Tech Spam thread - because 1/4" BSP gets 5 hand spans to the jiggawatt

[ajg193]

41 minutes ago, h4nd said:

Well, your charger is no longer making progress on it. I'll gratefully try one from @ajg193, and if no joy we can try that when I come to borrow your mig for a minute (please).

Come grab charger some time

[RUNAMUCK]

I think the tig would be better?

[tortron]

Arc usually

[RUNAMUCK]

Can a DC TIG not arc too?

[tortron]

It can, but I'm saying most people have a dirty old arc welder to give it a bunch of amps (for cheap) 

[Bling]

Just hook it to the wall, job done / acid in many places. Or wrong power flavour?

[tortron]

You want to give it some short sharp shocks to break up the crystals that form, the smart charger does pretty much that

 

You can also break the crystals up by giving the battery heaps of amps and not letting it boil dry

[SOHC]

On 14/03/2022 at 10:01, h4nd said:

Speaking of battery stuff. I have a battery (was 10.8V) I'm trying to save (just for interest). My 2.2A charger wasn't doing the biz, and @RUNAMUCKhas been kind enough to loan me his 3 or 4A "Pulse charger" (MSPaint graphs coming later). It's slowly clawing the peak voltage up, which looks promising.

My Q is: what happens if I invert the battery and slosh it around to try and loosen the crystals / acid-salts/whatever while it's charging. Does it short through the electrolyte and explode, or go flat real fast or some nonsense? ( @ajg193, Autosparkies?)

Anyone with experience with flooded lead acid batteries from roll-overs etc? Thanks team.

Epsom salts and there is a thing you can connect across the terminals called a de sulpalter   

[h4nd]

Oh yeah. I happen to have an excess of epsom salts.

[ajg193]

Doesn't logic dictate that if epsom salts actually made a shit battery really good then the factory would put it in?

[SOHC]

2 minutes ago, ajg193 said:

Doesn't logic dictate that if epsom salts actually made a shit battery really good then the factory would put it in?

I had a 7 year old battery that wouldn't even start a 4 cylinder work for another 3 years cranking a v8 after drilling holes in the top and putting in a spoon full of Epsom salts into each cell, I even sold the battery with a tractor in the end.

[Bling]

5 minutes ago, ajg193 said:

Doesn't logic dictate that if epsom salts actually made a shit battery really good then the factory would put it in?

Logic also dictates that if you make a battery not last a long time, you can sell more batteries. 

Guess which logic a battery manufacturer goes with?  

[tortron]

10 minutes ago, ajg193 said:

Doesn't logic dictate that if epsom salts actually made a shit battery really good then the factory would put it in?

its less good than adding fresh acid, but easier to get

[kws]

2 hours ago, Bling said:

Logic also dictates that if you make a battery not last a long time, you can sell more batteries. 

Guess which logic a battery manufacturer goes with?  

Logic also dictates that everything is built to a price, quality be dammed  

[Bling]

Saw this on my feed, thanks all seeing eye.

Battery resto

 

[datlow]

10 hours ago, tortron said:

Arc usually

 

Cut out the middle man and str8 jumper leads and a arc stick 

[Muncie]

I used to bolt batteries to the vibration bench at my old work while charging certainly made them better then ever after they sat for a week all crap rattled off plates settles to bottom of battery.

 

[yoeddynz]

18 hours ago, SOHC said:

.. there spanner you can connect across the terminals called a de sulpalter   

 

[SOHC]

Ramming high amps into your battery will just make the plates fuck out faster

[ajg193]

Nah nah, these guys know all the secrets that big battery doesn't want you to know.