Search results

I'm currently putting together my 48V system for a remote property, which is a seplos DIY battery kit and an EG4 3000 AIO. I am planning on running starlink and a few network devices off DC, and would like to be able to completely power off the EG4 inverter after it stops charging via solar at...

Hey everyone, I'm trying to figure out the best way to monitor (and to a lesser extent, manage) an EG4 3000 and the Seplos 3.0 BMS. I'm a bit new to 48v, so bear with me. I set up solar assistant, and am awaiting the proper cables to connect it to both the battery and the EG4. I just have a...

Hi, I was hoping someone could provide some input on selecting a 48V all in one. I have an off-grid property currently running on 12V, and just finished building a 48V seplos battery. My power needs are minimal, but capacity is a big deal as I don't have a lot of PV. I need to run my camper...

I just assembled a Seplos case with 16 EVE cells that have been sitting on my office floor for over a year. I did top balance them a few months ago, or at least I thought I did. Once I assembled the pack the BMS is reporting cell voltages ranging from 3.356 to 3.475. There appears to only be...

I ordered the Seplos v3 kit from Docan Amy a while back, been sitting for a few months. Started to organize things to get ready, and noticed there are no temp sensors in the box. Then I realized even the non-heated version (which I assume they just throw in the two heating pads) should have...

Brand new, never installed. $140 Shipped. https://overkillsolar.com/product/bms-100a-16s-lifepo4-24/

I had an issue where a battery terminal was destroyed on a small invertor. I was curious if anyone knew where I might be able to get a replacement terminal like this? The manufacturer did not have one, but sent a whole new inverter, which was great. I'd like to salvage this one if possible...

Had a wire failure (or possibly rodent issue) that resulted in that damaged the negative terminal on my Giandel inverter. The inverter is fine, but when I tried to remove the nut it broke the stud. Any idea where I can get a replacement? I can remove it entirely and rewire it, but would...

I purchased these 304AH Eve cells from Amy Zheng in 2021, but never got around to building a battery. Now that I am close to having a shed build to store them at my camp, I had a few questions I anyone had a moment. My plan is seat the cells on a piece of plywood, separate them with a strip...

Apologies if this has been posted before. The facebook group "Starlink Hacks" has been posting some neat stuff lately about removing the AC POE injector in favor of a pure DC solution. Someone even created this neat little guy: https://dishypowa.com/ It would be cool if you could get a 12V...

A friend of mine just received some quotes for 18 390W panels with enphase microinverters. $17K installed after all of the tax credits. He felt it was very expensive (WI), but when you add in racking, cabling, permits, labor, etc, it did not seem super crazy to me. I've not engaged a solar...

I fried my MPP 1012 this weekend at my camper and am now looking to replace with separate components. This will have the advantage of getting an inverter with a much higher output for the coffee machine and microwave. Have been looking at Victron for mppt and Giandel 2200W for inverter. Then...

Went up to our land this weekend and was hoping the single 175W panel would have kept my new SOK battery charged. At first it appeared dead so I tried to jump it with another 12V AGM battery. In my haste I shorted it it with the jumper cables. Thankfully the battery was not dead, it was...

I am considering putting in a grid-tie system in my house, and would like to do as much work as possible. My wife will not let me on the roof, so that is out. The local muni also is CRAZY strict (can't even call to ask them questions if not a lic. electrician), so I will need to work with a...

I am trying to find a split phase (or 240V+transformer) off-grid inverter in the 5-6KW range, that accepts a 120V AC input for charging. Preferably that can accept > 250VDC of solar. So far, no luck. The MPP LVX6048 and Growatt 5000 from MPP requires 240V input. The Growatt 6K split phase...

I was trying to determine if I can get away with a non-UL listed AIO unit for an off-grid property in Michigan, and was reading through the NEC, when I found this: 710.15(C) Single 120-Volt Supply. Stand-alone systems shall be permitted to supply 120 volts to single-phase, 3-wire, 120/240-volt...

Why would I consider a 240V single phase hybrid inverter + midpoint transformer, vs a true split phase inverter (or two single phase 120V inverters). Just cost, or?

With all the chatter about terminal stress and bus bars I am considering just taking the time to make my own copper wire with lugs to connect the batteries. I kind of find cable making satisfying :) I am also building this battery for cold climate, and it popped in my head to use the nice foam...

I'm going to be adding two bedrooms and a bathroom to a pole shed I have on a remote property, and am looking to install a 3 zone mini split (27000BTU/22 Seer). I am considering getting the 3K growatt unit (120V). By my calculation mini split could draw 1227W (27000/22). The only other loads...

I ordered 16 304AH cells from Amy Zheng. I had already purchased the 48V Overkill 16S BMS. I had a couple of questions if anyone would have the time to comment: 1.) How do I size a class t fuse? Is 200A sufficient? 2.) What is the best place to put a fuse? 3.) Is putting some sort of smart...

So, I'm planning on building my own ground solar racking, as I am fairly handy and a cheapskate. I also really want to be able to adjust the tilt during the winter (Upper Peninsula of MI). I was thinking of doing something where I would bury a single row of 4x6 posts every 6-8 feet or so or ...

I have some recreational land up north, and built a pole shed. I have no grid power, and am looking to put about 4K of solar in with the goal of powering a small camper, starlink, and a fullsize fridge. The bi-facials are in my budget, and seem to be a great solution for ground mount in snowy...

I was originally going to build a 48V pack with the Lishen 272 cells via the group buy, but that all fell through Now I just assume any alibaba/express order has more than a 50% chance of disappointing me, so I am looking at turnkey solutions. My issue is that I am putting solar on some...

As I wait for 16 cells to arrive, I have been day dreaming about how I will build this battery. I like how @Off-Grid-Garage did it, and plan to take a similar approach. I plan on getting a heat pen, and custom fitting the enclosure with 1 or 2" of foam, as this battery will experience harsh...

I have ordered 16 of the 270AH cells from Michael's group buy, and want to spend some time over the next few months planning things out. I plan on building a 48V battery, to be housed in a pole barn in the U.P. of Michigan. The pole building is unheated, so it can get VERY cold. I plan on...

Hi everyone, boy this site is like drinking from a firehose. I love it. DIY solar checks all of the boxes of things that I love: Saving money (longterm), DIY, self-sufficiency , etc. I have a ton of thoughts rolling around, and was wondering if someone might spare a minute or two to ensure...

Hello everyone, My wife and I are building an off-grid home in the U.P, of Michigan, and the way things are looking, it appears that the solar array would need to be roughly 700feet from the house. I am going with the assumption that putting the batteries and such near the array and running AC...

I purchased the 12V 1K MPP Solar unit for my camper, and am having trouble determining fuse/breaker sizing and placement. I will have 160W of panels and a 100AH AGM battery. My understanding is that I need about a 125A fuse on the positive of the battery, but the manual also mentions that the...

Hello everyone, I was wondering what the prevailing opinion is on going with an MPP Solar Unit vs separate MPTT charge controller/inverter/transfer switch etc. I just bought a small travel trailer, and am looking to put 200W of solar panels on the roof. Going to stick with the single FLA deep...