Early cell phone batteries will not last long. The technology that powers modern cell phones is based on the old two-way radios used in taxis and police cars in the 1940s. The Swedish police used the first mobile phone in 1946. This phone uses radio transmission and can receive six calls before the battery runs out. The first battery used to operate the mobile phone was actually a car battery directly connected to the mobile phone, rather than a separate battery like today’s mobile phones. Most early mobile phones can only be used in cars because they require a lot of battery power.

The small battery that can be used today has not yet been invented. In addition, these early mobile phones were very large, heavy and bulky. For example, Eriksson had a mobile phone in the 1950s, weighing up to 80 pounds! By the end of the 1960s, existing mobile phones could only work in one mobile phone calling area, and once the user left the designated calling area a certain distance , It will not work. An engineer at Bell Labs developed this technology in the 1970s.

When the prototype of the first modern mobile phone appeared in 1973, it could run independently and work in multiple call areas. These phones look like the trendy little flip phones and smart phones we have today, and they can only run for 30 minutes without charging the phone battery.

In addition, these short-life batteries require a full 10 hours to charge! In contrast, today’s mobile phones can be charged through a home power outlet, car charging outlet, or even USB within a few minutes.

Over time, mobile phones have evolved and improved.

In the 1980s, mobile phones began to become more and more popular and practical, but they are still important in automobiles because of the high demand for batteries in early models. Few people can take them out of the car, so the term car phone is often used to describe these devices. Some can be carried in a briefcase and can be fitted with the large batteries needed for mobile phones.

By the 1990s, mobile phones and batteries became smaller and smaller, and the networks that run them improved. Telephone systems such as GSM, TDMA, and CDMA appeared. By 1991, digital telephone networks even appeared in the United States and Europe. These phones can be carried with you, and advances in the manufacture of small batteries and computer chips have made them heavier-weighing between 100 and 200 grams, which is the size of a brick or briefcase that weighed 20 to 80 pounds in previous years. A big improvement for the mobile phone battery.

Smart phones revolutionized modern mobile phones

Fast forward to 2018, almost everyone has a smartphone. Compared with the first generation of mobile phones in the 1950s, smartphones are similar to things in Star Trek! You can call friends, enjoy video chats, download your favorite music, send text messages, and even book dinner Order flowers and chocolates for your date at the same time. From mobile phone batteries to car batteries, batteries have also come a long way. In the past few decades, several different types of cell phone batteries have appeared.

Ni-Cd mobile phone battery

In the 1980s and 1990s, nickel-cadmium batteries or nickel-cadmium batteries were the batteries of choice. The biggest problem is that they are bulky, which makes the phone big and bulky. In addition, after you charge them a few times, they will form a so-called memory effect, and they do not always remain charged. This leads to a dead cell phone battery, which means spending more and more money to buy more phones. These batteries also have a tendency to generate heat, which can cause interference, and one of the components in the battery is cadmium, which is toxic and must be disposed of after the battery is exhausted.

NiMH baterie

The next round of mobile phone batteries, Ni-MH, also known as Ni-MH, began to be used in the late 1990s. They are non-toxic and have little effect on memory. In addition, this type of battery is thinner and lighter. In addition, they can shorten the charging time and allow users to extend the talk time before dying

Next is the lithium battery. They are still in use today. They are thinner, lighter, and have a longer lifespan. The charging time is shorter. They can be made into many different shapes and sizes to fit different styles of mobile phones, so any company can use them on their mobile devices. There is no need to worry about the memory effect, so they can be charged multiple times and are safe for the environment. However, they are much more expensive than older models of batteries.

lithiová baterie

The latest development of mobile phone batteries is the lithium polymer Icon, which has 40% higher power than the old Ni-MH battery. They are super light and have no memory impact issues leading to charging problems. However, these batteries are not yet in widespread use, and they are still quite rare.

In short, mobile phone and battery technology has made great strides in a relatively short period of time. 1. The battery protection circuit is broken or there is no protection circuit: This situation often occurs on the removable battery of the mobile phone. Many people like to buy the battery that is cheaper than the original battery, and these batteries often cut corners in order to maximize the squeeze profit. The protection circuit itself is prone to problems and battery swelling. Take the lithium battery as an example. The battery swells enough to explode.

2. Poor charger performance: battery problems caused by the charger should be the most common. In many cases, users may not care much about the choice of mobile phone charger, and often use the charger to charge. These chargers may be cheap chargers sold on the street without a complete protection circuit system, or they may be product chargers for home tablets. The charging current is more likely to be large. The occasional charging problem is not big, but if it is long Over time, it is very likely that the battery will swell.

In particular, some users like to play while charging. This mobile phone is in a high temperature environment for a long time. Continuous floating charging at high temperature will cause electrolyte reaction. Doing so for a long time will seriously affect the battery life and easily cause problems with expansion.

3. The mobile phone is not used for a long time: If the mobile phone is not used for a long time, there will be problems with the expansion of the battery. This is due to the long-term storage of the battery, the voltage drops below 2v, a chemical reaction occurs, and there is a gas drum inside the lithium battery, which is also a lot Friends often found the reason for the swelling of the mobile phone battery when disassembling the old mobile phone. So if you want to store the battery for a long time, the most reliable way is to charge it in a half-charged state regularly.

How to prevent problems

Usually we use two types of lithium batteries, lithium ion polymer and lithium batteries. The former has no electrolyte. The problem is that it swells first. Blasting the shell will catch fire and will not explode suddenly. It has a certain degree of vigilance and is safer. When we have a choice, we will try to buy these batteries.

For users, it is best to use the mobile phone to directly charge for daily charging (even if the battery is removable), and use the original charger for charging. Try to avoid using third-party chargers or universal charging (removable batteries). Don’t try to buy third-party compatible batteries cheaply (they can be removed), and try not to play large games or run applications that make your phone heat up while charging.