How long can I expect the EmotiBit battery to last?

Created by Nitin Nair, Modified on Fri, 13 Dec, 2024 at 3:51 PM by David ten Have

When using the 400mAh battery that comes with EmotiBit Essentials Kit, EmotiBit can stream + record continuously to the oscilloscope for 2.5-4 hours. You can extend the battery life to 8-9 hours of recording if a recording session is started and the WiFi is toggled OFF (no streaming to oscilloscope).

The WiFi can be toggled off either through EmotiBit by pressing the EmotiBit button or by using the oscilloscope (Wireless Off mode under power mode menu).

Users can also use the Sleep and Hibernate mode to conserve battery when not in use. We made some substantial gains in sleep mode battery savings in EmotiBit v5. Below are 2 tables showing the differences in current measurements.

Sleep Current Measurements

Feather	EmotiBit V4	EmotiBit V5
Adafruit Feather M0	6.8 mA	0.38mA
Adafruit Feather ESP32	11.6 mA	6.6mA

Hibernate Current Measurements

Feather	EmotiBit V4	EmotiBit V5
Adafruit Feather M0	0.072 mA	0.072 mA
Adafruit Feather ESP32	0.095 mA	0.095 mA

Pro Tips:

If not using the EmotiBit for short durations, you can set the EmotiBit in Sleep mode using the Oscilloscope.
If leaving EmotiBit unused for longer durations, we recommend that you toggle the hibernate switch to HIB on the EmotiBit as it cuts off all power draw and preserves battery for months!