Most reacted posts

I ordered 32 EVE MB31 cells with two BMS from Wistek for just under $3000. The salesperson said the order would arrive at my door in about 30 days. That was accurate. The cells all tested at 3.27 volts - no variation. So far everything is copacetic. I got two battery boxes from another...

Still no stories of county interventions. I advised my friend to visit the county building dept. and ask about permitting. After visiting, he and his wife have 90% decided to submit for a permit. We are in a very rural county with four building inspectors who visit three to four sites a day...

I'm about ready to begin building a ground mount that has a 20 degree slope heading east and up. Morning sun doesn't crest the hill for a little more than an hour after official sunrise. I'm wondering if it would make sense to shift the angle from true south to a couple degrees, or even 10...

The 300 ah battery with BMS, etc is This includes shipping to my door.

I got a couple battery boxes - https://www.alibaba.com/product-detail/XR08-48V280AH-15KW-Solar-Home-Energy_1601211493083.html - and realized my physical situation is better suited for something that's tall up against the wall. I'm wondering if the EVE MB31 cells would mind being on their sides...

I got an AC200P for free from someone on craigslist who had had enough dealing with Bluetti. She didn't give me details about her experience, but she was pretty disgusted with them. I contacted the company and the short version is they said it would cost $357 for them to fix it. I asked if...

That certification seems to h ave been paid for. Here's the link. https://eg4electronics.com/categories/inverters/eg4-12000xp/

I've been talking over whatsapp with "Mia" from Wis-tek. She quoted $2665.92 for 32 EVE MB31 cells. This is the best price I've run across. Again, has anyone done business with this company?

I haven't gotten that far. Once the BMS works I'll deal with that.

With great frustration a friend gave me an AC200P. The unit starts, the screen initializes, then beeping starts. The fault screen lights up. On screen 5 is the problem, fault #42, BMS over voltage, and fault #43, BMS low voltage. The unit stays on for maybe 15 seconds and then shuts down...

I've looked at videos saying both approaches work to charge a Goal Zero 1500x using the alternator. The camper has a 190 watt solar panel, but I want the addition of alternator charging. The GZ has an upper charging limit of 50 volts, 50 amps, and 600 watts. It looks like the advantage of...

Someone from another forum just posted this. ________________________________________ if this works, you are effectively. proving the yeti link in vehicle mode is pointless. From what I see online, a minimum of 15v input is necessary to the MPPT controller of the Yeti. I'm not sure...

I'm not schooled enough to address your well-made points. I think I'll test the system to see if it works. The worst case scenario, which isn't bad actually, is just to put one wire to the GZ and one wire to the new battery from the output terminal on the Renogy with switches on both lines...

Nope. The thing stays on for only 15 seconds and I haven't found a way to view individual cell voltages...

the harnesses were reversed - TOTAL USER ERROR. I love learning, and making a fool of myself in public...

Thanks. I found this guy's video and was hoping there was a "magical" fix before starting the teardown process. I bet when I write Bluetti they'll tell me to send the unit in for repair.

I started with two 100 amp batteries, moved to one 300 amp battery, and the DCC50S worked fine. I did notice the heat on the unit was pushing 150 degrees fahrenheit when charging by alternator and put a fan on the unit when charging by alternator. I've got another 300 amp battery and am...

Here's the order sheet. The promise is 30 days...

I'm just starting the process of order EVE MB31 cells and BMS. I'll follow up

So no one knows anything about stacking cells on their sides eight high?

I certainly don't intend to use the output ports on the GZ to do anything other than to run accessories. Charging using the alternator to renogy mppt uses a 4 AWG cable and can be up to 50 amps. The cigarette plug is not used. Using the REnogy MPPT has been demonstrated to work charging a...

BATTERY DETAILS Cell chemistry: Li-ion NMC Pack capacity: 1516Wh (10.8V, 140.4Ah) Single Cell Equivalent Capacity: 421Ah @ 3.6V Pack Lithium Content: 126g Lifecycles: 500 Cycles to 80% capacity (Discharge rate: 1C, Full charge/discharge, Temp: 25C) Shelf-life: Charge every...

Missed that...

I put out a Request for Quote on Ali Baba to see what came up. This is the first response. It is about the same price as I got from Wistek, which no one here said they've dealt with. Just reaching out for your experiences... Jeff... Dear Jeffrey, Thanks for your quick reply. Ship to...

upstream battery details

I built two 48v, 314 ah batteries. The boxes did not include internal circuit breakers. The batteries go into a EG4 6000XP, which has an internal breaker. I'm adding Blue Sea 5191 fuses to each of the battery terminals. I also have a 200 amp t class fuse to the hot side of the cable between...

I've considered that, and may do it. The camper is new and I'm going to give the GZ a chance. I'll test drive the scotched together system first...

It's all working. My tail is all aquiver!!! Thanks for all the help... This forum is great!!

Can I connect a 100ah LiFePo4 battery to the Goal Zero Yeti 1500x in parallel without needing anything but a fuse/cb between the two? I'm looking to double my battery capacity without getting rid of the GZ that came with my Scout camper. The GZ can handle 680 watts or 12 v and 50 amps input. I...

A friend wants to put his 100 amp manufactured home on an off-grid solar system. If he does not get a permit, and is caught by either the county or PG&E what are the potential consequences? He's planning on a EG4 12000xp, a couple EG4 15 kWh batteries and 12,000 watts of panels. He'll build...

I unplugged the balance harness from the BMS. I measured the voltage for cell #9 between the cell negative and BMS side of the harness pin c9+. It was 3.42 I did the same in reverse for C9- on the harness, and the positive pole on Cell #9. 3.42 volts. I had a second BMS and switched out...

That's a good idea. That may end up being the best solution!!!

I'll try the above. Will report back...

What got me was the way the rails were arranged in the box I got. In my ignorance, rather than checking the embossed numbers on the BMS and box rail, I just hooked up the harness right rail to right BMS slots, etc. It never occurred to me that the way the rails were arranged in the box would...

There is an excellent video that demonstrates how the Renogy unit can connect two LiFePo4 batteries, or an AGM for that matter. What I want to do is put the GZ downstream of the new camper battery. I'm hoping that by plugging the new LiFePO4 battery into the GZ high input port (12-50 volt...

Yes, for a couple hours. The only info I've found suggested using car chargers which are limited to 120 watts input. The GZ is capable of 600 watts, or 50 amps at 12 volts of input. Here's a graphic of what I'd like to do (without the solar panels for now). Do I need something to control...

I built a couple 48v/314ah batteries using boxes where the long side is parallel to the ground. They would fit better in my space if I rotated them 90 degrees to sit on the small side. Any reason anyone can suggest why I shouldn't do this?

I ran searches for Wistek and nothing came up. Does anyone have experience with this Chinese company? They sell https://wis-tek.com/products/wistek-lifepo4-battery-pack-48v-300ah-15kwh-solar-battery and https://wis-tek.com/products/wistek-ev-m30?variant=48343316758806 Both include...

Shipping is included in the price. That's why I'm asking if the company is legitimate - do they use grade A EVE cells and a decent BMS, software, etc.

I hooked up my 16s battery today and one of the lines is not reporting cell voltage. I get an error message saying cell count is not equal to settings. The cell itself reads 3.58 volts, so the cell is good. Anyone have an idea what is going on with the BMS?