growatt and the other battery settings. I do have 2 additional backup batteries on hand for a total of 4. To get 24 volts would I set up 2 groups of a series pair and then...
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    Growatt inverter shuts off after 20 min when connected to PV

    After researching similar threads I found that a likely cause was a BMS cutting off the inverter connection due to exceeding maximum charging current. I tested this out by connecting solar input after dark and I didn't see it shutting off. So the problem seems to be related to high solar...
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    Grounding a separate breaker panel, bonding, neutral wire

    Thank you for that information.
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    Growatt inverter shuts off after 20 min when connected to PV

    I'm using the two 12 volt lithium batteries without a BMS. According to the Growatt instructions this is possible and I have set the voltage maximum to 29 volts using custom battery settings. I did balance the batteries before connecting them to the system.
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    Growatt inverter shuts off after 20 min when connected to PV

    I have 4 series strings of 5 panels each. Open circuit voltage is 23.1 for a single panel. 5 x 23.1 = 115.5v. As far as I can tell the Growatt accepts up to 145v. Specs attached.
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    Growatt inverter shuts off after 20 min when connected to PV

    Solar panel specs attached. These are a new grape solar product.
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    Growatt inverter shuts off after 20 min when connected to PV

    Thank you Bud. Typing on my phone here but will try. 3000 watt Growatt all in one model. 2000 watts of 100w monocrystalline Grape Solar panels. 4 strings of 5 panels each. These 4 strings are paralleled together. I will gather the specs and post shortly along with a video. I really appreciate it.
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    Growatt inverter shuts off after 20 min when connected to PV

    Hello, I really need some help please. I am on a cross country journey and I'm 5 days behind because my RV Growatt keeps shutting off with no warning. When connected to utility power I have no problem. When I connect the PV panel input it lasts anywhere from a few minutes to 20 minutes and then...
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    2 x 12V batteries in series causing enormous sparks

    Damage from my incorrect series connection post cleanup though.
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    2 x 12V batteries in series causing enormous sparks

    Awe man I read this too late. I wiped up the soot with a towel but the evidence still remains. I am gathering and plan on posting is shortly.
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    2 x 12V batteries in series causing enormous sparks

    Thank you sir. I REALLY appreciate it.
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    2 x 12V batteries in series causing enormous sparks

    These are Valence U-CHARGE XP U27-12XP Lithium 12V 138AH.
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    2 x 12V batteries in series causing enormous sparks

    Hello, I just received 2 used Valence 12V batteries. I top balanced them in parallel to 14.6 V. A couple days later they were down to about 13.8 V. I tested voltage again right before connecting. One was 13.87 V and the other was 13.88 V. When I connect them in series to get 24V, an enormous...
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    Can I get 240 volts from the 120 volt Growatt inverter AC output?

    Thank you. I will look into that right away.
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    Can I get 240 volts from the 120 volt Growatt inverter AC output?

    When I test each negative pole of the two against neutral, they each show 120 volts AC. However, when I use a voltmeter to test from negative to negative (line to line), I get 0 volts. The expected result is to see 240 volts. I have also measured the voltage between both negative buses on the...
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    Can I get 240 volts from the 120 volt Growatt inverter AC output?

    Hello, I have my Growatt 120 volts running to a separate dedicated breaker panel. Is there any way I can get 240 volts out of it by using a double pole breaker? I have tried this already with no success. I would appreciate any advice. Thanks.
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    Grounding a separate breaker panel, bonding, neutral wire

    Hello, I've installed a separate breaker panel dedicated for my solar output in my RV. My solar power system does not connect to the original RV breaker panel. At this time, I only want solar dedicated to running a mini-split. I've read conflicting advice about grounding. Can someone please...
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    Growatt showing 0 Amps and very low watts from PV

    Well that helps! Thanks a lot for all that detail. I suspected it was drawing low amps because my batteries were nearly full but I couldn't confirm that from the manual.
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    Growatt showing 0 Amps and very low watts from PV

    Thank you. It actually did start reporting amps when the sunlight hit directly. It is still far below what I hoped but at least alive.
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    Growatt showing 0 Amps and very low watts from PV

    Hello, I just installed a 1,000 watt array with 2 series strings of 500 W each paralleled together. The panels are brand new (just released 100 W mono from Grape Solar). I have attached this array to a brand new Growatt 3000TL SPF LVM. The array voltage looks normal. However, the Growatt is...
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    YES: RV Solar/ Li/ and AC running full time

    Thank you for that detailed information. I am checking out those curtains.
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    YES: RV Solar/ Li/ and AC running full time

    Thank you. I guess I misjudged big time. I have to scramble for a solution now.
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    YES: RV Solar/ Li/ and AC running full time

    Thanks a lot. I really appreciate that information.
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    YES: RV Solar/ Li/ and AC running full time

    Can anybody tell me if a 9,000 BTU mini-split would be enough to cool a 35 ft motorhome in the heat of the desert? I've already got it half installed and I have to hit the road in 3 weeks. After watching this video and reading this discussion, I'm starting to doubt my choice. Is it necessary for...
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    Bond neutral and ground in a separated solar breaker panel ?

    Hello, I am installing a totally separate (isolated) solar power system in my RV that will not connect to the existing power system. For this year, I want it only to run a mini-split. I do not want to mess with the existing RV breaker panel for now. I have a separate Square-D Homeline breaker...
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    Inline fuses: conventional or diodes?

    Thanks for your response. Even though they are different, would the diode still offer the same protection in the end? This is what is suggested on the Rich Solar website where it says about their diode "Prevent large currents from damaging the solar panels."
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    Inline fuses: conventional or diodes?

    Hello, I am in the processing of purchasing 5 x 15A fuses of the fuse holder type. I have come across two types: A) What looks like a typical fuse. B) Diodes. On the outside, they appear the same. However, the diode based ones are much cheaper. Are these equivalent? Here is the...
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    3000 Watt Inverter Fuse

    Thank you for pointing that out and thank you for sharing this information. I have the same setup as the original post. 12 volts.
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