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Most modern mobile devices use lithium-ion batteries, which consist of two main parts: a pair of electrodes and the electrolyte between them.
Lithium-ion is the most common form of battery because it can store the most energy in the smallest space. That's measured in terms of specific energy density, which refers to how much energy, in Watt-hours, a kilogram of battery could hold. Lithium-ion can be between 150 and 250 Wh/kg, while a nickel metal hydride battery can hold about 100 Wh/kg. In other words, lithium-ion batteries are smaller and lighter than different types, meaning smaller devices with longer battery life.
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What is a battery capacity?
The energy a battery can store over time is measured in milliampere-hours (or mAh), the capacity unit. For example, a battery with a 1000 mAh rating could supply 1000 milliamps of power for an hour. A 500-milliamp device should have a battery life of around two hours.
However, since a device's power consumption varies depending on what it is doing, the battery life of a machine is a little more complicated than that. The device will use more energy if the screen is on, the radio is transmitting, and the processor is active than if the screen is off and the radio and processor are idle.
What is mAh?
mAh means "milliampere hour," which refers to the amount of charge a mobile phone battery can deliver. Each phone has a mAh value assigned, which is calculated based on average usage. This can be used to estimate the number of hours of battery life. However, it is essential to note that how long your phone battery can last will vary based on your phone use.
What affects your phone battery life?
The factors that affect a smartphone's battery life include usage, age, and temperature. The capacity of your battery significantly impacts how long it can last—size matters when it comes to having the best phone battery life. Not every smartphone has the same battery capacity or charging speed. A mobile phone can go between charges for a more extended time the higher its mAh capacity. Look for smartphones with the most mAh, such as the Samsung Galaxy S22 Ultra, Samsung Galaxy A52 and A52s, and Samsung Galaxy Z Fold4, if you want the device with the most extended battery life.
Phones with best battery life
| Model | Battery capacity | Prices |
| Galaxy S22 Ultra | 5000 mAh | Starting from AED 4,699 |
| Galaxy A53 | 5000 mAh | Starting from AED 1,549 |
| Galaxy A33 | 5000 mAh | Starting from AED 1,249 |
| Galaxy S21 FE | 4500 mAh | Starting from AED 2,699 |
| Galaxy S22+ | 4500 mAh | Starting from AED 3,799 |
| Galaxy Z Fold3 | 4400 mAh | Starting from AED 6,799 |
| Galaxy Z Fold4 | 4400 mAh | Starting from AED 6,799 |
| Galaxy S22 | 3700 mAh | Starting from AED 3,199 |
| Galaxy Z Flip4 | 3700 mAh | Starting from AED 3,799 |
| Galaxy Z Flip3 | 3300 mAh | Starting from AED 3,799 |
FAQ
How does a mobile battery work?
A charge is produced at the positive current collector by the movement of the lithium ions, which releases free electrons in the anode. The electrical current then travels from the positive current collector to the negative current collector after passing through a powered device (such as a computer or cell phone).
What makes the battery last?
Reduce screen brightness for one of the simplest ways to extend battery life. Although lowering the brightness seems like a no-brainer, studies have shown that it does make a difference.
How many types of mobile batteries are there?
Modern cell phones and smartphones use two different types of batteries: lithium polymer and lithium-ion. The newest and most sophisticated battery used in contemporary smartphones and mobile devices is called Li-Poly.
What is the best type of battery?
With the highest energy density of any battery cell, lithium batteries are made of this incredibly light metal. As a result, they have a higher energy capacity than alkaline batteries or any other single-use battery of a similar size. Additionally, they perform admirably in both hot and cold temperatures.
Why is my phone battery draining so fast?
Your phone's battery life will depend on how you use it. The most important thing to remember is that the battery life of smartphones typically decreases over time. Even if you are not actively using them, your battery is likely to drain faster if you have a lot of open applications. Close any available applications as soon as you are finished using them because they can continue to use battery power in the background. When your phone is hot, your battery also discharges much more quickly. If your phone heats up frequently, you can look at our What to do when your phone heats guide.