batteryclub 2020年8月11日 0 Comments
charging time

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 […]

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batteryclub 2020年5月9日 0 Comments

Misconception of battery self-discharge

Self-Discharging After Charging Some friends say that the battery voltage drops rapidly after charging, indicating that self-discharging is too fast. The reason is that the charging voltage is higher than the actual battery voltage due to the polarization of the battery during charging. Voltage Drop Process After Charging-This is the battery voltage process from the […]

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