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I'm working on another battery project. I had acquired for cheap 8x 12s BMW batteries, I think they came from an I3? Anyway I need 14s packs to match my other BMW Batteries ( 14s system ) I've decided to disassemble 1 pack to gain 6x 2s packs, then add them to the 12s packs I have, then i'd have...

Has anyone here ever re-purposed any UPS's for use as an Inverter ? I acquired long time ago a new, never used APC 1400 rack mount 24v. it's good for 950W I like that it can be cold started with out any AC input. I'm using it in one of my small solar projects. I'm using 3 of the 295 watt panels...

I have BMW Batteries that use the NMC cells. I'm on the fence about Min / Max voltage settings I'm using these batteries in a 14s setup for a 48v system I found out my Solar charge controller isn't as user friendly as i thought. ( Epever AN6415 ) I know i'll need to use the USER settings...

Does anyone know of an inverter that has input voltage selection ? like 12v up to 48v selection? I'm looking for such an animal for using to load test batteries for capacity, as they maintain constant during discharge. Other devices ( dummy loads or such) current drops as voltage drops. and...

I have several of the BMW 3s,4s,5s Batteries. I nearly have my power wall finished. I'm Searching for the BMW power cables used on the big 90ah batteries that were sold on BHU, I'm sure the question was asked here before, but i can't find where. Anyone have spares they'd be willing to part...

hi all, Ok, I have looked at some of the other Automatic transfer switch related threads on here, But i couldn't find the answer i was looking for. I am looking a synchronized ( zero crossing transfer switch ) Transfer sw. that is inverter prioritized. Looking for something that will switch...

I'm trying to use this SCC in USER mode, I have tried everything i can, but i cannot get any of the parameters to change. I changed the setting from Automatic to 48v, I can change the numbers, but every time i wanna save it says "PARA ERROR" No matter which parameter i goto i cannot change it...

I have some large BMW batteries They range in 3s, 4s, and 5s packs, i have them configured so that i have 14s groups. i can make up to 6 strings, but for now i will start off with 2 and see how much more I can add in the future. But for now I am searching for a good BMS, one with active top...

I have an APC UPS1400 ( 1400VA / 950W ) I been using this in a small solar set up for a while in constant battery mode. been doing great for over a year now. But the other day i noticed the fan has died. But it's not the fan,. the circuit that controls the fan is my issue. I have tried to bug it...

I have some SCC that i have been using for solar lights. The time is coming that my SLA batteries are aging out, and I wanna replace with lithium, But i have to replace the SCC's. Trying to find something that can be true MPPT 10A or less. most of my solar lights have 35Ah battery and smaller...

Hi all, I have one of these AIMS LCD remote displays. (REMOTELF) There's a button to the left of the display, turns the display off to save power.. But, How to i change it back to where the display stays on ? I've tried pressing it for a second, 2 seconds, double tapping..etc, I can't find any...

I have more solar than i do batteries now, 5.2kw of solar. I want to add more batteries, i have 6 strings of 75Ah 14s BMW batteries. I'm looking for suggestions or deals on cells or packs to buy, Ideally i'm looking for something 75Ah or more,, 180A or higher would be great ..

I have a chance to get some nice new unused left over panels from a project that a contractor has. these are 295W panels. new, never used. I am curious on now good these panels are.

Anyone ever modify BMS's I have acquired 8 12s BMS's They are RJXZS Brand. I am hoping they can be modified. The circuit board actually says 15s, but some of the battery leads have been jumpered to make it 12s. I'm wondering if i could just unsolder the jumpers.. All the circuitry looks to be...

Does anyone know what the minimum input (panel size) is for this CC to operate ? I'm Starting to think I might have a bad solar panel or it's too small. It is a small 12v 1/2amp panel. The panel measures about 17VOC But goes down to about the voltage of the battery when connected to the CC. The...

Can someone advise me if my cipherin` is correct... I have a EPEVER 6415AN I plan to have a 48V system. I have 295W canadian solar panels ( CS6K-295MS ) I know the charge controller can handle 3Kw. I think i can have a total of 8 panels. 4sp2 config. ( about 129VDC input @ about 2360w/max )...

I have the AIMES 2Kw 48v inverter charger. it works fine, but I'm curious as to why it won't start my washing machine.. the unit claims it'll surge 6kw for 30 seconds. surge start on my washer has been calculated to be about 4.3kw for a split second when plugged into the wall. From my...

I just Acquired a nice large solar panel it is 295W, the panel is about as large as a sliding glass door.. Model# JC295M-24/Abh ser - 05174514081812802 I can't see a date code. This Panel was given to me, It is damaged, Burned spots. Is there any help for a panel like this ? What could have...

I got me a large BMW battery pack from Batteryhookup.com recently (https://batteryhookup.com/products/complete-bmw-32kwh-ev-active-e-battery-96s) I already have my Inverter / charger and solar charger ( 48V system ) I just need to figure out how I'll balance the cells. This module came with all...

I have a 24v system 2P2S 4x 100AH SLA batteries, About 3 yrs old. I was routine checking things, and I noticed 1st that solar kw for the day was getting higher than usual. I then checked my batteries, and I noticed that 1 pair was hot ( over 100F ) I checked voltages and they were normal, about...

Hi, I have another question of my charge controller.. https://www.ebay.com/itm/363022568161 The unit is good for 150VDC max. input and I am on 24VDC system. I know this is a lot of conversion power. My input voltage is about 120VDC 855W The unit gets quite hot,, enough that i needed to add in...

I been looking for a tester to confirm that I wired up BMS correctly before actually plugging it into BMS. I been using a 8S tester, but it's a little janky to use on a 14s connector. I had to keep sliding it over and over. So I decided to find something better and i came across this item I saw...

I have 1 Epever running for a while, had programmed it with the Solar Station for PC Now i have a 2nd one I'm ready to commission. They are both AN6415. Problem is.. I thought i'd be smart and Export the settings from the 1st one, and "save as.." Well, I linked up to the 2nd unit, and tried to...

Why me... I got things straightened out with 1 issue from a new unit. But this morning i noticed that my older unit that has been working great for over a year, the MT50 only displayed CONNECTING...... this morning.. I unplugged the MT50 and no change, so i swapped the displays from the new...

Customer brought me one of these Duracell powerblocks. The inverter part is dead, everything else works ok. Is there a fuse in the Inverter? I do see a 200A fuse for the external battery, but i don't see one for the Inverter. Anyone work with one of these yet ? I'd hate to take it all apart...

I have a friend that wants me to check out an issue he's having with an IG series inverter. It's periodically displaying a state code of 240 ( arc detected )and at times blowing / tripping fuse/breaker . I'd like to do a little homework before i travel so far to check it out. Where is this arc...

Ok, 1st of all , I am quite educated about electrical and electronics. I've decided to build me a Power wall, since i am not allowed to grid tie my solar, due to the power co. here does not support solar, (municipality) Anyway, i have about 2Kw of solar on my house that i wast to repurpose. I...

I have 2 Epever charge controllers. 48v system. Things have been doing good for several months but now I'm having a OVP issue. I checked thru settings and measured voltages etc. and I cannot figure out what the deal is. Can someone take a look at my settings and tell me if anything should be...

I have a few JBD-SP15S020 BMS's They came with batteries i bought,. But no instructions. These BMS's are actually 15s BMS's But wired for 12s. From some place called RJXZS BMS. I discovered they were 15s by opening the cover. There is spaces open for more balance leads. but not present. And...

I have Wiser3 charge controller that's been doing really well for me. It has a com port. Supposed to be RS485. There isn't any instructions on how to connect. I'm using a usb to RS485 adapter to connect to the RJ45 plug. As far as i can tell, ( had to open the unit) 5,6 are tied together and...