Lenovo K900 Smartphone - Manual (Page 12)

Touch > Lenovo Power.
• Tap to see the battery usage and adjust the options of the power
mode.
• Tap to see the power usage of Apps in a list.
• Tap when charging the battery to extend battery life.
• Tap to change the power mode.
• Tap and to adjust the Settings.
Use Lenovo power to save battery power and maintain device
performance.
Saving battery power