Calculation of battery charging among cellphone、tablet and Notebook
In theory, charging time = battery capacity/charging current. But there is something different in real. The charging current is practically lower than charger’s current. For example, your tablet capacity is 4200mAh, and the charger’s output is 5v 2A. On the other hand, manual says 7h to full charge. And charging time is 4.2/2A=2.1h? That is […]
Recent Comments