High-power RF devices, such as cellular modems, do consume more power, because the signal must reach a tower hundreds of meters distant.
Likely, you'd not be able to measure the difference in battery usage with any type of RF mouse. That is probably between 1/100 and 1/10,000 the power used by the CPU alone. The Bluetooth specifications show maximum power allowed is 100 mW, and when operating short-range (1 m), the power used might be 1 mW.
However, both those RF devices use little power compared to the laptop CPU, SSD or HHD, RAM and LCD backlight. However, if you've actually turned off Bluetooth communication, then there would be little difference in power used between an external USB RF dongle and the internal Bluetooth device. If Bluetooth is turned on anyway, then your laptop is powering two RF devices, so using just Bluetooth would be somewhat more efficient. I think the result will be no more than 5 minutes.Ĭonsider that the USB mouse has to power an extra transmitter. You can take the power of the battery and the number of hours, substitute and estimate the number of seconds for your case. (The result may not be exactly the same, but the ratio of the values will be similar.) А laptop with a bluetooth mouse will run 26-50 seconds longer than wired mouse А laptop without a mouse will run 30-60 seconds longer. The 2 hower * 0,4% is approximately 30 seconds (0,1 watt) or 60 seconds 0,2 watt mouse. See: 0,1 watt of 24 watt is 0,4% of total power. It's mean that a notebook power is 24 watt.
Typically a laptop 15`` has a 48 W*h battery and 2 hower of work. Totally mouse power can not be less then 0,1 watt.Ī wired mouse power typically 0,1 - 0,2 Watt.Īll ok, the wired mouse is more powerfull then bluetooth module (separettly). I think the controller power can be ignored. The wire mouse is - 1.controller + 2.camera + 3.led. The WT12-A-AI5 (I found the datasheet) current is 31,5mA (Data transmitted 115200bps) * 3,6v.
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