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Charging battery charging time

Perhaps everyone has a common concern about batteries, which is how long it takes to fully charge them? Many friends are worried about not having enough time, insufficient battery power, and the possibility of shortening battery life; If the time is too long, it may also damage the phone and battery. So how long should it take to charge? Here is a simple calculation method for everyone:

Generally, the capacity of a battery is indicated on the battery, in milliamperes. The larger the value, the greater the capacity.

How long it takes for a battery to fully charge depends on its nominal capacity. The larger the capacity, the longer the charging time required; Secondly, it depends on how many batteries you charge simultaneously. The charging time for two and four batteries is different, and charging two batteries is twice as fast as charging four batteries; Thirdly, it depends on the current output of your charger. If the current is high, it will be fast, and if the current is low, it will be slow; Fourthly, it depends on whether your battery has any remaining power. If it is completely out of charge, the charging time will be longer. If there is still remaining power, the charging time will be shorter. There is a formula for charging nickel hydrogen batteries: battery capacity (milliampere hours)÷ Charging current (milliampere) x 1.2~1.5=time required for the battery to fully charge (in hours). Due to different chargers, the charging current also varies. The charging time is generally indicated in the instruction manual of the charger. To fully charge four 2300mAh batteries, standard charging takes 10-20 hours, fast charging takes 6-8 hours, and fast charging takes 1-2 hours.

Nowadays, better chargers have an automatic detection function, which automatically stops charging when the battery is fully charged. When charging, the battery is warm, but after stopping for a period of time after charging, the battery will cool down. The full charge indicator varies depending on the charger, with some indicating that the indicator light flashes during charging and remains on when fully charged; Some have indicator lights that stay on during charging and turn off when fully charged; Some indicate that the indicator light is red (or green) when charging, and turns green (or red) when fully charged.

Charging time of nickel hydrogen batteries

The calculation method for the charging time of nickel hydrogen batteries is to divide the battery capacity by the charging current, and then multiply it by a coefficient of 1.2 (or 1.1). The time unit is in hours.

Steps/Methods

The battery capacity is divided by the charging current, and then multiplied by a coefficient of 1.2 (or 1.1). The time unit is in hours.

For example, if the capacity of a certain nickel hydrogen battery is 1200mA, the charging current of the charger is 600mA, and the charging time is (1200mA/600mA) x 1.2=2.4 hours, then the charging time of this nickel hydrogen battery using this charger is 2.4 hours.

The relationship between charging time and charging current of nickel hydrogen batteries is obtained by dividing the battery capacity by the charging current to obtain the charging time. Considering the losses during the charging process, the calculated charging time is then multiplied by a constant of 1.1 or 1.2.

Based on the identification, you can calculate an approximate time. If it is a regular charger and the current is very small, the charging time will definitely be long.

The above calculation method is not applicable to new batteries. Generally speaking, when charging a new battery for the first three times, especially for nickel cadmium batteries and nickel hydrogen batteries, the standard charging time is around 15 hours (0.1C), in order to maximize the battery's usage time. In the future, you can refer to the above method to calculate the battery charging time.

How to calculate the charging time of a rechargeable battery

Generally, the capacity of a battery is indicated on the battery, in milliamperes. The larger the value, the greater the capacity.

For example, 1200mAh means that the capacity of the battery is 1200mAh. Meanwhile, chargers are generally labeled with charging current, also measured in milliamperes.

In this way, the length of battery charging time can be simply calculated as follows: the battery capacity divided by the charging current, multiplied by a coefficient of 1.2 (or 1.1), and the time unit is in hours. For example, if the battery capacity is 1200mA, the charging current of the charger is 600mA, and the charging time is (1200mA/600mA) x 1.2=2.4 hours, then the charging time for this battery using this charger is 2.4 hours.

The above calculation method is not applicable to new batteries. Generally speaking, when charging a new battery for the first three times, especially for nickel cadmium batteries and nickel hydrogen batteries, the standard charging time is around 15 hours (0.1C), in order to maximize the battery's usage time. In the future, you can refer to the above method to calculate the battery charging time.

What is the charging current indicated on the charger?

I can give you a simple formula: charge and discharge time (minutes)=capacity * 1.1/current (mA) * 60

The relationship between battery charging time and charging current is obtained by dividing the battery capacity by the charging current to obtain the charging time. Considering the losses during the charging process, the calculated charging time is then multiplied by a constant of 1.1 or 1.2.

Based on the identification, you can calculate an approximate time. If it is a regular charger and the current is very small, the charging time will definitely be long.

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