5 reasons why the phone battery has a short life

Most people use their smartphones all day. However, even without much use, there are very few phones with enough battery capacity from morning to midnight.

With current flagship models that cost thousands of dollars or more, users always think that manufacturers will find ways to make smart phones with enough battery capacity for all. day. However, most new phones have the same battery life as previous versions.

Here are the reasons why electric batteries cannot last all day without having to be recharged.

1. Electricity consumption is increasing

Readers may already know how the battery works. But why doesn't the battery life improve?

The most obvious reason is simply that they consume more power. Take the Samsung Note line for example. This phone often scores in the eyes of users thanks to its 'terrible' battery life. However, there has been little change in battery life since the first Galaxy Note was released.

In 2011, Samsung released the first Galaxy Note with a battery capacity of 2500mAh. This battery life may last about one day depending on use. The latest version of the phone line, Galaxy Note 9, has a battery capacity of 4000mAh. Theoretically, that means users have 60% more battery capacity to use, but that's not true in practice.

Galaxy Note 9 is equipped with a larger and brighter AMOLED screen, higher resolution. Note 9 also has a much faster processor, stronger graphics and more RAM. Larger screens also put greater pressure on battery life.

In addition, the phone also runs more applications than ever before in the background. Although these underground applications help users receive timely notifications and photos are automatically synced to the cloud service, it also means that devices will continue to consume power.

In addition, all additional connection forms may be running on the phone at any time. 3G, LTE, WiFi, Bluetooth and NFC all consume batteries quickly throughout the day.

The manufacturer has added many energy saving features on the phone. Some devices have adjustable screen resolutions. However, there is no doubt that the more powerful a device, the more power it will use.

2. The phone is getting thinner and thinner

Smart phones are also getting thinner and thinner over time. The first iPhone was released in 2007, 0.46 inches thick (about 1.2cm). On the other hand, Apple's latest flagship, iPhone XS, has reduced the thickness by about 40%, which means only 0.30inch (0.8cm).

Although the slimmer appearance makes the smartphone more beautiful, easy to hold and pocket, but the area inside the phone is also shrinking. Therefore, manufacturers put into batteries of smaller sizes.

Most flagships have a battery life of 2800mAh to 4000mAh. The top smartphone with the largest battery life launched in 2018 is Huawei Mate 20 Pro (with a battery capacity of 4200mAh). However, it is important to note that the Mate 20 Pro is up to 6.5 inches (16.5cm) in size.

There are still phones with a battery life of over 5000mAh. However, they are all thicker and bigger than a regular flagship. In a time when aesthetics are really important to consumers, smartphone manufacturers will not be interested in introducing thick phones.

3. Backup charger and charging speed

Another reason the phone has a short battery life is that manufacturers have no incentive to increase the battery capacity for smartphones.

Today, many devices focus on charging speed and wireless charging function instead of battery capacity. Phone charging much faster than before. Some top devices are fully charged within an hour. In addition, the wireless charging feature is also becoming faster and more popular in the market.

Therefore, instead of including batteries with larger capacities, companies can boost additional devices to improve the charging experience. For example, Apple fast charger does not come with products that are sold separately. Apple also sells battery cases (back-up batteries and backup batteries) that help extend the iPhone battery life.

On the other hand, Samsung also sells wireless chargers that work with its line of devices.

4. Decline over time

If you own a smartphone for more than two years, you probably already know that the lithium-ion battery will eventually decline. Although they are rechargeable, they only retain maximum capacity in certain cycles.

Smartphone batteries can remain in their original state for 1 to 3 years depending on use.

On old phones, users can easily remove the back cover and buy replacement batteries from the manufacturer or from a third party. Now, users have to go directly to the manufacturer to change the battery. This causes cost in both time and money.

5. The battery development has lagged behind

Battery technology is a very slow development process. The lithium-ion technology used for decades is improving, but not as quickly as what users expect. The battery still tends to wear out over time and the capacity still depends on the size as before.

With the popularity of smartphones, as well as electric cars and smart devices that can be carried on people, battery technology needs to be improved as soon as possible. Researchers have created many improvements and potential alternatives over the years. Companies also spend millions of dollars trying to fix this problem.

A radical improvement in battery technology in the near future is not something too far away. Currently, before buying a device, always remember to consider its battery life.