Lithium primary 9V batteries are characterized by their high energy density, long shelf life, and excellent performance in extreme temperatures. They are less expensive than alkaline batteries, but they also have a lower capacity, typically around 200-300 mAh.Ĭarbon-zinc batteries have a shorter shelf life and may not perform as consistently as alkaline batteries, making them less suitable for critical applications or devices that require a stable power supply. Carbon-Zinc BatteriesĬarbon-zinc 9V batteries, also known as zinc-carbon or “heavy duty” batteries, are an economical option for low-drain devices. However, they may not perform as well in high-drain applications or extreme temperatures. They provide a consistent voltage output and are known for their long shelf life.Īlkaline batteries have a capacity range of 400-600 milliamp-hours (mAh), making them suitable for powering low to medium-drain devices. Types of 9V Batteries Alkaline BatteriesĪlkaline 9V batteries are the most popular choice for everyday use due to their affordability and availability. There are several types of 9V batteries available on the market, each with distinct characteristics and capacities. These batteries are composed of six individual cells that together generate a nominal voltage of 9 volts. If it’s below 7V, replace the battery, as it’s severely depleted.Ī 9V battery is a rectangular, compact power source commonly used in a variety of household devices, such as smoke detectors, remote controls, and small electronics.For used batteries, this value should be 7.5V-8.5V.

A new battery should give you a ~9V reading.Touch the black probe to the battery’s negative terminal and the red probe to the positive terminal.Connect the red lead to the “VΩmA” port and the black lead to the “COM” port.Set the multimeter to DC voltage with the 20V range.Well, a dead battery can only cause your device to have poor performance but also cause damage to its internal components in rare cases (due to leakage).įortunately, you can test and find out whether it’s working or not in less than five minutes. Are you about to put your 9V battery into a household device after a long time? Not sure whether it has any juice left?

Battery tester 9v