# Why are 9 volt batteries different?

## Why are 9 volt batteries different?

Though the cylindrical ones look like AAA batteries, they are actually a bit shorter in length. Hence they have lower capacity than AA and AAA cells. As capacity remains same in a series connection, the 9V battery end up having lower capacity that AA and AAA cells/batteries.

What is the equivalent of a 9 volt battery?

9V Battery Equivalents Are: 6LR61, 6AM6, Duracell MN1604, Rayovac A1604, Energier 522, Varta 4922, MX2400, 1604A, Radio Battery, Smoke Alarm, 9V Block, Krona, PP3.

### Is there a difference between 9V and 9V2?

Q: How doe a 9V2 battery different from a 9V battery? I think it just means you are buying two batteries, no difference.

Are there different kinds of 9 volt batteries?

The nine-volt battery format is commonly available in primary carbon-zinc and alkaline chemistry, in primary lithium iron disulfide, and in rechargeable form in nickel-cadmium, nickel-metal hydride and lithium-ion.

#### At what voltage is a 9V battery dead?

6V to 7.6V
In the case of 9V batteries used in smoke alarms, smoke alarms start functioning between 6V to 7.6V. If the voltage falls under 6V for this device, then a particular 9V battery is considered dead.

How long does 9V battery last?

Typical 9 volt battery has 500 mA hour capacity, continuous use would provide 25 hours per battery. All batteries are different, so 25 hours is an average, if it is turned off some times the life will be much longer.

## Is a 1.5 battery the same as a 9 volt?

A single cell of the typical type used in household batteries is 1.5 volt. When you put two together in series you get 3V. A 9V battery actually has 6 small 1.5V cells inside it. D, C, AA, and AAA are all single cell batteries at 1.5V.

Why are 9V batteries Square?

Originally Answered: Why are 9V batteries square when all the others are rounded? They used to made from a small stack of 6 square rectangular cells. This got the voltage up to 9v and was the most space efficient design to get as much energy in the battery as possible.

### Which 9V batteries are made in USA?

Duracell MN1604B2 9 Volt Size Battery 2 pack – Made in USA, Exp.

How big is a 9 volt battery?

The PP3 size battery is 48.5 mm × 26.5 mm × 17.5 mm or 1.91 in × 1.04 in × 0.69 in . Both terminals are at one end and their centers are 0.5 inches (12.7 mm) apart. Inside an alkaline or carbon-zinc 9-volt battery there are six cylindrical or flat cells connected in series.

#### What are the different sizes of batteries?

Battery Sizes. But the two most common consumer battery varieties are the cylindrical battery and the prismatic (rectangular-shaped) battery. Starting with the cylindrical batteries, the standard-sized dry cell battery is the single cell AAA (Triple A) battery, which has a length of 44.5 mm and a diameter of 10.5 mm.

What objects use a 9 volt battery?

Radio Controllers: 9-volt batteries are commonly used in the controllers of radio-controlled cars and trucks, with the battery solely being used to power the transmission of the radio signal to the car or the truck. Walkie Talkies: Walkie talkies, especially those intended for use by children, often make use of 9 volt batteries.

## What is a 9 volt battery used for?

A 9-volt battery holds the same amount of charge as 6 AA batteries, making it a much more powerful battery for Walkie-talkies and handheld talk radios. These batteries are used to transmit the signals between the two devices, while simultaneously powering the microphone and speakers.