Battery capacity(cell capacity), as the name suggests, is the capacity of the battery in yourpower bank , in ampere-hours (Ah) or millimeter Ampere-hour (mAh).
The cell capacity of 10,000 mAh polymer battery refers to the length * width * thickness * energy coefficient of the polymer battery of the power bank ≈ 10,000. The rated capacity is the output capacity of the mobile power specified by the manufacturer, expressed in C, and the unit is ampere-hour (Ah) or milliampere-hour (mAh).
Many factors affect battery capacity, mainly the following:
1. The effect of temperature on battery capacity: The capacity of lead-acid batteries decreases with increasing discharge. rate, that is, it is said that the higher the discharge current, the lower the calculated capacity of the battery.
2. The impact of temperature on battery capacity: Temperature has a greater impact on the capacity of lead-acid batteries. Generally, as the temperature decreases, the capacity decreases.
What does the rated capacity and battery cell capacity of a power bank mean?
A. If the nominal voltage (V) and nominal capacity (Ah) of the battery are known, the nominal energy value can be obtained by calculation:
Wh= V x Ah
By example: a 11.55 V 3.55 Ah lithium battery, the nominal energy is 11.55 × 3.55 = 42 Wh; Generally speaking, the rated voltage and rated capacity will be marked on the battery.
B. If the battery is only marked in milliamp-hours (mAh), you can divide the value by 1000 to get the amp-hours (Ah).
For example: the nominal voltage of the battery is 11 V, the nominal capacity is 4800 mAh and its nominal energyale is:
4800 mAh ÷ 1000 = 4.8 Ah
11 V × 4.8 Ah = 52.8 Wh
2. If the 12V lithium battery only displays mAh (milliamp-hours), you can divide the value by 1000 to get the amp-hour (Ah). For example, the rated voltage of a lithium battery is 3.7V, the rated capacity is 3000mAh, and its rated energy is:
3000mAh÷1000=3Ah
3.7V×3Ah= 11.1 Wh
What does the nominal capacity of an external battery mean?
The capacity of the battery (capacity of the cells ), as the name suggests, is the battery capacity of your power bank, in amp-hours (Ah) or milliamp-hours (mAh).
The cell capacity of 10,000 mAh polymer battery refers to the length * width * thickness * energy coefficient of the polymer battery of the power bank ≈ 10,000.
Rated capacity is the output capacity of the mobile power supply specified by the manufacturer, expressed in C, and the unit is ampere-hour (Ah) or milliampere-hour (mAh).
The rated capacity is Under laboratory conditions, the external battery tested has a guaranteed minimum output capacity of 2A or 1A. Under normal circumstances, the higher the rated capacity, the higher the effective energy of the power bank.
Detailed information:
1. The effect of temperature on battery capacity: The capacity of lead acid batteries decreases with increasing discharge rate, i.e. the discharge current is large , the smaller the battery capacity.
2. The impact of temperature on battery capacity: Temperature has a greater impact on the capacity of lead-acid batteries. Generally, asthe temperature decreases, the capacity decreases.
3. The impact of termination voltage on battery capacity: When the battery discharges to a certain voltage value, the voltage drops sharply. In fact, the energy obtained is very low, so the discharge must be completed at. A certain voltage value. , the cutoff discharge voltage is called the end of discharge voltage. Adjusting the end-of-discharge voltage is of great importance to prolong battery life.
2. Precautions for using external batteries:
1. The lifespan of each battery is in fact constant, determined by its number of charge cycles, which is generally 400 to 600 times. Improper usage habits, such as overcharging, overdischarging, high temperature storage, etc., will cause irreversible damage to the battery, shorten its lifespan, and sometimes may cause pour security.
2. Save energy reasonably by closing idle programs, use every drop of energy wisely, and do more meaningful things with limited energy.
Baidu Encyclopedia - Battery Capacity
Baidu Encyclopedia - Rated Capacity
Power BankRated capacity< strong> refers to the capacity that can be used to charge other devices. For example, a power bank is rated at 10,000 mAh, but it can actually only supply 8,000 mAh. The 10,000 mAh refers to the battery cell capacity and the 8,000 mAh is the rated capacity.
Rated capacity is tested under laboratory conditions. The minimum guaranteed capacity that a power bank can produce at 2A or 1A current is the rated capacity. Under normal circumstances, the higher the rated capacity, the higher theEffective energy of the power bank is higher and the more power the power bank can charge.
When purchasing an external battery, the nominal capacity is an important reference. The rated capacity determines how long the mobile power can be used. But for power banks, bigger isn't always better, as many places have issued regulations limiting the transportation of large-capacity power banks. If the capacity is too large, it may not be possible to transport them on planes, subways and other means of transportation. transportation, so when purchasing, you must make your own purchasing decisions based on their needs.