Power consumption

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Default battery levels and thresholds values
Level Voltage Status Usual duration
0 <3500 mV Auto-shutdown
1 3500-3550 mV Critical 30 minutes
2 3550-3700 mV Empty 2 hours
3 3700-3900 mV Half 8 hours
4 >3900 mV Full 8 hours

Here is a typical voltage evolution during battery discharge (with no sound and no backlight):

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Gamebuino consumes about 20mA with backlight, 18mA without and 11mA in power down mode.