Power Bank mAh Calculator
The result is calculated based on the rated capacity(mAh) of a power bank. The real capacity might be different. Read more about rated vs real power bank capacity
How to use the power bank mAh calculator
Worried about choosing the right power bank for your phone? Our calculator will help you find the most appropriate power bank according to your requirements. This calculator is designed to show exactly how many times a power bank with specific capacity (1000 mAh, 2000 mAh, 5000 mAh, etc) can charge your specific phone model. Enter the model of your phone and capacity of a power bank in the forms as shown in the figures.
Step 1: Input your phone model in the first field. The calculator will find it in our database.
Step 2: From the second field, use the dropdown box in order to choose the desired capacity you’d like your ideal power bank to have
Step 3: The calculator will automatically show exactly how many times a power bank with the selected capacity will charge your smartphone. Furthermore, you will be able to see
What does mAh actually mean?
mAh is the abbreviation of milliampere-hour. It is the unit of electric charge and commonly used to express the capacity of the small batteries. It is an indication of the current capacity of the battery (different from energy capacity which includes voltage). The mAh relates to how much current a battery can provide for an hour. If it says 1400 mAh, it can supply 1400 mA or 1.4 A for an hour, 700 mA for two hours, 350 mA for four hours, etc. Generally, more mAh means that the battery will have a longer life or capacity. Read more about mAh and batteries here.
Understand real battery capacity
The listed capacity is the value that the manufacturer claims for the design of that battery, whereas the real capacity is a property of that battery at a given moment in time and conditions. The real/actual capacity of a battery varies from rated capacity because of manufacturing tolerances. It decreases with consumption, and also depends upon temperature and discharge rate. Read more about listed vs real battery capacity.
Know your power banks’ Wh (Watt-hours)
Watt-hour is the battery’s capacity that could deliver the specified energy for an hour and then drain it out, but if the battery delivers more energy, the discharge time decreases. It is generally used to describe and specify the electrical consumption of a battery. For example, if the battery is rated at 100Wh, it means the battery could distribute 100watts (i.e. 12v*8.33A) for an hour, but if the battery draws 16 A (i.e. 192 watts), it could only distribute half of its energy. When looking at batteries and power banks you sometimes see the battery capacity specified in Wh (Watt-hours) and sometimes in mAh (milliamp hours).
Milliamp hours relate only to the accessible charge, regardless of the cell’s voltage. A device with a greater value of mAh will have a longer life. It also gives you an idea of how long a device will run from a specific battery. We use this unit for describing the capacity of a battery having a fixed voltage.
A Watt-hour is a measure of energy stored in a battery. It is the voltage (V) provided by the battery, multiplied by current (amps) that a battery can provide for a certain time (usually in hours). A battery of 200 watt-hour means that it can deliver 200-watt power for one hour.
It is very important to know Wh of your power bank to know if you can take it on flights. Power banks under 100Wh are not allowed on planes and can get confiscated at check-in. In this article, all the new TSA and FAS regulations are specified in detail. Make sure to understand all the rules and regulation to avoid any possible problems and enjoy a stress-free trip.