# Online Calculator For Calculating The Time To Charge The Battery

## Video: Online Calculator For Calculating The Time To Charge The Battery

• Effective online calculator
• How long do you need to charge the rechargeable batteries after purchase?

How long does it take to charge a phone, laptop or other equipment that uses rechargeable batteries? You want to know, but this can be calculated very quickly and simply with an online calculator. How long does it take to charge the battery? The capacity of the battery is measured in milliamperes per hour, its manufacturers write on the product case, and the charger also contains data on the generation of current according to this device (Ml.a). If you divide the capacity by the charging current, you get the time in hours. But this is still an inconclusive result, because you need to take into account the efficiency of the device, that is, multiply the result of division by 1.4.

The calculation of battery charging will look like this: T = 1.4 C / I. Here are indicators of charging time, capacity and charger current. In practice, these data may differ by 20 percent, because the charging time of rechargeable batteries depends on the quality of the products, correct formatting and the ambient temperature.

The easiest way is to use a device with automatic control, but in this case, recharging with a slow current can occur, therefore you do not need to leave the battery on the charger after a full charge.

Each such product has its own lifetime, which is determined by the number of recharge cycles. This value depends on the type of battery. Therefore, if you constantly underload the device, you can significantly reduce the operating time of the product. To keep it intact and use it for a long time, it is necessary to make the correct calculation of the charging time for batteries.

## Effective online calculator

 Battery capacity mAh Charging current mAh Charging time (hour)

Calculators from wpcalc.com

The question is how many hours you need to charge the rechargeable batteries, there is a logical and simple answer. Thanks to a simple formula for calculating the result, you can get the necessary data in a few seconds. To do this, enter the parameters of the battery capacity and the charger current into the table. Press the button "calculate" and accept the ready answer.

Attention: the obtained value must be multiplied by a factor greater than 1, because part of the energy goes into heat and is lost, especially at temperatures below zero. When calculating the charging time for nickel batteries, a percentage of 1.4 is appropriate.

The battery discharge voltage should not be less than 0.9V regardless of the discharge current. Most devices automatically detect the threshold.

You can interrupt the charge, but the total value should not be less than the calculated one. During the charge, the body of the device may heat up, the maximum temperature is 55 degrees. In this case, the device switches from the main charging mode to the precharging one. The temperature drops and the process is renewed.

## How long do you need to charge the rechargeable batteries after purchase?

When buying a new device, the charging is carried out in half, and therefore the first three times it is necessary to completely discharge the device, until it is completely turned off, and then charge at full power for about 12 hours, following the enclosed instructions from the manufacturer. The battery is fully charged in 3-4 hours, and then it is recharged with a slow current to the full limit. After three full recharging cycles, the device enters the operating mode, and there is no need to wait for its complete discharge or charge.

Online calculation of the battery charging time on our website will help you very quickly get the desired result, which will tell each user how much to charge the batteries so that they function smoothly for a long time.

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