Lithium ion use condition limit

1）Lithium-ion batteries are perform differently in hot and cold conditions.

Lithium-ion batteries used in terminal equipment can be used in the range of 0 to 35 degrees, 16 to 25 degrees is the ideal operating temperature range, and can be stored in the range of -20 to 45 degrees under certain restrictions.

"Charging or storing in a high temperature environment may permanently damage the battery capacity and further accelerate battery life degradation, resulting in a rapid reduction in standby time. When the temperature exceeds the recommended temperature range, the phone software can detect and limit the battery charge, or even stop charging. When the ambient temperature is further increased, our mobile phone software will prompt you to exceed the operating temperature and shut down when necessary. If you continue to increase the battery's operating temperature, it may cause battery performance degradation or even swelling. In addition, if you use high-power applications such as games and videos in a high-temperature environment, the battery temperature will be higher than the ambient temperature, and the phone will be more likely to trigger high-temperature protection.
When using the device at low temperatures, you may find that the battery life is shortened. This is the characteristic of all lithium-ion batteries at low temperatures, but this phenomenon is temporary, when the battery temperature returns to the normal range, Performance will also return to normal. Of course, our equipment software strictly limits the charging in low temperature environment to protect the battery safety, especially below 0°C. Our equipment will prohibit charging, so please make sure that the equipment is above 0 degree when charging. If the temperature is further reduced below -20 degrees, the software may also be shut down when necessary.
The above are the functions and features of HUAWEI's genuine battery. If you replace your battery with a non-genuine battery or repair it at a non-HUAWEI authorized service center, you may lose these functions and features. Therefore, please select HUAWEI Authorized Service Center to replace in order to replace your battery with a genuine HUAWEI product."

2）Charging speed.

Some of HUAWEI's products support the fast charge function. The batteries, terminal devices, adapters and data cables with fast charge function are matched. If any one is replaced with a non-fast charge function, it may cause loss of fast charge function. And if the replacement is a product that is not approved by HUAWEI, it may also cause safety problems. For batteries and terminal devices with fast charge function, during the charging process, the initial charge is half an hour, the power rises rapidly, and then gradually converts to slow charge, and the charge current will gradually decrease as the charge is increased. The duration of charging may vary depending on the settings and charging device. And when the battery exceeds the ideal operating temperature range, the charging time will be adjusted and extended.

3）Battery capacity.

The battery life and the capacity of the battery itself, the ambient temperature of the battery, the terminal settings and the application opening are closely related. The capacity value of the lithium-ion battery will gradually decrease with the increase of the number of times of charging; the ambient temperature of the battery will also affect the battery life, especially in the low temperature environment, the battery life is very fast; the setting of the terminal equipment The application opening situation will affect the power consumption of the terminal device. For example, if the brightness of the device screen is too bright or the application is too much in the background, the power consumption will be increased and the battery life will be shortened.

• Maintain a suitable temperature
  Avoid low temperature and high temperature conditions
• Turn on automatic brightness
  Avoid excessive screen brightness
• Close idle app
  Avoid unnecessary power consumption

4）Battery life.

Battery life is a measure of battery performance and longevity, which can be quantified in several ways: as run time on a full charge, as estimated by a manufacturer in milliampere hours, or as the number of charge cycles until the end of useful life.
All rechargeable batteries are consumables, and as battery life increases, battery performance will decrease. The amount of power that the battery can store is called the battery capacity. The battery capacity is at the beginning of use, that is, the new battery stage is the maximum capacity. As the battery life increases, the battery capacity that the battery can store gradually decreases. This is the battery life problem.
The life of the battery is not only the passage of time, but also affected by different factors, such as the number of charging cycles and the way the battery is maintained. Therefore, the battery performance can be improved and the battery life can be extended in a certain way. For example, when the terminal device is stored for a long time, Maintain half the power while avoiding the storage of terminal equipment and batteries or charging in high temperature environments, including long exposure to the sun and so on.

5）The battery's "resistance" ability.

At present, most of HUAWEI's terminal devices use non-removable lithium-ion batteries, which is the same as most terminal manufacturers in the industry. The reason for this choice and design is to make full use of the high energy density characteristics of lithium-ion batteries to provide longer standby time for terminal devices and to lighter the sense of handshake. The lithium-ion batteries in the current terminal equipment are mostly thinner and lighter polymer lithium-ion batteries. This polymer lithium-ion battery is stripped of the thick metal protective outer coat of the conventional lithium-ion battery, and is light, soft and insulated. Composite outerwear, this composite material reduces weight and takes up less space, but requires special protection and avoids strong or sharp external impact, so polymer lithium-ion batteries are often designed as non-removable batteries integrated with the terminal equipment. If the integrated design of the terminal equipment is repaired and damaged by non-professionals or non-HUAWEI authorized service centers, it may cause accidental injury to the battery, or even be replaced by a counterfeit product that has not been officially certified, and the security risk increases sharply.