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I know a guy who tried doing something like this and burnt his house down. One of the batteries exploded and took the others with it.

by dwedge 8mo ago

elliottkember 8mo ago
I was working on an LED project that involved some reasonably-sized lithium batteries, and the guy in the hardware store said "I don't want to hear about you in the news tomorrow". That really stuck with me, and I say it sometimes when I think someone's going to do something dangerous.
ray_v 8mo ago
I was just looking for the comment telling me this is _probably_ a bad idea, so thanks!
- fgfarben 8mo ago
  Driving a car down a busy highway is way more dangerous than assembling one of these packs and storing it in your garage.
  - ray_v 8mo ago
    Sure, life is all about risk - no doubt about that. But I guess I'm not tooling down the highway in a DIY contraption I built in my spare time with little regard for safety from plans I found on an Internet forum and parts bought from Ali Express. Not to say that _you_ shouldn't do this ... just be careful out there!
jandrese 8mo ago
Yes, always have a fire plan in mind when starting a lithium battery project. They go up very quickly and generate a ton of choking smoke. It only takes one oopsie with a screwdriver or dropping a cell to start a fire.
jacquesm 8mo ago
That's why you don't touch Lithium Ion packs unless you know what you are doing. I've repaired many Bosch packs before I tried building my own and seeing the guts of professionally designed and robotically assembled packs after they're a few years old is a very sobering exercise in what to do and what definitely not to do. There are a bunch of youtubers that go out of their way to give massively dangerous advice to people and I always wonder what their liability situation is.
- defrost 8mo ago
  While you are Not My Engineer and <disclaimers> .. are there any bloggers / vloggers that are or at least seem to be giving good advice that you are comfortable passing on?
  - jacquesm 8mo ago
    Yes, there is an Australian dude that has pretty much seen it all, and he's paid his tuition fees so he's a lot more careful now. I'll look up his name tomorrow, it's been years since I last looked at that (it's 5 am after a night of hacking so I'm off to bed).
  - jacquesm 8mo ago
    Found it: https://www.youtube.com/c/HBPowerwall https://www.youtube.com/c/HBPowerwall I like the simplicity, I don't like some of the wiring choices but I'm not sure if that is to be code compliant in Australia. Enjoy!

I know a guy who tried doing something like this and burnt his house down. One of the batteries exploded and took the others with it.

by dwedge 8mo ago

I know a guy who tried doing something like this and burnt his house down. One of the batteries exploded and took the others with it.

elliottkember 8mo ago

I was working on an LED project that involved some reasonably-sized lithium batteries, and the guy in the hardware store said "I don't want to hear about you in the news tomorrow". That really stuck with me, and I say it sometimes when I think someone's going to do something dangerous.

ray_v 8mo ago

I was just looking for the comment telling me this is _probably_ a bad idea, so thanks!

fgfarben 8mo ago
Driving a car down a busy highway is way more dangerous than assembling one of these packs and storing it in your garage.
- ray_v 8mo ago
  Sure, life is all about risk - no doubt about that. But I guess I'm not tooling down the highway in a DIY contraption I built in my spare time with little regard for safety from plans I found on an Internet forum and parts bought from Ali Express. Not to say that _you_ shouldn't do this ... just be careful out there!

jandrese 8mo ago

Yes, always have a fire plan in mind when starting a lithium battery project. They go up very quickly and generate a ton of choking smoke. It only takes one oopsie with a screwdriver or dropping a cell to start a fire.

jacquesm 8mo ago

That's why you don't touch Lithium Ion packs unless you know what you are doing. I've repaired many Bosch packs before I tried building my own and seeing the guts of professionally designed and robotically assembled packs after they're a few years old is a very sobering exercise in what to do and what definitely not to do. There are a bunch of youtubers that go out of their way to give massively dangerous advice to people and I always wonder what their liability situation is.

defrost 8mo ago
While you are Not My Engineer and <disclaimers> .. are there any bloggers / vloggers that are or at least seem to be giving good advice that you are comfortable passing on?
- jacquesm 8mo ago
  Yes, there is an Australian dude that has pretty much seen it all, and he's paid his tuition fees so he's a lot more careful now. I'll look up his name tomorrow, it's been years since I last looked at that (it's 5 am after a night of hacking so I'm off to bed).
- jacquesm 8mo ago
  Found it: https://www.youtube.com/c/HBPowerwall https://www.youtube.com/c/HBPowerwall I like the simplicity, I don't like some of the wiring choices but I'm not sure if that is to be code compliant in Australia. Enjoy!