The relations of external battery and the battery life



1. Types of external battery

An external battery is a battery that can be externally connected to a device to power the device. Typically, they are designed as portable chargers and can support many different types of devices.




There are many types of external battery, the most common being lithium ion batteries and polymer batteries. The lifepo4 battery is more popular and widely used because they are lightweight and adaptable. Polymer batteries, on the other hand, are relatively new and have a higher safety rating and longer life.

2. Advantages and disadvantages of external battery

The merits lie in:

  • Portable and easy to use
  • Small size
  • Powers a wide range of devices
  • Repeated loading is possible

You don't have to worry about running out of power on your phone or tablet when you travel with an external battery, and the external battery can also be used as a backup power source in case of an emergency.

Advantages and disadvantages of external battery


Although external battery have many advantages, they still have some disadvantages. First, external battery cause some harm to the environment. Secondly, they may have the risk of excessive discharge, which may have an impact on the device if used for a long time.

3. Selection and use of external battery

Using an external battery is very simple. Generally, you only need to connect the external battery to the device to be charged via USB or other cable, make sure the battery is charged, and start charging the device immediately.

● The right choice

When choosing an external battery, it's a good idea to first determine which devices you need it for, and then determine how much power and battery hookup are required for different devices. In addition, it is also necessary to pay attention to factors such as the brand, model and cost performance of the external battery.

Selection and use of external battery


● Tips for use

When using an external battery, you should pay attention to the following skills. First, select the adapter, cable and power level according to the power requirements of the equipment. Second, avoid using excessive discharge for a long time to avoid affecting the life of the equipment. And third, avoid the external battery operating poorly in high temperature, humidity, vibration and other environments.

4. External and built-in batteries

In the face of built-in batteries and supporting batteries, many people often wonder, what exactly is a built-in battery? What is an external battery? What is the difference between an external battery and a built-in battery?

What is the difference between the specific external battery and the built-in battery, and can the built-in battery and the built-in battery be used at the same time, then take a look below.

● Built-in battery

The built-in battery, the non-removable battery, is connected to the mobile phone motherboard via cable. Many mobile phones now use built-in batteries, because the built-in battery can achieve an integrated body, which allows hands and can avoid the phone looking more compact after use. Hit damage was received during the process, resulting in poor battery contact.

● The difference between the two

The biggest difference between built-in and external is that one's battery is inside the UPS and the other is outside the UPS. The built-in battery is integrated with the UPS, because the general UPS is relatively small, the battery capacity installed in it is generally very small, and the battery pack can rarely be expanded.

The external battery, as the name suggests, is on the outside, not integrated with UPS. Generally, it will have an independent battery cabinet, and the UPS power of the external battery is generally relatively large.

External and internal batteries


Its battery pack can suitably compete for the capacity of the battery pack according to the power supply time, or increase the number of battery packs to achieve the purpose of extending the power supply. The battery mentioned here generally refers to the battery.

5. Can external and built-in battery be used at the same time

Many people choose to remove and store the laptop battery for battery protection when the laptop is connected to an external power supply. Not removing the battery when connected to an external power supply is equivalent to charging the battery, shortening battery life.

Is this statement correct? Can the external battery and built-in battery be used at the same time? When plugged in, the notebook is not actually running on battery power and does not consume battery power. If the battery is low, it will also be charged.

From another point of view, this reduces the number of cycles of battery charging and discharging. For lithium batteries, the number of charge and discharge cycles is its life. Plugging in the power supply when using the notebook also extends battery life to some extent. So it can be used at the same time.

● Apple MagSafe external battery

On July 14, 2021, a new product, MagSafe external battery, was launched on the Apple store. It is a double-stranded lithium ion battery pack. The back is a MagSafe magnetic charging module, which can provide up to 15W magnetic wireless charging, and has a fast charging input interface, which is a magnetic wireless charging treasure tailored.

● Exterior design

Apple MagSafe external battery includes a rectangular design that matches the shape of the iPhone, which can provide additional power. Apple only introduced a white MagSafe external battery, which has an Apple logo. The back has a rounded exterior, while the front is flat with MagSafe indentation. There is a built-in Lightning port for charging the MagSafe external battery.

Can they be used at the same time


● Charging speed

Apple MagSafe external battery charges the iPhone 12 model with 5W of power when out and about, and Apple limits the charging speed due to concerns about heating up and extending battery life.

● Battery capacity

No details have been provided on how much extra battery life MagSafe external battery get. Relatively speaking, wireless charging is not efficient, part of the battery capacity will be lost, and the charging capacity may change due to temperature conditions. As a rough estimate, the battery can provide a full charge for the phone.

● Reverse charging

The MagSafe external battery has a reverse wireless charging function. This means that if you charge your iPhone, the MagSafe external battery will also be charged at the same time. Please note that it is recommended to use a power adapter of 20W or higher for charging, and when the MagSafe external battery is plugged in, it needs to charge the iPhone with 15W of power.

● Check the charging status

The MagSafe battery level can be viewed in the battery widget, and the battery level of the battery case is displayed along with the iPhone, Apple Watch, AirPods, and other connected accessories.

● Thermal and charge control

There is a built-in charge management function designed to help keep the battery healthy when the battery compartment is connected to power for a long time. Apple says it may get hot while charging. If this happens, the software may limit charging by more than 80% to extend battery life. If this happens, it is recommended to place it in a cooler place, as when the temperature drops, it will be recharged.

6. Conclusion

External battery have many benefits. It is a dual USB output interface that can charge two mobile phones or digital devices at the same time. It is also equipped with high capacity lithium polymer cells, which are durable and have a high number of charge and discharge cycles. Intelligent control, intelligent microcomputer monitoring and display of electricity. Automatic sleep in a non-working state to prevent power loss.


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