Maybe everyone has a very common concern about the battery. How long does it take for the battery to charge? Many of the friends are worried that the time is not enough, the battery power is insufficient, and the battery life may be shortened. The time is too long, which may damage the phone and battery. So how long should it be charged? Let me introduce you to a simple calculation method:
Generally, the battery capacity is indicated on the battery, in milliamperes. The larger the value, the larger the capacity.
For example: 1200mAh means that the battery capacity is 1200 mAh. At the same time, the charger is also generally marked with a charging current, also in milliamps.
Thus, the battery charging time can be calculated simply by dividing the battery capacity by the charging current and multiplying by a factor of 1.2 (or 1.1) in hours. For example: battery capacity is 1200 mAh, charger charging current is 600 mA, charging time is (1200 mA / 600 mA) × 1.2 = 2.4 hours, then the charging time of this battery using this charger is 2.4 hours.
The above calculation method does not apply to new batteries. Generally speaking, when the new battery is charged three times before, especially the nickel-cadmium battery and the nickel-hydrogen battery, the standard charging is about 15 hours (0.1C), so that the battery life can reach a maximum. In the future, the battery charging time can be calculated by referring to the above method.
What is the charging current indicated on the charger?
Can give you a simple formula: charge and discharge time (minutes) = capacity * 1.1 / current (mA) * 60
The relationship between the battery charging time and the charging current is the battery capacity divided by the charging current to obtain the charging time. Considering the loss during charging, the calculated charging time is multiplied by a constant of 1.1 or 1.2.
According to the logo, you can calculate an approximate time. If it is a normal charger and the current is small, the charging time must be very long.