What type of batteries are typically used in electronic altimeters?

Electronic altimeters commonly use lithium or alkaline batteries due to their favorable characteristics that suit the demands of rocketry applications.

Lithium batteries are particularly advantageous because they provide a high energy density, meaning they can store a significant amount of energy in a compact form, which is ideal for the limited space in a rocket. Additionally, lithium batteries tend to have a longer shelf life and better performance in a wide range of temperatures, which is crucial during various launch conditions.

Alkaline batteries are also effective as they are readily available and provide reliable power for low to moderate drain applications. They are versatile and can typically work well in many electronic devices, including altimeters.

Choosing either lithium or alkaline options often ensures that the electronic altimeter operates reliably throughout its flight, which is vital for gathering accurate altitude data.