Battery topper modification

It's clear because the electrolyte is at a low level, Mike. They were either clear or dark...no green until much later years were made.

 

Thanks Frank !

 

So it’s a “ black eye “ . What’s the best realistic mod for that ?

 

After posting on this thread last year I did make a Delco Eye using the green marble method but forgot to post the finished product on this thread. So, here it is. I'm happy with the results. The green glow isn't as prevalent at night or in the garage but, out in daylight like at car shows it glows really nice.

 

A little more info on the sealed type of battery eye. Different than the old battery eyes used on our cars. The sealed batteries actually had a green ball. The old eyes did not turn green, they just illuminated slightly since there was no liquid below them to buffer the light waves. While green looks cool, it would not be correct non-sealed batteries.

This is how the "green", sealed battery eyes worked. The old-style eye did not have a ball.
Anatomy Of The Magic Eye
There are 4 main parts of a magic eye. Only the head and ball of the magic eye are visible to you. The colour you see in the magic eye’s indicator is actually a ball placed inside the car battery.



How Does The Magic Eye Work?
The colored ball will float when its surrounded by the well-charged electrolyte in the car battery. On the other hand, the ball will sink when the electrolyte is under-charged. Another phase is when the electrolyte is at a low level where you will see a clear magic eye.



The original Delco eyes would show you when the water level was low as stated on the package. "Glows when water is needed". They were clear when low and dark when the level was OK as Frank states in his posts above. I tested this theory with an original eye and it holds true.

 

Cool! Thanks... learning has occurred
-MIG

 

Just a to beat this horse a little more.
I took an original eye and photographed it out of liquid (dry battery) and in liquid (full cell)
As you can see, it did not glow green and is dark or black when the battery is full.

 

If anyone is interested, I have reproduction Delco Eyes that will fit the Battery Toppers.
See my thread here:
Delco Eye reproduction | V8buick.com