Why are my new AA batteries dead?

AA batteries start off with 1.5 volts of energy, but the voltage goes down as the batteries are used up. Once the batteries dip below 1.35 volts, they appear to be dead, even though they still have a lot of juice left. A typical U.S. home has 28 battery-operated devices inside.

Can you use AA instead of 9V?

Yep. Connect six of the AA or AAA batteries in series end to end, positive to negative and you’ll have nine volts. Each of those cells is 1.5V so if you connect 6 of them in series the voltage will be additive, in this case 9. AA batteries will give you 9V for a longer time- more capacity.

At what voltage is a AA battery no good?

A regular AA battery is a an alkaline battery has a 1.5 nominal voltage charge, but when it is fresh or brand new, it will have? 1.65 volts. That is the full capacity of an alkaline battery but when it reach about? 1.4 volts, it will be considered dead.

At what voltage is a 9 volt battery no good?

Generally, a battery is considered dead when it has fallen to about 60% of its original as-new voltage. In the case of a 1.5V, this corresponds to 0.8V, and for a 9V battery, about 5.4V.

How can you tell if a AA battery is good?

Take a AA battery, hold it over a hard surface (one that you won’t worry about scratching) about 2″ up, and drop the negative flat side unto the surface. One of two things will happen: The battery will “thud” on the surface and might even stay standing up. OR the battery will “bounce” and fall over.

What is the current of a AA battery?

Normal AA/AAA batteries that have a voltage rating of 1.5V can supply constant 50mA current for a total capacity of 1800-2600 mAh charge and 3.90Wh of energy- Alkaline batteries.

Can I replace 2 AA batteries with 9V?

Sig- nificant gains in battery life can be obtained by replacing the 9V/linear regulator combination with 2 AA cells and a step-up switching regulator. Two AA cells also cost less than a 9V battery. 1 The additional energy in the AA cells provides longer operating life when compared to a 9V battery based solution.