Fixin' Stuff
May. 4th, 2022 01:23 pmSo, years ago, a friend gifts me an old video console, an XBox 360. It was totally unexpected, and yay!
His deck was pretty kitted out with memory and lots of controllers and remote batteries. Ah, but batteries…. These are most likely NiCads, Nickel Cadmium, cells. NiCads, like their more recent relative the Nickel metal hydrides, use a basic electrolyte, have nominal voltage of 1.2 per cell, and… tend to self-discharge. That last is to say if you don't touch them with a charge every now and again, they will get bored, lose voltage over time, and wind up flat dead.
This is not to say they are dead, per se, but that they can't be charged with a typical charger, which should not just dump volts into them without feedback, lest the battery actually be dead. If that happens, the current which doesn't flow into the bad cell will flow into the better cell; but the voltage of one cell is half the voltage of the pack of two cells.
That means the better cell will get force fed current meant for two cells.
That is not good. Not good at all.
Overcharged batteries can swell in size, heat up dramatically, even burst into flames. So good chargers will avoid shoving amps into a flat battery that still has some life in it, which means you need to jump-start that battery somehow, or kill the voltage regulation system somehow, or do something somehow to get the darned thing charged.
( So, what to do? )
***
Something else fascinates me.
Now that we as a society use videos and blog posts and other online references to fix stuff, shouldn't we take a page out of the scientific method and figure out a citation protocol?
Seriously, the first two videos I embedded above I categorized as "Unhelpful." Again, they kinda work; but I can't recommend them. Those embeds, though, give those two vids exactly the same credit as the "Slightly More Helpful" video. To do the record justice, I really should have an option to both embed and rate videos, lest the algorithm elevate the provocative but destructive repairs… just like it does the provocative but destructive social issue videos.
I guess to make any progress on our repair videos, we (again, as a society) first have to wrest control from the entities who care only to make a tidy profit on our watching habits, no matter how efficacious the advice contained therein.
His deck was pretty kitted out with memory and lots of controllers and remote batteries. Ah, but batteries…. These are most likely NiCads, Nickel Cadmium, cells. NiCads, like their more recent relative the Nickel metal hydrides, use a basic electrolyte, have nominal voltage of 1.2 per cell, and… tend to self-discharge. That last is to say if you don't touch them with a charge every now and again, they will get bored, lose voltage over time, and wind up flat dead.
This is not to say they are dead, per se, but that they can't be charged with a typical charger, which should not just dump volts into them without feedback, lest the battery actually be dead. If that happens, the current which doesn't flow into the bad cell will flow into the better cell; but the voltage of one cell is half the voltage of the pack of two cells.
That means the better cell will get force fed current meant for two cells.
That is not good. Not good at all.
Overcharged batteries can swell in size, heat up dramatically, even burst into flames. So good chargers will avoid shoving amps into a flat battery that still has some life in it, which means you need to jump-start that battery somehow, or kill the voltage regulation system somehow, or do something somehow to get the darned thing charged.
( So, what to do? )
***
Something else fascinates me.
Now that we as a society use videos and blog posts and other online references to fix stuff, shouldn't we take a page out of the scientific method and figure out a citation protocol?
Seriously, the first two videos I embedded above I categorized as "Unhelpful." Again, they kinda work; but I can't recommend them. Those embeds, though, give those two vids exactly the same credit as the "Slightly More Helpful" video. To do the record justice, I really should have an option to both embed and rate videos, lest the algorithm elevate the provocative but destructive repairs… just like it does the provocative but destructive social issue videos.
I guess to make any progress on our repair videos, we (again, as a society) first have to wrest control from the entities who care only to make a tidy profit on our watching habits, no matter how efficacious the advice contained therein.