A123 Lithium NMC Batteries for $10/kWh!

[@LithiumSolar]

Wow, I'm glad I caught this video before I started tearing one apart. I bought 3 of them from the same deal. I've only opened one box so far but it was the ribbon-style cable. Those boards are definitely BMS and they're pretty nice boards too. They appear high quality and even have a nice thick conformal coating. I'm thinking those plugs he sent are so the modules can all communicate with each other? Just my guess...

[@emiliancucean7747]

Hello, can you tell mee the name of the deler for this batteries?

[@gossumx]

@@emiliancucean7747 pretty late. I know some people were purchasing them from batteryhookup I just checked and I don’t see them on here anymore. But they’ve sold them more than once.

[@teal3496]

these batteries supposedly have built in balancing boards called "Module Balance boards" or MBB accoring to a123 systems website and have CAN communication functionality? unsure if the balance board works without being connected to a car or not

[@yankey4]

So cool brother. Happy for you. Will be fun to see what you do with them. God Bless

[@mrkeopele]

wow, yes, i got some too and am so very happy with their performance!

[@DavidPozEnergy]

Thanks for sharing

[@_a1001]

That's awesome you scored these. I bought a few dozen of these when they were accidentally listed as LiFePO4, and some of the battery stickers even were the same as the LiFePO4 58.8ah batteries, but found out they were all the NMC ones after doing capacity tests. Battery Hookup just listed another batch of these NMCs, which is very tempting

[@Buzz-Of-Craze]

NMC always be a villain, lol

[@johnle231]

What you use batteries for

[@mrkeopele]

are most A123 packs that look like this NMC?

[@brianswenson2686]

The plugs in the envelope is the CAN connector. The lines are just for communication between the battery BMS and the pack BMS. The battery BMS measures cell voltages and can do balancing but is a bit of work to get it talking. There is a project on GitHub to talk to the BMS.

[@benssolarandbattery]

I'm not much of a programmer, so I'll probably just remove them and add my own BMS. Thanks!

[@MrPhatties]

Is it the same logic for the bae cells and their on-battery bms?

[@fisherus]

Fantastic batteries and all gone, before I could order any. Would have been perfect to use for my well pump stations on my ranch. I put a 6' diameter, 6' long piece of corrugated pipe upright in the ground with a concrete floor and insulated cover over the top to keep batteries above freezing temperatures. Hopefully, they'll be able to get some more. I'll be anxiously waiting for your next video.

[@benssolarandbattery]

These batteries sold out in 3 minutes. I just happened to see Tom's post at the right time and ordered as many as I could! Sounds like a great way to keep them warm. I've used a seedling starter mat with good results as well.

[@remog38]

Hi Ben enjoyed all your content saw you first on DavidPoz , have been watching since, a real shame no Battery Hook Up or similar here in UK thanks

[@vincei4252]

Because these came from a military vehicle I'm guessing the second battery you looked at with the more robust connector is a later rev. The first one you looked at with the FFC cable/connector can't possibly be as durable.

[@lnxpro]

Those BMSes are Battery monitoring systems. not battery management systems. so they communicate with a bigger BMS that can actually cut off the power as needed. These individual ones just communicate with the entire battery pack bms so those leads coming out of each individual pack only monitor things and possibly balance things as seen on those 7 rows of resistors. Most likely they communicate over canbus with additional sensor data or possible and entire proprietary communication protocol. Wouldn't hurt to leave them connected for testing purposes as you charge and discharge a pack or two and see if anything gets hot while charging to 4.23v per cell then that would indicate it's balancing. You would still want a BMS that can handle OVP and UVP by disconnecting the pack.

[@benssolarandbattery]

Thanks for the clarification. I'll probably pull them at this point, as I really have no way of verifying what they're doing. I am getting a separate Daly BMS for each unit, which will be paralleled in a load center with breakers.

[@panospapadimitriou3498]

my spare Jk inverter bms yeap when no updated it turned to nmc chemistry no mater what... would love 2 packs of em for my off grif

[@jacobhendrickson8935]

Are these as durable/reliable as the lifepo4 cells are??

[@benssolarandbattery]

They do seem to be built very well. I've been using a couple of them for over a year now without any issues. They are NMC, so more flammable if you do bad things to them.

[@mrkeopele]

i just got some A123 NEC 12v120ah packs i think from a larger automobile pack, mine don't have the BMS but from looking and reading it seems these are highly reliable for industrial use long term, i feel after having ebikes with the cylinder cells that these are going to be more reliable than what I have had so far.. i have 2 ebike cylinder cell packs less than 6 months old that came out of balance and the BMS shut it down, so, hoping these pouch cell construction lives up to it's designs.

[@CagayanIloiloandBeyond]

Could you tell how to determine whether it's a NMC or LFP? Part no didn't yield me anything on mine.

[@benssolarandbattery]

In this case, Battery Hookup figured it out the day my batteries got delivered. If I were to capacity test them at different voltages, it would become clear. Lifepo4 do not like being charged above 3.6v per cell and will start to heat up.

[@benssolarandbattery]

Also the nominal voltage of 25.6v divided by 7 cells in series equals 3.65v per cell which is a dead giveaway as Lifepo4 typically have a nominal voltage of 3.2v.

[@CagayanIloiloandBeyond]

Thanks, I had a suspicion it was not a lifepo4 because the sticker on mine also had a nom voltage listed at 25.6v for a 7s

[@electrogeorge6269]

Intenta comprobar con esta manera Lithium nmc batteries

[@vincei4252]

I dunno, man. I absolutely hate packaging peanuts. Congrats on the batteries, though!

[@DavidSmith-dm8ew]

There's no listing on their site for these packs, most of the stuff they were selling is gone...hmmmmm...

[@mrkeopele]

i just looked and they have so many DIY system components that i will always check them first

[@roqm1248]

Nice score! How did you get $10kwh?

[@MrPhatties]

Yeah I can't see those being $20...

[@ericklein5097]

@@MrPhatties well they were initially listed under the assumption that these were overcharged LiFeP04 (technically can safely be charged to 4.2V but it really stresses the cells with no capacity gain). So the listing was just an attempt to dump what BH thought was undesirable packs.

[@leen.3785]

Don't Get too excited about those connectors.. lol

[@benssolarandbattery]

Yeah, I see that now. Oh well...