Comments on: Testing the 9V Battery Hack (or: Assault on Battery)

By: Laptop tamir

Laptop tamir — Wed, 04 Nov 2009 22:47:16 +0000

Good share nice

By: Gal

Gal — Mon, 02 Nov 2009 18:44:19 +0000

WoW! Really cool! <:o

By: VeArt

VeArt — Mon, 02 Nov 2009 18:41:50 +0000

Very interesting! Thanks fir idea! ;)

By: Vitali

Vitali — Mon, 02 Nov 2009 18:38:48 +0000

It really works! I’m surprised…

By: Purple

Purple — Sun, 06 Sep 2009 08:23:18 +0000

A simple way to tell what polarity a battery is, and if it has a charge is to wet your lips and touch each side of the battery to your lips. You may have to open your mouth. If it tingles you have power. which lip tingles more will be the negative side.

By: Luke

Luke — Wed, 26 Aug 2009 20:33:42 +0000

I made this discovery about 8 years ago, while throwing dead 9V batteries at a wall (dead-end job…). Of course, I didn’t know I’d found anything interesting, because I’d never heard of AAAA batteries–but this is awesome, as I now need to power my laser pointer. Thanks!

By: medyum

medyum — Mon, 27 Jul 2009 10:48:12 +0000

I too discovered this a few years back when need AAAA’s for a laser pointer, saves a fortune when taken from 9V as opposed to a package of 4A. huge markup thanks for the reminder of this usefully Idea.

By: Krikkit

Krikkit — Sun, 26 Jul 2009 04:54:15 +0000

Thats so strange. My ti-83 is also covered in white out on the back and has 9V component AAA batteries in it.

By: don

don — Fri, 24 Jul 2009 21:02:12 +0000

you forgot to account for amps. the AAAA batteries in a 9v have about half the charge of a AAA. BTW your price of .7 is way over what I found. but even it wasn’t the difference in amps means that AAA last 1.8 times longer than the AAAA bringing the price up to $.594 for the equivalent of one AAA.
btw brands and types to use if you choose to.
Panasonic-yes
Energizer-yes
UltraLife-yes
Duracell-some but not all
DieHard-no
EverReady-no
lithium 9v batteries have 3 3.2 cells
NiMH have 6 1.2v cells
some brands of cheaper carbon zinc only have 5 1.5v cells.

By: Leon Dison

Leon Dison — Wed, 08 Jul 2009 23:49:27 +0000

A Waste of time. When the battery is dead, I use a pair of small side cutters to open the old battery case and use battery terminals to make connections on various battery operated items. It’s cheaper than buying them at Radio Shack.