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Pull the balance wire connector out of the BMS and plug it back in. On my Overkill Solar/JBD BMS that does a reset. While the battery should still be able to be discharged at such low temperatures, charging should not be done until the batteries are above 0°C. In your case, I would give them...

I'm disappointed to see the vendor threads deleted. They were very useful for new forum members looking for a trusted vendor.

I use both hex and square ferrule crimpers. I've had no issues with ferrules getting stuck in terminals. I had to replace a couple double pole breakers a month ago and the square crimp ferrules came out just fine and they looked great. That said, I'm with Tim that I would prefer a lug over a...

I want to apologize to everyone for the bad puns. ~Noah Fence

These are the "square" crimps I got out of my 10 and 6 gauge ferrules/wires using that die. For the terminals I put them in (shown in the background of the picture) they were perfect.

One more picture. :) I use the Z brackets to keep my PV wires in place using weather resistant zip ties.

A proper connection requires some clamping force. If the bar stock is just laying on the terminal, that's not a good connection.

Nowhere in the manual or the datasheet for my Victron Multiplus 12/3000 can I find an elevation limitation. There is no reference to elevation or altitude at all. The Multiplus II GX has a maximum operating altitude of 2000m. I often run my Multiplus at 9000' elevation. Below is a link for...

Manufacturers that sell their product direct and also use distributors usually don't discount the price when selling direct. If they did discount, it would piss off the distributors and their distributors would dry up. It doesn't always work like that, it depends on the distribution chain.

The best fuse for the battery cables is a Class T fuse. The MRBF isn't bad. The AIC rating is higher for the Class T fuse. If you think MRBF is expensive, wait until you price a quality Class T fuse.

Don't judge a BMS by it's cover. Look in this subforum for issues with the Daly BMS. Then look for issues with the JBD 4s 120 amp. There are a few, but far fewer than you'll see with the Daly.

I would put a new lug on the end of the BMS lead. Drilling out a lug can be challenging. If you really want to go that route, be sure to secure the lug to something so that when the drill bit grabs it, it doesn't start wrapping the BMS lead around the drill bit.

Don't trust acupuncturists.

Working good. It was about 22° F outside when I went down to the storage lot today to refill the rodent lunch box. I snapped this picture of the two thermostats. The red readout is the currently observed temperature as seen at the top of the battery. The blue readout is the max temp. The...

I don't have a problem with this. Most postal trucks have a defined route and a home base. Lower maintenance, lower cost to fuel it, what's not to like? Of course, we're talking the government so they'll come up with any number of ways to screw it up.

Why do turkeys only act in R rated movies?

From the article: It has never once occurred to me to walk on my panels. That's just crazy.

My perspective is an RV travel trailer. A nice enclosed case is simply something I don't have room for. Leaving my cells (in a compression fixture) exposed reduces the amount of space I need to deploy them in.

If the inverter does not support a hard wired connection, I would not use it power outlets.

Not quite clickbait with the title, but it's an interesting issue that I ran into with an "Operator Error" solution. I have a Victron SmartSolar 100/20-48 MPPT and two Victron 100/50 SmartSolar 100/50 MPPT. All three were networked using my BMV-712. The two 100/50 were wired into the Cerbo...

My cells were shipped with FedEx this time last year. They came through looking great. The conspiracy nut in me wonders if the folks in China are shipping lousy cells sold as Grade A, hoping they'll get destroyed on the way so they can claim the insurance on them.

Are these 12 volt batteries that you already have? If you need a 48 volt battery, then build a 48 volt battery. Don't string together 12 volt batteries. This applies mainly to BMS batteries, like Tim said above.

My opinion is that leaving a gap between the cells is counterproductive. If the manufacturers are recommending compression for increased longevity, you're not really clamping them if you leave space between the cells.

I followed the Top Balance guide. LiFePO4 batteries have been in great shape for the last two years.

1/4" threaded rod is readily available at most hardware stores. That's what I'm using. For those in the U.S., 10' lengths of threaded rod are available in the electrical aisle at Home Depot. It's less expensive than buying the threaded in the hardware aisle.

For a first system, I would go for the new cells. I wouldn't want someone new to LiFePO4 to have to struggle with questionable cells. You wouldn't know if a problem is with the cells or with something you did.

If the administration was serious about this, they would declare it an act of terrorism and put out a kill order on the hackers.

I talked with one of the companies that makes the RV pads, but not the one in your link. They warned me to not use those on a battery. They're configured to be installed against a plastic tank with water in it, not against a metal or plastic battery with dense material inside it. The...

When I bought/ordered my cells last year (around June 2020), there was a large disparity between DIY and off-the-shelf. My 560Ah of DIY cost me $1100 (eight 280Ah cells plus two 120 amp 4s BMS). A similar Ah battery bank from Battleborn would have been almost $5,000. I think I made the right...