Calculate battery charging time: This calculation makes it work

Most people own at least one device that runs on battery power and needs to be charged all the time. If you want to know the exact charging time, it is possible with a simple calculation. We'll show you how.

Thankfully, calculating battery charging time doesn't require complicated math.

Rechargeable batteries and chargers are available very cheaply. Their purchase is worth much more than buying non-rechargeable batteries - and that already the environment.

Calculate battery charging time: Here's how

For the calculation of the battery charging time, only two specifications are necessary:

• The charging current indicates at what rate / in what quantity the battery is charged.
• The capacity of the battery describes when it is fully charged.

From this, the calculation arises all by itself: Capacity / charging current = charging time.For this, a practical example:

• A smartphone with a battery capacity of 2,300 mAh should be fully charged.
• The charging current of the power supply is 1.5 A, so 1,500 mA.

The solution is quite simple: 2,300 mAh / 1,500 mA = 1.533 h = 1 hour 32 minutes (0.533 x 60 minutes).This result is quite realistic and can be quickly checked in everyday life. You can use the same principle to calculate all other load times as long as you know the two decisive values.Still looking? Then you can find the best batteries that the market currently has to offer here on Computerbild.