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Index Word Description
0 Header code [0x00040000]


Index Word Description
0 Header code
1 Result code
2 u8 value


Returns a number which can be used to calculate the voltage using Vref * (value / 256) where Vref seems to be 5.0v.

When the charger is plugged into a fully charged old3DS, the value will be around 0xD1 (~4.1v)

Unplugging the charger will make the value go down to 0xCE (~4v)

The voltage at 5% battery percentage just after the LEDs start flashing is 0xAF (~3.4v)

Plugging in the charger at this point will make the voltage go up to 0xB9 (~3.6v)