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I found this explaination on Quora. Sounds like it may be a bad idea to attempt recharging. https://www.quora.com/Is-it-possible-to-revive-a-dead-li-ion-battery Related How do you charge a completely dead lithium ion battery? Once a lithium ion cell goes below 2 to 2.5 volts for anything...

I have a Yeasu handheld Ham radio that I bought three years ago for my wife. Shortly after getting it, we had a hurricane, put the radio on a shelf, and forgot about it. Now, three years later, I tried recharging it, but the charger doesn't do anything; apparently the lithium-ion battery is...

Good to know; I think I'm about to find out (mounting panels this week). Looks like a really nice set. I already have the Klein wire stripper and just ordered the BoughRV crimper. If it doesn't work out, I'll look into Wirefy.

Right, I have some BoughRV cables and a box of brand-less connectors; both have the same triangle markings. I also thought that "MC4" was a standard, so wasn't paying attention to brand when I bought them, thinking that everything was pretty interchangable. I just realized that when searching...

Sorry to resurect an old thread, but this is right on-topic for me. How do you identify which brand of connector you have? I have some that are marked with an underlined triangle, does that mean anything?

I checked with a friend that does generator installs. For generators, he gets a permit for every job, but says not to bother in this case (stand-alone, not connected to home, off-grid). He also offered to file on my behafe if I decided I need one.

Hmm, seems like you have prior HOA experience. I'll keep that as plan B.

Yep, sure could. But this one usually doesn't get involved unless someone complains. There's nothing in the covanents about solar, just general construction guidelines, and, the guidelines are vauge. The concensus in the neighborhood is don't-ask-don't-tell. Don't know where to look, but...

Thanks, that's what I was hoping to hear. On the permit and inspections; I have a electrician friend, maybe I'll ask him to check it out before going to the parish offices.

Maybe. I hadn't planned to apply for a permit, but now I'm considering it. The panels will be pointed south, completely out of view from anyone in my neighborhood, or the HOA (they have lots of rules), so I won't get any comments from them. However, directly behind my property is an access...

Once again, still working on my shed project. https://diysolarforum.com/threads/quick-eg4-3k-question.76643/#post-977806 This is a small, off-grid, EG-4 3K system. I plan to have roof and wall mounted panels, which I've already purchased from Santan Solar. While checking into racking, one of...

Thanks, and, yes, it's only a single battery. I'll just use the one on the battery.

I'm still working on my shed project and came across a little confusion. https://diysolarforum.com/threads/wiring-question-for-120vac-system.74764/#post-949618 EG4 provides a 125 amp breaker with the 3K inverter, and shows instructions on how to wire it. But, Will's video doesn't use it...

Thanks everyone, that's what I'll do.

Thanks, that's what I was hoping for. I wonder if there's any special labeling needed?

I'm planning to install an EG4 3kw system in a shed, similar the portable system in Will's video. It will be 120vac. I plan to have several circuits (outlets for battery charging, LED lights, maybe a small mini-split), using a small, 8 space load center. At the moment, I need 4 separate...

I'm not doing any of this, but it's an interesting thread. If I'm following it correctly, when under-voltage is detected, the monitoring relay opens and stops the pump. However, this creates an open circuit to the panel and the panel voltage increases (nowhere for the sunlight energy to go)...

Good idea, but I was trying to stay with mono/half-cut/perc, which are generally 300 watts and higher. I'll keep the smaller panels as plan-b if I can't solve it another way. I could mount a fifth panel on the south facing wall of the shed, but that's kinda lame, and, I'm not sure it would work.

I have the same question; putting panels on a shed roof and only have space for four panels. I wanted to use EG4 3000EHV-48, but it's operating range is 120VDC - 450VDC. Typical used, 300-350 watt panels are 30-35 Vmp. So, four panels (4 @ 30Vmp) barely starts the inverter. Higher watt...

Hmm, seems like it would be an even trade; 4 @ 30v or 3 @ 40v. I was hoping someone might have a way to shift the range. It seems a bit odd that a small inverter would that high of a low end. The MPP 3048LV-MK's range is 95-140 VAC, but the VOC of 160v (4 panels @ average of 40v each) would...

Right, the larger panels generally have a higher operating voltage, so would probably solve it, but I don't think they'll fit. Wish they would, I'd like to get a little more power.

I'm working on a small system for my shed; planning to use the Eg4 3000 ehv-48 inverter with an EG4 LifePower4 48V battery. I'm a little concerned about the inverters PV input voltage range, but not convinced I'm looking at it correctly. There's enough space to mount 4 panels on the south...

Hmm, I'm not sure why we're derating twice (1.25 x 1.25). Re-reading the guidelines from 'Solar Array OCP.pdf', "the NEC considers 125% of Isc as the max current (Imax)", and "the NEC requires the fuse or breaker to be a minimum of 125% of Imax". Maybe they're sizing cables for Imax (max...

I'm working on a small system for my shed; planning to use the Eg4 3000 ehv-48 inverter with an EG4 LifePower4 48V battery. The inverter comes with 6Ft 4 AWG battery cables, which are the same cables Will used on the Mobile Solar Cart video. If I'm following the sizing guides correctly, the...

I don't blame you for being skeptical, and I'd be hesitant to spend $300 on a wild guess. On the other hand, starting large motors on a high frequency inverter is a pretty common issue on this forum. I don't know how to help any further from here, but I'm guessing someone has a way to...

I assume there's a high inrush current; from what I've read, you multiply the normal running current by 3-5 to estimate the inrush. My 5 ton a/c condensing unit is rated to run at 26.3 amps and inrush (locked rotor amps) is 134 amps. So, 134/26.3=5.06. I'm guessing your washing machine and...

My area has underground power cables with the transformer 40-50 feet away. The utility doesn't supply a ground conductor, only hot/hot/neutral. Bonding is done at the generator transfer switch, just before entering the house. At night, without array producing, and more load, the flickering...

I assume we're talking about LED lighting. My understanding of the causes for LED light flickering is voltage variations, frequency changes, and incompatible dimmers. Since you have a voltage issue, I'm guessing you're thinking it's related to voltage swings. Well pumps are usually considered...

When DC power to the inverter is abundant, all is well. When power is only coming from the battery, not so well. I'm reminded of a car battery when starting the engine, the battery voltage sags a little. I would think that if a massive load was happening, it would be noticeable. Quick...

Hmm, I'm not very familiar with this inverter, but I assume the array feeds power to the battery, the inverter draws power from the battery, and that power goes to the loads. When the array is producing (and the problem is not happening), are the batteries close to full charge? Anything...

On the flickering lights issue, sounds like some of the lights might like utility power better than inverter power; I wonder if there's a sine wave or power factor issue happening. If one of the plugged in loads has a low power factor, it may be bouncing reactive power to other parts of the...

On Will's Sol-Ark review (Sol Ark 15K: Ultimate Grid-tie or Off-grid Inverter), he commented that if you wanted to be grid-tied and be assured of passing inspection anywhere in the US, then Sol Ark was the only choice. I assumed he based that on its features and certifications. Does the GSL...

Right, the 15K isn't much more. I assumed the 12K and 15K were functionally similar, just sized differently; I'll have to do a better comparison on the specs. I haven't quite figured out what the transfer switch does, so wasn't paying much attention to it.

I'm looking at the Sol-Ark 12K instead of EG4-6500's, and saw a note on the spec sheet: *IMPORTANT NOTE: SOL-ARK 12K is a combined output - (split between DC Battery and AC Loads/Grid). The max power to the grid or AC loads is 9kW - in conjunction with simultaneously charging the batteries...

Sorry, just got back from a trip. I don't have any experience using them, just what I've researched. However, I just spoke with my brother this weekend; he has a smaller unit from Micro-Air, for a 13,000 BTU device in his RV. He says it works great, lowered his inrush current and hasn't had...