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Last year I bought the new and improved, black-shelled Giandel 2200w with 3 year warranty. This year, a few months back, it died. Giandel sent me a replacement, good to their word. But the bearings in the replacement's fans are already grinding louder than a coffee grinder after a few months...

Tracking and confirmation received early morning last night. Replacement to be shipped by Amazon, arriving on the 12th of May. Looks like Giandel passes the sniff test!

12v

I used USE but couldn't get it above 21v Until a hard reset...then USE got me to the manual's listed max of 24v

Thanks all: culprit was bad cables. Replaced until I found the one with copper literally falling outbof the lug hole.

Victory! The secret was to cut down the insulation further so I could stuff more naked copper into the Midnite Solar combiner. Thank you everyone. As usual it was a simple solution. Seems to be a common thread here :)

Weird but yes: as soon as the battery was just a touch below full again, the readings equalized...ish.

If you have or were considering a Giandel Inverter, I thought I'd share how interacting with them was going. I took a video of the faulty inverter wired into my setup. I showed the sound the 2200W unit made when I turned it on, and the following audible alarm and 'OL' message. They asked me to...

My 24v bank is sitting at 27.4v (working out Equalization) so I'm not worried now...but I'll switch to mains when I'm going to be away overnight or longer to avoid creating expensive battery-sized doorstops

No joy. Can change setting with inverter on or off but only to the 21v [EDIT: 24V achieved after factory reset] max for LC cutoff. [Still] Madness!

It's not milk-crate portable but it"s close! My fourth solar rig, built to be very portable, in a bulb crate: -100a lifepo4 -2200w inverter -USB fast charger -many zip ties :) ...now please, don't ever let me drop it :) I'm sticking with an ANL 150 fuse paired with a 100a bms... For now.

Another d'oh moment :) Will do. Thx for being an educated and patient sounding board :)

Oh fer Pete's sake. Sigh, yeah, I see what I did there. Cheers Rich,

Thanks Bob. You've reassured me I've done nothing wrong (except trust manufacturers defaults). Still! You'd think a renogy mppt and a renogy battery would integrate easier than this! Thanks again all. Now I wait and see how the battery takes charging with no load for a day or two.

Yes a 12v ecoworthy w/ 100a BMS. I have a 2200w inverter wired in but have capped usage at sub 1000w for that reason. Bulb crates are cheap and plentiful, mine was $5 used and rated at at least 60lbs

I'm going to try to strip some more insulation off and see if I just haven't gotten enough in for a tight mechanical connection.

Will give it another college try thx Bob :)

Lol yip got that now. And the precipitous drop under load that disappears without a load is not actually hurting my battery? Just reminding me to install a monitor? :)

No, you're right: the arrays each generate 17.5 so together about 35A...the MPPT's are 30A and 40A respectively. I am a baby at solar. Just barely a year in. It's daunting but fun, huh? :)

I'll move the washers and sand the metal as suggested and get back to you. Thanks for the feedback, all!

Well under 3000w and thebgauge calculators recommended 1 awg for that power at runs of 6 ft (and my longest is under 3). Did I miss anything?

Maybe... Here's the chart I was going off of. Batteries according to multi with solar disco'd and inverter off is 12.7v now but MPPT reads 79%?

So what was your working solution? After a factory reset I was able to set it to 24v but for AGM that's still 25% charge...way below recommended 'never ever below 50'.

The fuse bnetween battery and inverter is where the whires heat up. What size fuse should I be using bewtween them? Or should I replace the 2 wire with 1?

Thanks for those calculations. I am learning so much it makes my head swim :) I am going to spend a little of my discretionary solar budget to upgrade all cables to 4/0 before I ask for more help. I believed many of the posters are right: my system's good enough but not to exacting spec...

Has anyone come across this before? My renogy rover li 40a charged my renogy smart lithium 170ah batts to 13.3. I've been waiting to see this because I've been stuck at 13.2 for a couple days and sonput no load on it to see how long it would take. At the end of a couple days waiting, still...

Sorry to jump in Hoss, but I'm confused about MMMF branch connectors, too. If I run 3 5.5a 100a 12v panels, will the three panels still send 5.5a through the branch connector, or 16.5? I'm guessing 16.5? Renogy says " The benefit of series is that it is easy to transfer over long distances...

Will try, thanks

Just to be sure I hacked together a diagram connecting the 12v 180w panels into 3 series of 4 panels. I've psyched myself out between 3s4p and 4s3p! Is this correct? And is it suitable for a 24v growatt?

Thanks for an amazing description!