Different Construction Methods of 9 Volt Batteries

In this video I take a look at the way Energizer, Duracell, and Rayovac 9 volt batteries are made.

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[Jeffrey]

8:40 That construction of a stack of bricklet cells, sealed in that plastic encapsulation, seems better built against leaking than those composed of six AAAA cells?

[yambo]

That last one you opened up with the little block cells is an older style basic non-alkaline type carbon zinc "pile" construction, this type goes way back to the 60's and earlier but is now seen in some alkaliknes as well - the ones from earlier than this look different yet, encased in some kind of waxy substance

[spacecadet]

Just opened a Duracell 9v battery from costco and it was like the Rayovac battery

[JBRProductions]

I took apart an Energizer 9v and it didn't have the AAAA cells it was made just like the Rayovac battery.

[jeffreydeutsch]

I have no idea about comparative capacity but a significant space in 9 volt batteries that use cylindrical cells is air, that does not contribute to capacity. The rectangular cells seem to make the best use of the available space. Big companies source their batteries from a lot of places and you may find that that construction varies within the same brand.

[sabrinalemire]

Very informative. Thank you for your time.

[ToddDolce]

They are all (the aaaa batteries that are in these 9 volts) just too short and will not work in styluses in case you have that thought.

[hGW]

Why would the Rayovac have a lower capacity if the its cells waste less space inside the 9v casing? (not to mention they look like naked cells without their own individual casing)

[jonhille]

do you know what the materials inside of the rayovac battery stack are? i think one is zinc, is the other manganese?

[robc]

The Rayovac looks like a 9 volt transistor radio battery I took apart as a kid in the 1960s.

[milton]

So it's true!
Just 6 1.5v batteries in series

[cellgame]

Rayovac are good in a pinch, but don't leave them in you divices too long, because I have had many Rayovacs leak.

[NeverSuspects]

I bet duracell or energizer probably owns or is licencing the Rayovac. Chemistry type, current rate, and total capacity matter more then how the cells are arranged internally to get you close to 9v..

[chi-sonchang]

my tablet stylus recent runnin out of aaaa battery and i was like totally screw nowhere to buy it LOL.
btw.the orginal battery also say not for retail to add salt to the wound. so i search for easy way to get it.
yeah, i am in macao and bought the energizer duracell around a total of six type of 9v battery, all are the layer type???. so i guess i have to place an order.

[totoroben]

Surface Pro 3 stylus pens take AAAA batteries, so now I know that I can get these cells most easily by cracking apart an Energizer 9v. Previously I just purchased some Amazon AAAA batteries, as these are not easy to find.

[itkj]

I tried open the plactic of rayovac battery inside its like some cloth or fibre and some kind of carbon thingy in it(dont actually know what they all called)

[patrickpalmer]

If 6 1.5 volt batteries equal 9volts in series doesn't 6 A batteries equal 9volts as well in series making a longer lasting 9volt for use in portable amplifiers like the fender mini tone master amp that would lengthen playing time. That's what I'm working in now. The amp came with 2 1 amp speakers that I have swapped for a 6 amp flat screen speaker that eats more juice.

[CheeseMiser]

I think of Duracell when I think of the stereotypical battery

[Network-mp]

Make sure no voltage in left in a 9V battery

[wakeupidiotsnow]

Yeah, Bob Lazar says their good for powering Alien spacecraft too! Get the Energizers, more bang for your bunny! Oh Ohhh 😮 I hate batteries cause I have to change them 2-4 times a year in my smoke detector (one 9Volt only) Located in the garage attic. Heat killer for sure! Which brand of 9V do you recommend for the attic?Just went thru HEAT WAVE IN KANZA 100-113 degrees outside for 3 weeks, did not venture into attic until this morning after a 3” rain and 68 degrees. Please I’m desperate, as my wife keeps telling me the smoke alarm in the attic is chirping again! Dang it anyway!