The Pokemon Go Plus is a peripheral accessory to the Pokemon Go app for iOS and Android devices for $3499 to be released on. According to the manual of the Pokemon Go Plus, you will be able to use it for 100 days on its initial charge However, since usage varies from persontoperson, it is recommended to change the battery once per 3 months. In testing by sister site CNET, the team found that playing for 30 minutes reduces battery life by an average of 15 percent which is rather high.