I have this portable rechargeable battery pack for charging smartphones. It is 5V, 2.4A, and 5000mAh. I would like to use it to power a wireless mouse that normally requires 2 AAA batteries, which is 3V and I'm not sure what is the A and mAh. I made a voltage divider that involves a 220Ω resistor and a 330Ω resistor so that it outputs 3V, though I don't know what the current is. However, when I connected it to the mouse, the mouse didn't turn on. Can somebody let me know what is the issue with this circuit?
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