How to undervolt Nexus 7?

Want to increase Google Nexus 7 battery life? Undervolt Nexus 7 NVIDIA Tegra 3 Super 4-PLUS-1 Quad Core CPU is one of the ways to do so. Besides Nexus 7 7″ HD WXGA IPS screen, Tegra 3 Quad Core CPU is another big battery eater. Undervolting helps to reduce Nexus 7 battery usage, and will make Nexus 7 cooler (generate less heat) too. Unlike underclock which may not be so efficient in performance / walt ratio. Undervolt surely will improve battery life because it maintains the overall performance speed while lower the battery usage. As usual, you need to install custom kernel for Nexus 7 in order to undervolt. Stock Nexus 7 kernel does not support it.

Undervolt Nexus 7

How to undervolt Google Nexus 7?

  1. Install Nexus 7 custom kernel that support undervolt.
  2. Install SetCPU.
  3. At Voltages tab, select the desire value for each speed stages.
  4. Note – try to reduce 25 mV each time.
  5. Click Apply then.
  6. Run Stress test ~ Stress CPU to test stability (located at Info tab).
  7. That’s all.

Note – Only check ‘Set on Boot’ when you are confident that the undervolted values won’t hang and stable all the time.

Each Nexus 7 has its own CPU chipset stability. Other people’s SetCPU voltages settings may not work for you. Therefore, you need to try lot of the settings until you get the lowest voltages and stable for daily use.


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