Unfortunately, this tool doesn't provide all the information you need to identify the root causes of poor battery life. (howtogeek.com)
You don't want a device with poor battery life, because having the battery die in the middle of a run is no fun at all. (heavy.com)
But it also suffered from poor battery life, a confusing interface and a seriously bad reputation for violating privacy before it ever reached mainstream consumers. (tomsguide.com)