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He has powered his house for 8 years using laptop batteries

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Re: He has powered his house for 8 years using laptop batteries

#21

Post by metalman »

mschuster91 wrote: post #13
shakna wrote: post #2

If you want more of the story, probably start over here [0] [0] https://secondlifestorage.com/index.php?threads/glubuxs-powe...

Jesus. No cell balancing, protection or monitoring that I can see, and most importantly - wires directly soldered onto the battery instead of spot-welded. That's a fire hazard waiting to happen. People, if y'all ever build your own battery pack, please think about safety. Or if you don't, place a giant bucket of dry sand above the pack, with the bottom layer being made of acrylic or other plastic that melts. That's a…

He did and end run around saftey, and just put the whole system in a shed, which in any real emergency situation , dramaticaly reduces risk to life and property. Also each battery bank is.air gapped , which will significantly reduce any fire from spreading to adjacent banks. The system looks well made, and has 8 years up time. I live off grid and am useing lead acid batteries, but would like to switch to sodium.

Re: He has powered his house for 8 years using laptop batteries

#22

Post by iokanuon »

nextaccountic wrote: post #18
mschuster91 wrote: post #13

Earlier quoted context omitted.

Jesus. No cell balancing, protection or monitoring that I can see, and most importantly - wires directly soldered onto the battery instead of spot-welded. That's a fire hazard waiting to happen. People, if y'all ever build your own battery pack, please think about safety. Or if you don't, place a giant bucket of dry sand above the pack, with the bottom layer being made of acrylic or other plastic that melts. That's a…

> with the bottom layer being made of acrylic or other plastic that melts. Why is this bottom layer important?

If you don't have a bottom layer the sand will immediately fall

Re: He has powered his house for 8 years using laptop batteries

#23

Post by mschuster91 »

pantulis wrote: post #16
mschuster91 wrote: post #13

Earlier quoted context omitted.

Jesus. No cell balancing, protection or monitoring that I can see, and most importantly - wires directly soldered onto the battery instead of spot-welded. That's a fire hazard waiting to happen. People, if y'all ever build your own battery pack, please think about safety. Or if you don't, place a giant bucket of dry sand above the pack, with the bottom layer being made of acrylic or other plastic that melts. That's a…

> place a giant bucket of dry sand above the pack, with the bottom layer being made of acrylic or other plastic that melts. Honest question: is this a real hack that people do in these situations or did you just come up with it?

It's a hack I started doing after a friend's home almost burned down from a vape battery gone bad.

In any case, dry sand is one of the methods firefighters use to put out battery fires, the other being dumping it in a giant vat of water (that's what's done for electric cars) or class D fire extinguishers which are extremely fine powdered salt.

Re: He has powered his house for 8 years using laptop batteries

#24

Post by thehta »

Arnt wrote: post #17
mschuster91 wrote: post #13

Earlier quoted context omitted.

Jesus. No cell balancing, protection or monitoring that I can see, and most importantly - wires directly soldered onto the battery instead of spot-welded. That's a fire hazard waiting to happen. People, if y'all ever build your own battery pack, please think about safety. Or if you don't, place a giant bucket of dry sand above the pack, with the bottom layer being made of acrylic or other plastic that melts. That's a…

Why is soldering a fire hazard? Just curious.

Taking a guess, probably has something to do with batteries heating up and solder having a low melting point.

Re: He has powered his house for 8 years using laptop batteries

#25

Post by iokanuon »

iokanuon wrote: post #22
nextaccountic wrote: post #18

Earlier quoted context omitted.

> with the bottom layer being made of acrylic or other plastic that melts. Why is this bottom layer important?

If you don't have a bottom layer the sand will immediately fall

Actually thinking about it - why not have everything encased in sand all the time, you'd just have to be a kid playing in a sandbox when doing maintenance

Re: He has powered his house for 8 years using laptop batteries

#26

Post by voigt »

isoprophlex wrote: post #12

This is AI slop, unworthy of anyones time. If the author reads this: please just supply us with the prompt next time. We'll fill in the "lets dive into"s ourselves.

I went to the comments to see if I was the only one who felt this way. I don't judge using AI to correct spelling or style issues, but this is just too much.

Re: He has powered his house for 8 years using laptop batteries

#27

Post by f4c39012 »

iokanuon wrote: post #22
nextaccountic wrote: post #18

Earlier quoted context omitted.

> with the bottom layer being made of acrylic or other plastic that melts. Why is this bottom layer important?

If you don't have a bottom layer the sand will immediately fall

like in Minecraft

Re: He has powered his house for 8 years using laptop batteries

#28

Post by arghwhat »

nextaccountic wrote: post #18
mschuster91 wrote: post #13

Earlier quoted context omitted.

Jesus. No cell balancing, protection or monitoring that I can see, and most importantly - wires directly soldered onto the battery instead of spot-welded. That's a fire hazard waiting to happen. People, if y'all ever build your own battery pack, please think about safety. Or if you don't, place a giant bucket of dry sand above the pack, with the bottom layer being made of acrylic or other plastic that melts. That's a…

> with the bottom layer being made of acrylic or other plastic that melts. Why is this bottom layer important?

If the batteries catch fire the acrylic bottom will melt and automatically dump the sand onto the fire.

This is a questionable setup though. You'd need massive amounts of sand dumped evenly, which requires more design and verification. Acrylic is also itself flammable.

A basic water based fire suppressor would not extinguish a battery fire but it will cool it and the room, limiting spread.

Let the experts design this kind of thing.

Re: He has powered his house for 8 years using laptop batteries

#29

Post by SuchAnonMuchWow »

Arnt wrote: post #17
mschuster91 wrote: post #13

Earlier quoted context omitted.

Jesus. No cell balancing, protection or monitoring that I can see, and most importantly - wires directly soldered onto the battery instead of spot-welded. That's a fire hazard waiting to happen. People, if y'all ever build your own battery pack, please think about safety. Or if you don't, place a giant bucket of dry sand above the pack, with the bottom layer being made of acrylic or other plastic that melts. That's a…

Why is soldering a fire hazard? Just curious.

Soldering dump a ton of heat into the cell, which has chances of destroying the cell. That's why most of the cells are spot-welded: its similar to soldering, but its much quicker and is localized only on the part of the metal that need to be melted, so the heat don't have time to reach the cell itself.
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