EMP protection for SOK batteries?
- Thread starter JamesW
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KITROBASKIN
Solar Enthusiast
Have you researched threads here on diysolarforum regarding this? Are you concerned about humans setting one off or the sun putting it to us?
MisterSandals
Participation Medalist
Seems like getting a spare BMS and shielding that would be the easiest.
Protecting a battery that is connected to devices/electronics would be extremely difficult to protect. Even if you could protect a battery, it would likely be cost prohibitive, especially when compared to what a spare BMS would cost.
And having a spare BMS on hand is always a good thing anyway.
I did a brief search on the forum and with the Duck search engine. No luck on anything yet.
My source of worry is three-fold:
1) US fedgov crosses every red-line they encounter in Ukraine and appears to be trying to start an NBC exchange with Russia.
2) We are in the process of a pole-flip and (my belief) a micro nova. Persuasive people in-the-know say the 12,000 year cycles are the worst and we are at the end of one of those 12K cycles now. It's not a question of "if" it will happen .... the question is "when".
3) My other gear is "EMP hardened" and assuming the protection works -- that makes my battery pack the weak link. A blow out here means no storage.
Good idea. Spare BMS are very do-able.
Do you think the physical lithium batteries are immune to an EMP?
Nobodybusiness
Solar Sponge.
You could always use Lead acid.
Guaranteed to survive zombie apocalypse or Crazy Leaders.
MisterSandals
Participation Medalist
I think so. More than electronics by quite a bit anyway.
EMP is really only a concern for long wire runs. In a nuke or solar generated EMP event the biggest concern would be the spike in volts/amps from the grid. For grid tied systems the inverter is taking the hit. If you have long runs from your solar panels to the charge controller/inverter then it may see a spike.
EMP is a concern for the electric grid, long haul conductive communication cables and satellites. Everything else has minimal or no exposure to damage.
If the EMP is strong enough to damage equipment with short conductor runs you have a much bigger problem on your hands. The good news is all of your problems will be over shortly after a EMP that large.
EMP is a concern for the electric grid, long haul conductive communication cables and satellites. Everything else has minimal or no exposure to damage.
If the EMP is strong enough to damage equipment with short conductor runs you have a much bigger problem on your hands. The good news is all of your problems will be over shortly after a EMP that large.
ko6kL
New Member
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I would say the SOK is a good one for this, the all-metal box should be good if on the shelf and not connected. Wire connects over ~3 ft can pick up that pulse wave and bring in a spike to anything, but i think the BMS might have a chance, it's not like a sensitive radio receiver on a long wire antenna... putting some ferrite chokes on the set up always helpful, in a low power smaller system you could run the outside wires through a filter and remove more of the un needed frequency ( everything above DC ) and also bypass spikes to ground with MOV or gas discharge device.
I run a AC line filter on my in and out of the SCC , that's going to help also.
I run a AC line filter on my in and out of the SCC , that's going to help also.
AlaskanNoob
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Any sense of what constitutes a long wire run? Hundreds of feet, or thousands of feet?
Hard to say. For sun based EMP they are long amplitude waves so very long wire runs needed to have an impact. Nuke based EMP has a full frequency spectrum so shorter wires could get a V spike but not a lot of amps. I doubt it would burn any medium/high power circuits but IC/CPUs could be destroyed if they are in the surge path.
I chose SOK due to “repairable” and purchased a spare BMS at the same time. If you believe an EMP is eminent then turn off the circuit breaker.
You might also add a number of MOVs across the output. Another thought is some surge suppressors for the communication cables.
You might also add a number of MOVs across the output. Another thought is some surge suppressors for the communication cables.
KITROBASKIN
Solar Enthusiast
This is the video I used to replace the BMS in our plastic case 12V 100Ah SOK battery. Not difficult to accomplish.
Much appreciation to Dexter at currentconnected.com and Min at SOK Battery.
Much appreciation to Dexter at currentconnected.com and Min at SOK Battery.
Regarding point #1, good luck to you. Dead batteries will be the least of worries among many more serious concerns for those who survive.
How about buy another battery back plus spare BMS and alternate it regularly with your on-line battery pack? That way, when the massive emp arrives, you will have a set of batteries off-line that you can swap for the fried batteries.
automatikdonn
Becoming Offgrid
Fab an outer shell and then ground that.
Really? This laughable opinion is being put out here over half a year ago and nobody calls bs? On a forum where the results of some of the greatest scientific achievements are being discussed? Negating any real research into the topic done with the same principles and methods which brought you batteries, semiconductors and smartphones, in essence all those things you wish so dearly to protect from a politicized doomsday fantasy?
Incredible!
Anyhow, good luck @JamesW. You'll need it. But not for the reasons you think of.
For anyone who's seriously interested here's some high level explanation what happens during the shift of the earths magnetic field:
No, We’re Not All Doomed by Earth’s Magnetic Field Flip
A geomagnetic apocalypse may not be on the horizon, but there is some fascinating science behind the doomsday hype.
www.nationalgeographic.com
50ShadesOfDirt
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There is nothing wrong with being prepared in every scenario you can think of ... all preps are cumulative, from the most basic (a few days supply of food, water, electricity, etc.) to the most extensive (LDS-level or better, spare parts, redundant systems, emp cages, etc.), and everyone gets to choose how far down the path (how many scenarios deep) they'll be ready for.
There are very common scenarios (weather events, riots, etc.) happening every year, and very uncommon scenarios (nuke, emp, covid) happening periodically (100-year cycles, or not yet happened), and the most unlikely (zombie apocalypse, etc.) Any prep for anything is better than nothing at all.
I would spend time gladly on thinking through a scenario, and deciding if any preps needed tweaking to help accommodate a scenario, no matter how unlikely ... my pockets aren't deep enough for some of them, but I at least have thought about them. For someone to toss out a (new) scenario, thank you ... there's another one I hadn't thought about yet. Costs me nothing to think about them.
No need to bash someone for deeper pockets, going deeper down the path wrt scenarios ... it's all good prep-wise.
There are very common scenarios (weather events, riots, etc.) happening every year, and very uncommon scenarios (nuke, emp, covid) happening periodically (100-year cycles, or not yet happened), and the most unlikely (zombie apocalypse, etc.) Any prep for anything is better than nothing at all.
I would spend time gladly on thinking through a scenario, and deciding if any preps needed tweaking to help accommodate a scenario, no matter how unlikely ... my pockets aren't deep enough for some of them, but I at least have thought about them. For someone to toss out a (new) scenario, thank you ... there's another one I hadn't thought about yet. Costs me nothing to think about them.
No need to bash someone for deeper pockets, going deeper down the path wrt scenarios ... it's all good prep-wise.
Bluedog225
Texas
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Does anyone know what a spare BMS for SOK would cost?
50ShadesOfDirt
Solar Enthusiast
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WRT the OP q of how to prep SOK batteries, as others have mentioned above ... a key feature is their field repairability. If you invest in SOK batteries, and keep some spares around (possibly even in an EMP-proof enclosure), you'll be repairing and running your battery long before I can open up my LiTime batteries and get them running again.
I do have two SOK 12v100ah's ... and spare bms's for them. I'm after a small system to get back up and running, in those scenarios where I might lose the main system.
I do have two SOK 12v100ah's ... and spare bms's for them. I'm after a small system to get back up and running, in those scenarios where I might lose the main system.
No offense but to me that pretty much sums up prepper logic: I'm preparing for a scenario that is more or less likely to come in the future with unknown consequences instead of trying to be a part of the solution of one or more of the countless threats that exist in real life in the present. It always sounds to me like prepper wouldn't want to stop a catastrophe but rather long for one.
Hard not to be a cynic nowadays..
50ShadesOfDirt
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The prepper logic should be more like the boy scouts' phrase "always be prepared". How prepared you are is up to you ... what events you want to prepare for is also up to you. Again, weather events are pretty common in every area (snow in my neck of the woods, hurricanes in others, tornados in others).
A common preparation guideline is "stock what you eat, eat what you stock", to avoid useless stuff in your preparations.
Even a few days worth of prep is a whole lot better than the masses of folks, right before a weather event, who are trying to get anything at a walmart, and end up getting stuff that they don't normally use ... shelves are empty, useless stuff in their possession, repeat.
But, it is also OK not to prepare in any way ... everyone gets a choice.
A common preparation guideline is "stock what you eat, eat what you stock", to avoid useless stuff in your preparations.
Even a few days worth of prep is a whole lot better than the masses of folks, right before a weather event, who are trying to get anything at a walmart, and end up getting stuff that they don't normally use ... shelves are empty, useless stuff in their possession, repeat.
But, it is also OK not to prepare in any way ... everyone gets a choice.
Your examples are valid reasons to prepare. I would even go further and say its just common sense. Especially when living at places prone to extreme weather. But that's common sense on one hand and mysterious event that's purely fantasy and its only reason of existence is to cater to a subjective anxiety projected to the outside world on the other.
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