Battery Hero是一款Mac上电池保养和维护的工具，使用"40/80"规则（笔者第一次听说），电池电量应在40%-80%之间才是最好，支持自动提醒，还不错！
软件介绍
The "40/80" Rule made easy.
Battery Hero tells you when to start and stop charging your laptop using the 40/80 Rule. Keep your MacBook in tip top shape.
The 40/80 Rule:
The latest research reveals that keeping your battery between 40% and 80% is the best way to keep it at its healthiest
Features:
* Lightweight
* Snooze notifications
* Always have plenty of charge
* Improves overall battery health
