They are suitable for professional use and can be used in microphones, studio equipment, walkie-talkies, flashlights, toys, measuring devices, etc. Due to their very high capacity and discharge characteristics, they can be used directly. They are a replacement for alkaline batteries and can be recharged up to 1200 times. They are also excellent for less typical applications, such as paintball gun grips and airsoft guns, where alkaline batteries are too inefficient.