this post was submitted on 14 Apr 2025
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So today my car battery died, couldn't even be revived with a jump. I was able to walk to an auto store to get tools and a new battery (damn that mfer was heavier than I expected). I had never had to replace my own car battery before.

I screwed the fastener nuts the wrong way for like 5 minutes, cut my hand, and ultimately accidentally crossed the positive and negative terminals with a wrench that exploded in sparks. I don't even know what stopped me from being electrocuted but I didn't feel a thing.

While I'm happy I was able to take care of it myself and will be able to in the future, I also feel like such a dunce for not knowing wtf I was doing and almost shocking myself

kitty-birthday-sad

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[–] tactical_trans_karen@hexbear.net 26 points 6 days ago (2 children)

Comrade, I'm going to assume you're young. I'm not. But I can tell you as the handiest person I know, I got here because I never stop fucking around with things over the years. Some of my tools have chunks melted out of them from accidentally shorting a car battery. I've skinned my knuckles, stabbed, electrocuted, burnt, cut, glued, bumped, and bruised myself, and I expect I'll do it again some day but hopefully less often. The difference between us is time spent being stubborn about wanting to know how things work and a lot of times needing to save money. Don't get down on yourself, you changed your battery and that's more than many people will do.

Keep fiddling with things, you'll get there. But also, take your time to think through hazards, it makes it a lot easier. Don't ever rush handy/repair/maintenance work.

[–] Sulv@hexbear.net 14 points 6 days ago (1 children)

not young just sheltered by a 'middle class' lifestyle oooaaaaaaauhhh

I was too, now go keep fiddle fucking with things!

[–] Sickos@hexbear.net 2 points 6 days ago
[–] Carl@hexbear.net 26 points 6 days ago* (last edited 6 days ago) (1 children)

what stopped me from being electrocuted but I didn't feel a thing

Sounds like the electricity was going through the wrench and not your hand. The real dangerous electrocutions are where you touch negative with one hand, positive with another, and the electricity goes across your heart on its way to complete the circuit.

But anyway as a certified handy guy who has done installs and modifications of all kinds professionally all of this has happened to me before too. The only way to get good at it is to do it every day, and most people just aren't doing that.

[–] peppersky@hexbear.net 12 points 6 days ago (1 children)

There are less and less things in the world one can even interface with properly, so there's less and less ways to even be "handy". You were born in the wrong generation to be handy

[–] Evilsandwichman@hexbear.net 4 points 6 days ago

born in the wrong generation

Retvrn to turdition

[–] SkingradGuard@hexbear.net 12 points 6 days ago (2 children)

You didn't feel anything because it's only 12V. Be happy it wasn't worse and learn from it! cuddle

[–] CarbonScored@hexbear.net 6 points 6 days ago* (last edited 6 days ago)

Yep! There's a lot of confusion in the public sphere about how electricity works, but you cannot electrocute yourself with a car battery alone - you can touch both contacts at once with your hands and you'll feel a tiny sensation at worst.

A common myth is "It's not the voltage that's dangerous, it's the current!" and this is the perfect example of why it's way more complex. Car batteries can deliver lots of current (>40 amps), they have to to run the starter. But at 12v, the resistance of a whole human body means the voltage simply isn't enough to be dangerous under practically any circumstances (other than maybe pushing the battery against your completely bare chest, for a long time, over your heart, also you're soaking wet for some reason).

The only danger OP had was if they left the wrench bridging the contacts long enough, then it would have heated up and melted stuff. Bridging the contacts for a fraction of a second and making sparks isn't actually anywhere near as dangerous as it sounds.

[–] Evilsandwichman@hexbear.net 3 points 6 days ago (1 children)

Be happy it wasn't worse and

Do some fun experiments with your toes

[–] SkingradGuard@hexbear.net 4 points 6 days ago

disgost do not play with your toes

[–] ProfessorOwl_PhD@hexbear.net 10 points 6 days ago

Being handy isn't something you just are, it's a skill built up by not getting killed while trying to be handy. First time I tried to fix a plug socket I forgot to turn off the supply at the fuse box and accidentally shorted the wires. First time I tried to fix a broken headphone wire I just ended up with a mess of wire and solder. First time I tried to replace a light socket I found that the building had been wired before current wire colour standardisation and had to call 3 different people to find out what to do.

Today you made at least 3 avoidable mistakes, but you also successfully changed your car battery, and now if you need to do it again you can avoid those mistakes. You might have injured yourself and your pride, but you tried and you succeeded. You can do it again. You are now handy.

[–] Meltyheartlove@hexbear.net 11 points 6 days ago

This is me playing mysummercar. Making mistakes is part of leveling up the skill cape with most things in life so don't worry meow-hug

[–] ptc075@lemmy.zip 8 points 6 days ago

I put a comment up here the other day describing my first disaster of a brake job. The most important part of that whole process was that I learned from it.

I bet next time you have to do a battery, you will remember NOT to let a wrench short across the two terminals, right? Yeah, you might feel like a dunce right this moment, but you are learning. This is how you get better at being handy. It's not some magical knack that folks are born with, we do it wrong once, remember that mistake, and next time we do a little better.

[–] Jabril@hexbear.net 8 points 6 days ago

I agree with everyone about failing in order to grow, but also you can also look up tutorials on YT and see how to do it before trying it. Learning from your own mistakes is important, but learning from the mistakes of others is even better

[–] Sickos@hexbear.net 5 points 6 days ago

You're not stupid and you shouldn't feel stupid. You succeeded at something that most people wouldn't attempt. That is a skill, and you should feel proud.

I am exceptionally mechanically inclined. I get shit innately; machines and stuff tend to just make sense to me at a glance. But, that's not "being smart" and not being that way isn't "stupid". It's just a weird lucky quirk.

Not trying to toot my own horn, just providing background for the rest of this. I've fixed a lot of stuff for a lot of people, and helped a lot of people figure out how to fix their own stuff.

"Shit, I should be able to fix this" is SO FAR AHEAD of a good deal of the populace. Acknowledging a problem, analyzing that problem, determining that it can be repaired, and deciding that you can repair it yourself are all HUGE STEPS above the baseline. There are a lot of stages in the development of "handiness", and you're well on your way.

I know folks who haven't even internalized "broken things can be fixed". "I need a new TV" because an HDMI cable fell out. "I bought a replacement stand mixer" because one screw was loose. "I had to buy a new car" because the seat adjuster broke. These are ACTUAL STATEMENTS FROM ACTUAL PEOPLE. There's a type of learned helplessness that comes from folks with money who never really faced basic hardships, where the immediate response is "just throw enough money at something to remove the problem". Seat is broken -> car is broken -> buy car. No signal -> TV is broken -> buy TV. Your life, and I assume any other hexbear's, pushed you past this stage.

Then there's "someone else can figure this out". Acknowledging that a problem exists, understanding that other folks know stuff about things, and asking for help. This feels like the general default level of "handiness": I have a problem, someone else can do some magic to make the problem go away. Staying at this level indicates a lack of curiosity, in my opinion.

Next tier, there's "I wonder why this broke/I wonder why this works". Seeing something broken, doing some research, calling in a pro with a specific problem, watching them work to see what they do. This is the difference between "my sink is broken" and "hey the faucet leaks at the valve stem when I run the hot water". It requires putting in actual effort to think and poke.

Up from that is tinkering. "Fuck, it's already broken, what's the worst that could happen". Sometimes you fix things, sometimes you break them more. The willingness and ability to just take shit apart because you can probably put it back together in the same state. Hitting this stage makes you officially stand out from the crowd. This is something weirdos do. "Righty-tighty, lefty-loosey" will take you far (this being the mnemonic to remember which way to turn a screw--clockwise tightens, counterclockwise loosens)

Then there's actual repair ability. You're here! Congratulations! You knew your car had a dead battery. You tried a patch (jumping), no luck. You decided you needed a new battery. You successfully installed a new battery, with some complications along the way. The next time will be faster. There was one time my car wouldn't start at work, and I knew the battery was on its last legs, so I called up my partner to snag a battery and deliver it and a socket set. I swapped it in the parking lot while some coworkers--professional engineers--gathered, stared, and actually said "Wait, you know how to change a car battery? You can just swap in a new one?" Even among successful, skilled, smart folks, anything under a car's hood was magic that required a specialist. You are not "stupid" for struggling with it, you're a fucking genius by my standards.

Above that, would be "good at X". I can swap a battery, I can change a tire, I can change a headlight, I can change a fuse, I can change my own oil -> good at cars. I can reformat a computer, I can install an OS, I can install a drive, I can fix the Wi-Fi, I can run Ethernet -> good at computers. This is where other folks see you as a magician. They start coming to you with their problems. From your point of view, you'll still feel "stupid" because you need to look up tutorials for things and do research to figure stuff out. But to the layman, you're a genius who does the impossible.

Lastly, there's the true masters of their craft. When you pull your car into the mechanic's lot, and they just walk out and say "hey, your timing belt's off" before you've even parked. That's years and years and years of navigating the previous stages--and a hell of a lot of confidence.

Please do not feel dumb when fixing something goes poorly. The willingness to make the attempt, and the ability to reflect on it afterward are tremendous skills that deserve cultivation.

[–] SamotsvetyVIA@hexbear.net 6 points 6 days ago

It sounds like you did well? Stop being so hard on yourself. Also you won't electrocute yourself from a car battery unless something went much much more wrong.

[–] turmoil@hexbear.net 6 points 6 days ago

idk how to use any tool or do anything in the material world. I only know how to use computer

[–] Alisu@hexbear.net 3 points 6 days ago

Car batteries usually can't shock you, the voltage is too low to pass through the skin

[–] BobDole@hexbear.net 46 points 1 week ago (2 children)

The way you get good at it is by screwing up several times along the way. So, you’re on the way to being good!

[–] FlakesBongler@hexbear.net 37 points 1 week ago

Sucking at something is the first step at being kind of good at something

  • Jake The Dog
[–] GalaxyBrain@hexbear.net 18 points 1 week ago (6 children)

In general yes. Replacing a car battery is something you don't wanna screw up even once.

[–] Carl@hexbear.net 23 points 6 days ago (3 children)

One time while screwing a battery into a jeep, I started hearing a strange noise/feeling an itch in my hand. It took my like an entire minute to realize that I was touching both battery terminals and what I was feeling was electrocution.

[–] BobDole@hexbear.net 11 points 6 days ago (2 children)

Fortunately, 12 VDC isn’t enough to do any lasting damage and certainly can’t kill you.

(Yes, I know “it’s the current that kills you,” but do the P=IR on average human body resistance and deadly current and you’ll find ~30 VDC is the minimum voltage across the heart that can kill an adult)

[–] Carl@hexbear.net 8 points 6 days ago (1 children)

When I first started working with electrics, they taught me to keep one hand in my pocket when I'm screwing something into a battery or other electric terminal. It's a good reflex to develop because it prevents you from mindlessly touching something with your off hand that completes a circuit.

[–] BobDole@hexbear.net 8 points 6 days ago

We called it the “One Hand Rule, no not that one”

That and removing all watches, rings, and necklaces are the most important precautions when working with live electricity. But, it’s always best to not work on live electricity wherever possible

[–] ANarcoSnowPlow@hexbear.net 5 points 6 days ago

"Volts jolt, but mills kill"

[–] sawne128@hexbear.net 3 points 6 days ago

I was once shocked when I touched a spark plug wire on a snowmobile, even though it was isolated and I was wearing thick gloves.

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[–] HarryLime@hexbear.net 28 points 1 week ago (1 children)

I've never replaced a car battery and wouldn't know how to begin, so you're ahead of me.

[–] FedPosterman5000@hexbear.net 19 points 1 week ago (9 children)

I always forget which terminal to start with but luckily they’re at the same height so I can set my wrench down on them while I look it up on yt

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[–] Wmill@hexbear.net 18 points 1 week ago (6 children)

I've made many mistakes when fixing my own cars so take it from me it happens. There's this time I put a battery that was too tall in my sister's car because we didn't have the money for the proper battery, shit make sparks with the hood as it welded it. I fixed that with some electrical tape insulating it. There's this most recent mistake where I bored a hole into my new radiator, fixed it with some jb weld few days ago.

Among my friends and family they see me as some sort of mechanic but the sheer volume of fucks ups is pretty massive. Everything runs at least and not being a trained professional I'm doing alright all things considered so be easy on yourself. You didn't get majorly hurt or anything and you learned some important lessons as long as you don't do them twice you're good doggirl-thumbsup

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[–] Cadende@hexbear.net 17 points 1 week ago (2 children)

As someone who's fairly handy (but sucks at lots of other things ofc), the only way you get better is by doing shit and giving yourself a little space to fuck up. I did all kinds of dumb shit to get to where I am, and I'm still not nearly as good at design as my older friend, or as good with cars as my mechanic buddy, or as good at following through on regular maintenance as my neurotypical friends.

I've broken off captive nuts internal to the frame of a car, I've glued in a stubborn alternator bolt, I've tried to cut steel chain with a metal chop saw and wrecked the blade. I've seen someone set off a sawstop, I've driven a car with no brakes like 30 miles to the nearest town, I've vaporized the tips off my multimeter leads by testing the voltage of a 40v battery with them in the 10A position, I've bent or broken plenty of (mostly crappy) tools, snapped the heads clean off 100 rusty bolts, rounded them on 50 more. I've shocked myself with 120v by working on a powered-on rack mount ethernet switch with it perched on my lap, and then continued to work on it on my lap and did it again. I could go on but the point is everyone does dumb shit sometimes you just live and learn and next time you take on an even bigger project thats even more out of your comfort zone, and the more you do it the better you get.

shit, half of being seen as "handy" is just confidence. If you tell someone "wellll I watched a youtube video and I think I could fix your plumbing issue, probably" people are gonna think "this person doesn't know shit, nice of them to offer at least but I better get a real plumber", but if you have absolutely no idea what you're doing but some blind confidence and you go "oh yeah I could fix that for sure. a plumbers gonna cost you a fortune, why don't we just do it ourselves?", you might well get seen as handy even if you just improvise and watch some youtube (not saying blind confidence is the way to go but don't sell yourself short or assume that "handy" people are all actually competent

[–] Nacarbac@hexbear.net 4 points 6 days ago

Absolutely this on confidence. The first and most essential step is letting yourself be someone who can solve the problem. Next is being careful about it, sure.

Another big part is just careful attention to the parts available, as a huge number of intimidating problems (especially in plumbing) are solved by carefully browsing the catalogue and following up on the leads it offers.

[–] Sickos@hexbear.net 2 points 6 days ago

Seconding everything said in this comment, confidence goes far.

[–] JoeByeThen@hexbear.net 17 points 1 week ago

Some months back I replaced the alternator in my vehicle. I've been working on cars on and off since I was a teenager in the last century, but I mostly get by from watching videos and reading the manuals. So I watch a bunch of videos, get the alternator out of my vehicle, and then proceed to get the new replacement stuck for like 3 hours when trying to put it in. See, all the videos I watched had a hard time of getting their alternator out, so they had to removing a bracing bar. But not me, I twisted it right through the gap, LIKE A PRO! doggirl-thumbsup So when I'm watching these videos and they're all having no problem getting it back in, I'm pulling my hair out wondering what the heck is happening when it suddenly occurs to me how I screwed myself and that damn the bar needs to come out. lol, what should have been a few hour job took me two days. LIKE A PRO! catgirl-cry data-laughing

[–] FlakesBongler@hexbear.net 15 points 1 week ago (1 children)

We all have our fields of knowledge

Do I know anything about car maintenance? No

Do I know how to cook a variety of delicious and nutritious food? Yes

[–] Sulv@hexbear.net 17 points 1 week ago (1 children)

Yeah I think it's some "masculinity" brainworms I haven't rid myself of. I have significant medical knowledge that I use for work, but in day to day life, none of that is remotely useful.

I think there is real value to knowing how to do these things yourself, but feeling shame about not knowing isn't the right way.

I think it ties into 'rugged' individualism, but idk the right way to say it.

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