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New in EU: SOK Server Rack mount LiFePO4 batteries! Teardown & Review
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- เผยแพร่เมื่อ 15 ส.ค. 2024
- 🇪🇺 SOK 48V 100Ah Server rack battery www.europe.sok...
🇺🇸 SOK 48V 100Ah Server rack battery www.sokbattery...
Raspberry Pi 4 B Bundle in Stock www.welectron....
Support my LiFePO4 addiction / marcoreps
00:00 Intro
01:09 Overview
02:32 Why LiFePO4
03:40 Teardown
07:20 Low Temp Charge Protection
08:03 Setup
11:41 Realistic test
14:00 Overcurrent
15:15 Summary
![CAMPปลิ้น | EP.79[2/2] มานั่งฮ้านกินข้าวนำกันเด้ออ้ายยย](http://i.ytimg.com/vi/pHIS_Sdy8P8/mqdefault.jpg)
sry 4 spam 🌞 the sooner my solar power plant is ready the sooner I can focus on the pile of broken keithleys behind me
I hope you're not calling your technology & information packed videos all cradled by a buttery smooth german voiceover spam 🥺
Don't think anyone is complaining about you uploading 😅
Are you really going to completely disconnect your house?
@@douro20 there will be an automatic transfer switch for emergencies and those lovely extended sunless periods you get in Germany sometimes
Bitte spam einfach noch mehr ich glaube keiner wird sich beschweren
I work in South Africa(unstable grid, so backup is popular) as an system integrator designing systems using managed batteries like this so I have worked allot with them. My company mostly works with the more expensive price market managed batteries but in our experience the physical batteries, architecture and BMS boards(most on the market use one of two 3rd party boards and just write their own firmware) are mostly the same, as well as only minor difference between construction.
just one thing to keep in mind with these batteries, assume that the coms between inverter or charger can go down. So its a must to set all charging parameters on the inverter for redundancy in case of coms failure.
The thing we have noticed is that even the higher priced units still suffer the following.
Nr1. Unbalanced from factory, allot of batteries come to us so unbalanced that the bms cant compensate automatically and the battery needs to be cycled until all the cells are balanced.
Nr2. Communications errors for days, often there are faults in the firmware or even faults on the bms boards themselves regarding communication protocols. Or in the case of telecoms
rectifier systems they haven't updated rectifier side drivers for use with new firmware before release.
Nr3. Manuals are either lacking information, written badly or are even completely wrong.
It is because of the above reasons that the thing that defines what batteries we use is not the physical battery, but rather the technical and aftersales support the manufactures give.
We find it inevitable that some of the batteries we order will have have problems so a painless RMA procedure is a must.
So if you are looking to buy one of these batteries see if they offer support in your country.
Thank you for the valuable input! I have indeed not thought about what would happen if the RS485 failed
What is your experience with BlueNova? I've just installed one, and now I'm having 2nd thoughts. R33000 worth of battery, and no soft-start. I don't know if it even has cell balancing. Who is the best in SA?
@@johnalexander2349 We have worked with bluenova in the past but we no longer use them do to a list of issues. We usually use freedom won or balancell batteries, they are more expensive and also lack pre charge circuits. but they give us the least amount of issues. If precharge is an issues try charging the inverter capacitors with AC first. it takes a long time but it circumvents most of the surge issues.
@@xxxowerlordxxx Thanks for the reply. I don't think I'll be buying Blue Nova again. I also don't think I'll be buying a PSS inverter again - I assume you mean I must power up the inverter before the battery, when you say "charge with AC", but mine insists that the battery be on first. Also, none of its battery voltage settings match the Blue Nova requirements, although I think that's got more to do with Blue Nova's requirements being pathetic. I'll look into the two you mentioned.
Thanks for the wise words. There is no substitute for experience.
I, too, have a "screw everything" approach. Only I never receive accolades for my behavior.
That battery looks great but for such an expensive product, I really expect better capacitors. Those Samxon capacitors are unacceptable. I would have liked to see some Nichicon or Nippon-Chemi-Con caps instead.
I too have a nice capacitor fetish, but this box should not reach very high temperatures and the pre-charge circuit is only used rarely, so I am not too worried
Review of the MPP would be interesting, particularly how it can do daytime backup without batteries. It's apparently more capable than SMA's version of it and offers an upgrade path for those who want to add batteries later.
I read "Review of the NPP" and immediatelly thought HELL'S BELLS YEAH
lol, They say germans don't have a sense of humour, yet this guys a comedian
Absolute thumbs up for the simpsons reference. As dry as you sound, you're funny as all hell. Love your content dude!
I was going to say that I was feeling envy because of your new battery, but man, I'm just happy. I hope someday I can afford to buy one of these, I can't wait to go fully solar! Nice one Reps!
I offer the Jakiper 48v 100a 5.12kwh. I buy a lot of these batteries for Ukraine with the war right now. There as good as the SOK. Look them up on TH-cam. I have them for sale for $1,400 each. Or 5 for $1.375. With 5 you get a server rake. All orders will come from the wear house in United States. And questions? Just ask.
Nicely timed, I have been looking at battery solutions to my Solar PV system.
I too am a follower of the devine LFP. The first 15 seconds of this video caused such rejoice, I had to pause several minutes to regain my composure 👍
Performance and build quality is pretty good for the price. Also 394€/kWh is nothing to sneeze at. I got away a bIt cheaper with a DIY LFP Battery using LF280K Cells, 14kWh for just 175€/kWh, BMS and other materials included! But then you need the knowledge and experience to build one, and also some spare time.
Hey, love your videos on solar systems an storage lately, keep up the great work! I would realy enjoy a more in depth video on the power electronics involved, like: MPPT controll, inverters and battery management :)
I agree. These battery systems are great, but they are designed as UPS's. In order to use them with domestic solar systems, there would need to be some sort of smart interfacing, to capture excess solar generation and pass it to the batteries.
Haven't watched a video from you in a while, glad TH-cam recommended you to me again.
Do you have a link for the inverter you showed pls?. Yours are the only videos on yootoobe that I don't skip ahead while watching. Bloody brilliant mate!
Thanks! Yes, more battery/solar/inverters videos. Greetings from Sweden.
That inverter is part of the "Axpert" line of inverters from the designs of VoltronicPower. SegenSolar sells them under the Kodak brand.
Just checked the price out of curiosity and I'm pleasantly surprised. Serious battery storage seems to be becoming ever more realistic... I wonder where the future is taking us but there's a good chance more and more homes might want/need something like this.
This guy batterize! So knowledgable! Funny puns and jokes with a german accent to die for!
Great price for the capacity, available in Europe - congrats to SOK.
I always loved the rack mountable lifepo battery packs but they were mostly just available in the us and not in germany/eu so yea hope I can afford one of those babys soon
8:43 doesn't matter if it's not that different I think you would make it interesting non the less
I am paying 4 times the price per kilowatt hour now, compared to the price of early 2020. I can't wait till the cold sets in, so the heating bill and electricity bill can tag-team me into the ground.
That's a nice battery bank. At this rate with the cooler and cooler batteries in videos I'm not going to be surprised if a future one ends up featuring a flow battery
Wow... Pretty impressive system indeed, dude! 😮
I hope I can find something similar here in Brazil!
Stay safe there with your family! 🖖😊
Awesome video/review. Great product and very entertaining explanation with suttle onliners of German humor.
Don't ask me why, but seeing you carrying it up the stairs by the handles reminded me of people carrying the old Powermac G5s. Though 18kg is quite a bit lighter than 45kg!
you youngin's and your "you can carry it by yourself" computers!
back in my day, the computer was _part of_ the building!
@@GeorgeTsiros and a hard drive was the size of a washing machine
@@666Tomato666 what is this "hard drive" ?
@@GeorgeTsiros it's the magnetic version of the punch cards
@@666Tomato666 why would you put punch cards in washing machines are you mad??
finally! staying awake at midnight to watch your video!
You've the best battery and the MPP Solar all-in-one.
You're very smart. I can tell by your humor.
ROFL I have been doing the all-the-bags-at-once thing ever since I was a kid! Love it =)
I got 30kWh in BYD B-Box (also rack formfactor). Really nice stuff. It effectively doubles my PV yield, and over the year I use only one third from the grid, the rest from PV and batteries.
I have 3 High-voltage Pylontech batteries in my system, have been solid so far. They are regarded as the best option for home PV here but have very limited availability now
Until SOK came along.
Greetings from SOK, may I ask what DC voltage your system ?
@@minwang102 Hello, the batteries are 3 x 96 Volt (nominal) modules, so 288 Vnominal. Maximum allowed voltage is 324V.
I have a diy system of 3.5kwh in my camper van. And a 3kw renogy inverter. Charging through alternator with 50a(12v) or trough solar 50a. Run drills saws and even compressor on it before. Does not seem to mind 250A at the bms. Works really well
Would love to see a detailed video on your inverter.. I don't think you gave your walk through of a transformer less inverter.
Just about to flick the switch on my own solar/grid charged battery system with 5KW of storage.
And yes, grid charged. We have an energy provider here that gives per KWh pricing per half hour that closely follows the wholesale price, so there are times where it would be stupid not to charge, and times where it'd be stupid not to use battery power to skip expensive peak hours.
Mines AC coupled, so no complicated change over system, the inverter just generates whatever power is being pulled from the grid to make the meter see as close to 0w as possible. Great system. Using Victron for the inverter.
As always a very nice and entertaining disassembly of some high-tech equipment, accompanied by a humorous yet complete description of the product. However, after checking SOK's EU website I'd be tempted to qualify the price of a single batterypack as "eyewatering" indeed, especially when I calculated I'd need at least 4 of them (approx. 20KW for 300 minutes) to power all the electrics in my (humble) home comfortably (heating, water, cooking, washing, etc) in summer- and wintertime both.
I do not doubt however the batterypack is of a high quality compared to other home-battery installations and probably competitive price-wise (e.g. Comparable Tesla Powerwall home battery (13,5KW for an 8 hour day) installation costs probably around 12000€ (without installation costs). I'll leave it to Marco Reps to comment on this and tell me I'm comparing lemmons to cherries, or something like that :)
Greetings from New Zealand. A few years ago I looked at whole-house-batteries and at the time the 13kWh Tesla was $19000 NZD, BYD 5kWh was $5000, and similar lithium chemistries were between $4000-7000 for 5kWh installed. I see a local distributor offering these new SOK batteries in September, 5kWh for $3600 and 20kWh for $13200. I suspect the SOK price is just the batteries and maybe a box to house them, not a full install which would add $1000-2000 NZD to the system price. Today (8 August 2022) 1nzd is 0.6euro, so my $3200 is close to 2000€, for 5kWh battery... Do some numbers help you feel like your comparison is less of a fruit salad?
If you are seriously thinking about getting batteries and running a significant count of loads (especially inductive loads like motors) off it all, I would recommend checking and double checking your numbers and sizing your inverter appropriately, or oversizing it. Having an inverter that can comfortably handle the 'average' load of your house is very different from one that can manage 'peak load' (that usually arrives right as the grid drops out). And I have learned to my lament that my current inverter does not cope well when solar+grid are present but the house is drawing more than it's faceplate rating. I should have bought a bigger unit...
@@SittingDuc I've just installed a pair of ROSEN (basically the same as SOK - down to the interface even).. the hardest part was lifting them! - no really 10kWH batteries weigh in at 109kg.. NZ is like AU, no license needed for 48VDC
i waiting for 3 of these to be delivered - pleased to see i think i made the right choice.
you are a good man Marco
"The patient is dead" That took me a second to process haha
High quality review. Thank you. I like your humor.
I gotta say... LifePo4 is a damn good chemistry. No, it's not as energy dense as LiMnCo but screw it. It doesn't like exploding and it has a longer lifespan if you get quality cells. Good enough to build a big, powerful battery pack with :)
All in all a nice battery bank, only disappointing thing I saw was the el cheapo electrolytic capacitors on the BMS. Don't think they will outlast the cells if they are as good as claimed.
Impressive technology
Thanks for sharing your wonderful content. 🙂
All these insane batteries, and still no proper 100 microOhm shunt standard?? :-P PPMs police already dispatched.
1:19 Who else expected an arc jumping from red to black at this moment? 💫💥
We are waiting for PIP 11 KW MAX - MR review…
Thank you for your super in-depth reviews!
Would a modern well insulated hot water tank loose too much heat or lack of space resulting in the instant heater? I think people here are splitting the storage between water and batteries
No I think it would've been an even better solution! I just always had a tankless heater there and it didn't even cross my mind to look for something else
@@reps Also if you use a heat pump based ("hybrid"?) hot water tank, you would effectively cool the room it's sitting in. Good for somewhat lossy inverters, not to mention servers etc?
@@reps It would be optimal to "charge" the water tank when the batteries are full.
@@reps Even better: Hot water accumulator/heater tank hooked up to a solar collector. Pretty good ROI if you use non-trivial amounts of hot water.
@@reps heating of 200 liters of water by 50 degress will accumulate 200 * 50 * 4180 = 41,8 MJ of energy, which equals 11.5 kW*h. So it's twice more than SOK battery. And few times cheaper
I'd be keen for a video on the inverter/charger
"Absolutely space-time bendingly dense" I can watch this part 1000 times and still laugh.
German humor is my favorite. And the fact that it's mixed with engineering stuff is even better 😄
Another tear down and analysis? Yes please.
OMG Steel Toe safey socks!?!?!?! Classic man ..
Marco, pls take good care and make more video.
It would be amazing to keep us updated of your solar exploits - so rare to see someone so honest and knowledgeable making an achievable 230V solar setup for us European scum ❤
Marco Reps vs The Signal Path.
I'm sure, that horizontal and upside down mounted fault current switching must be well tested, especially in DC with welder-like voltages. This can go wrong D:
I love that you said "tens of years" instead of 'decades'.
8:38 I would watch a Reps video about potato peelers.
I would love to see a proper video to the Inverter
@7:22 you use some cold gas , Will Prowse takes his time to make some ice LMFAO
Moin Marco, I wonder if there will be another part of the attack of the 300gk xyz woman...?
Thx for all your deep looking videos - like it
It's cool to see these things in rack mountable formats. Seems like it wouldn't be very difficult to put these in a regular server rack instead of a standard UPS for a fully off-grid server setup.
I would just slide steel packing plates in the frame to squash the batteries.
We want to see a video on that inverter :P
I like how you decide to wear latex gloves just in case you don't get a electric shock
Nice setup 😀
Oof one time I ordered a 3 kw/hr server rack mounted lead acid battery with a 2 phase inverter for server power backup. Our office was on top of a steep hill and I had to lug the thing up the driveway with a hand cart. Not fun.
Get a Mitsubishi or Daikin heat pump then you got free heating and cooling all year!
I'm currently using an off-grid victron 24v|5000w|230v + 200 Ah SLA to fill the gap for regular power outages here. Works like a charm, it even runs my inverter aircon for ~90 mins. I've chosen SLA because its cheaper and does better at high temperatures (45c) than lithium.
🤔 about PWMing your extra solar power to a water heater tank using an arduino and an SSR ?
Building a solar system battery from a Model S battery form a wreck, great DIY project. Also building my own BMS with a 250 amp load capacity.
3:45 holy carp 😳
those cells NEED compression. even if the manufacturer of the pack does not do it. the battery makers certainly demands it regardess of the load. ~200kg of compression is enough. and that 125A breaker is utter junk. replace it with a proper one from hager.
Definitely would like to see a video on that sexy inverter/charger!
Interesting. I see a local distributor proudly announcing they will sell 4 boxes for 20kWh in September, for the low low price of an arm and a leg :D
Also interesting that the whole thing seems more open, more flexible, and generally more 'interesting' than my current house-side lithium chemistry battery, while also being cheaper. Which means battery tech is still improving, which is nice.
Might be interested in a review of your 11kW inverter, my 5kW inverter bugs me some days.. Usually when the 'Pokemon go' player wraps their car around the power pole down the street and everything goes dark before the system switches over...
Do you know if they have a CE label and the usual checkings you need to be "covered" by insurance when your house burns down? (Pedantic I know)
45KG is a bit light, I remember carrying 10 65kg battery packs for a APC system through a 1850s building up 2 flights of stairs and they didn't even offer me a coffee when I finished the installation!
Boy that Simpsons reference at 12:11 got me good
Can you give us a tutorial on the Grafana Dashboard you made? I wanted to use it in a project but there are just barely any understandable tutorial's out there ...
@MarcoReps check the echo in the Tear downsection. It makes it even harder to follow this manifest. haha
does installing all these cables mean you are not looking to move anymore as you alluded to on twitter a good while ago?
Still looking to move asap. The agricultural wasteland, the stairs preventing me from adopting more interesting boat anchors, the slanted walls and the summer heat under my roof. All terrible. But it's a pretty big step that I don't want to take in a rush. So I am just carrying on as usual until I find the perfect new lab
@@reps you'd need something like an old barn for yourself and your test equipment.
They have been working well for me have a few paralleled for my PV system
2k per battery is mad, just got 16 eve 304ah cells for less money
Where the hell do you get an 304Ah LiFePo⁴ battery for just 126€?
@@Toxicity1987 docan technology or shenzhen quisho, both good suppliers
@@zxrjimmy1 thanks I am planning my own 48v battery to go with a dumpster dived apc ups. Did you have to pay much for shipping I saw they have a Poland warehouse. I'm in ireland
@@frzen they both have Poland warehouse, 1900 I think in total shipped to door,
@@zxrjimmy1 thanks Jimmy
weird background noises around 6:20 or is it just me, i had to pause a few times to be sure lol
5KWH???? no way... thats insane... and with all the LiFePo4 benefits
Did you think about buying prismatic cells yourself to assemble a similar battery on your own? Why did you decide against it? Time?
P.S.: Where can one buy those busbars? I search for some having a hole distance of around 3cm.
P.P.S.: How many newton meters do you use to attach your cables? Are 3nm enough? That is the maximum of your newton meter screwdrivers, isn't it?
And another question: Where did you get the MPP Solar Inverter. It seems like there are many clones around at AliExpress, but I don't find a real shop in Germany.
I shamelessly reached out to a couple of nice battery manufacturers and asked for a TH-cam freebie. Had this been unsuccessful I would've gone with a DIY pack of course.
The MPP Solar box I got the manufacturers international eBay store. They have a listing with DDP pre-paid taxes and customs: ebay itm 275271610759
@@reps your shamelessness is very appreciated
Nice vid. Are you required to use an electrician when it comes to the final install?
As far as I know, no. Only if you want to sell your power to the grid. And if you want the fire insurance to actually pay up if your house ever burns down.
@@reps Do the power companies there make restrictions on what brand of inverter you can install, or they just require conformance to some technical parameters or certificates?
@@gabiold for grid tied inverters yes, there are a a few standards that the hardware must fulfill. quick google leads me to VDE-AR-N 4105 for example. but I really don't know since I am not going to feed power into the grid
@@gabiold I know where I live it's required that your grid tie inverter is connected to the internet :/
Balls To the wall. Thanks Udo.
The Simpsons reference "Do it for her" xD
Yes for.video on inverter... AND that screw driver with the clickly click click
This looks like a rebrand, or similar of the Jakiper Battery Jehugarcia reviewed a couple of weeks ago. They seem to have US and EU stock as well. Maybe worth checking them out aswell.
as an owner of a MPP Solar Pip2424, i would have loved to see SOK make a 24v variant of that rack battery, but sadly they are all 48v in that formfactor
Still fries my brain that there’s the equivalent of 8 of those inside my car, and I can’t get the juicy electrons out the car and back into my house because my car doesn’t do V2L.
There will be some CCS-based solutions soon, so just be a little bit patient. The last decade there were not much proper cars, only combustion engine cars. Nowadays, there is a point reached where manucaturers can develop a CCS-V2H Solution - there are enough people with electric cars who are interested in this. Let's see!
LFP prices is just absurd... I checked what it would cost just to run a typical day of powet at home... yea.. that was not realistic
Isn't that true for batteries in General? Lead Acid is not cheaper than 50%. While that is significant, it comes with some drawbacks, too. If there is a fixed installation, the weight is not the problem. But if the power cycles are accurate and Lifepo4 does do more than just 10x the power cycles of a lead acid battery, it might be worth it.
However, that doesn't deny that the prices are really not cheap. But something like 3kWh should be OK for an emergency and should be a lot cheaper than 1000€. Then you could have enough to charge mobile phones, a laptop and maybe a washing machine.
If you have electric heat or air condition battery storage doesn't really make sense yet. However if you heat by burning wood or gas then with solar panels and batteries you could be free of the grid.
@@mrfrenzy. Especially considering the electric regulation of some wood ovens. I think central heating with wood doesn't take that much electric energy, and it would be a pity not to be able to use it if the grid fails. In Germany, gas and oil are probably the most common. Electric heat was pushed somewhen in the past (70s?). Personally, I've only heard about it but never seen an actual house having electric heat or an air conditioner. I see the point that it would be viable to regulate the electric heat, so all the energy is stored in a warm water tank. However, if someone would like to have off-grid capabilities, battery storage would ease one's mind, wouldn't it?
How much energy do you need per day?
@@gabiold the problem is not storing a few days worth, you need to store enough energy to heat your house from october-february when the sun produces very little energy. That is impossible with batteries.
So, energiwende has caused people to buy backup batterys and solar....
Why not demand that the windfarms and solarfarms that has caused the instabilty in the grid has the backups?
They should all have storage for atleast one days production the towers to the windturbines could store a lot of batterys or hydrogen (if you prefer that)
You need a second one, it’s hard to get by these days without a good pair of soks
glad to see that your grafana suffers from these annoying "unexpected error" messages too.
Just one question, what program do you use to simulate electronics circuits?? Thanks. Btw love your videos!!!
Falstad
Yes, I do hope you do an in depth review of the solar controller, all it's ins and outs and a few of it's sideways and downs. Does it service loads straight from the panels? It would be great if I could charge my ancient Mitsubishi minicab Miev EV without going through my batteries. My shack (beach house it Tasmanian) is off grid.
I wonder why you a battery and long term oriented person would have a water heater like this. Arent water tanks still more efficient at storing the energy than the batteries?
Meh... With 3-5cm insulation on them... They are not, I assume. I have a water tank, and I am just about to set up some datalogging to measure the incoming water flow, power consumed and the temperatures, to check whether it reaches 70% efficiency at least or not. My assumption is it won't.
I am committed to enclose it in 15cm thick rockwool panels...
I think storing energy in water is only better if you need that energy as heat or it comes as heat anyways (solar heating, room cooling HVAC, other heat loss you can capture).
Btw, I am thinking for ages how to capture all the heat energy we throw away. Regrigerator dissipating into our kitchens, computers, if you have aircon, all the heat from the room + put in by the compressor is just thrown out! To name just a few very easy ones.
Those alone are probably more than a household would need for their hot water use in summer.
Then a not so easy one: drained hot water during shower, dish washing, etc... I assume almost 95% of the energy in the water heated up by expensive methods is just drained down without actually using it.
You are right in the regard, that Macro could use excess electricity, beyond the battery capacity, to heat up bulk water and store energy in that way.
You could even fed the water heater with it so in case the tank has not reached, say 60°C yet, the flow heater could bump the temperature up to the needed level.
While the efficiency, over all, might not even be that much better, it would offer a huge energy storage option, which might be a nice option.
Bulk hot water storage also offer the option to use a heat pump to supply heat, or anything else.
Excellent video!!!
Would you be so kind to share the pinout for the RS232 and RS485/CAN if you have it? it seems to be missing from the manual
Ja.. ich bought the jakiper batteries. Zwei of them.. und will be kaufen zwei more in a few months
I can sell the Jakiper batteries. I buy a lot of them and have extra for $1,400 each.
2 battery =$1,375. They ship straight to you from factory wear house in United States
Wait what do i see here a non smart meter?
Thank you very much for your great and informative videos on solar power and all the other interesting topics.
How do you get the inverter to work with a 3 phase installation. Does it only power L1, meaning any consumption on L2 and L3 will still come from grid?
Are you aware if there a MPP solar Hybrid Inverter with 2 MPPT trackers available (for those of us with south and west facing panels)
Thanks!
The pip max I bought comes with a parallel kit by default for either a higher power single phase or additional phases at an adjustable phase angle (so you can set up 3 inverters with 180° angle offset for 3-phase).
It has 2 separate 500V PV inputs, but I am not sure yet if they are just internally paralleled or lead to separate MPPT trackers
@@reps Much appreciated, thanks!