It failed often enough that it wasn't all that useful. A cheap battery tester is better. And for 9volts you can also use the tongue test, lol (don't really though). My grandfather used to do that all the time.
this post was submitted on 10 Oct 2024
380 points (82.0% liked)
Technology
59288 readers
3740 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
What's wrong with the tongue test for 9 volts? I know it tickles some but is it actually harmful? I've been doing that for over 30 years...
It's not much power, so it's not likely to cause major or permanent damage, but it may affect others differently and could cause burns if left on too long like if someone is less sensitive and doesn't think it's live.
And if the person is grounded and if they touch the hot side of the battery first there's a chance the charge could travel through the body rather than just the tongue. It's not enough to affect a heart, but might disrupt a pacemaker or other embedded device.
And of the battery is leaking, it could cause permanent damage from chemical burns from the alkaline and poisoning from heavy metals which while unlikely to be deadly with just one battery, heavy metal poisoning is cumulative across a lifetime.
So under ideal circumstances it is safe, but there are always risks with electricity and toxic chemicals, though relatively small.
The tongue test works great. Be warned, though, that a full battery will make your tongue go numb. It'll feel like you have a big hole in the middle. Try it.
load more comments
(1 replies)
load more comments
(1 replies)
If they are not rechargeable, they don't make sense, you just use them and throw them in the used up recycle pile. And if they are rechargeable, you already have a charger that does it.
It also has to be a waste of some resource that is rare to not use up and throw away like this.
There were cheaper ones with a tester attached to the box, maybe they were energizer?
Oh, I remember that! It was inside the little packet
Just use your $200+ Fluke to check the batteries, problem solved.
My dad used to just put them on his tongue for a power check. Not entirely sure how that worked. Personally I just use a multimeter.
load more comments
(9 replies)