Battery capacity = relative capacity × voltage
The relative capacity of a 288 Wh 48 V battery is therefore 6 amp-hours.
If you are sure to ask how many amperes, you need to do a little popular science:
Ampere is the unit of current = voltage ÷ resistance
> And batteries are usually only marked by voltage and capacity, some are marked by maximum operating current.
With the maximum operating current marked, the battery output current can be adjusted between 0 and maximum (depending on impedance, etc.).
How many V is in a laptop battery?
1. A tool to check laptop battery information: firstly, the battery information provides the manufacturer of laptop batteries; , this software It can also detect ID, production date, composition chimical, the number of charges, design parameters, standard voltage, current voltage, design capacity, full capacity, current capacity, discharge time, battery capacity, status, power status, etc. .
2. Check the battery parameters directly.
The specifications behind “Rating:” indicate volts, milliamp-hours and the most important parameters in watt-hours. The discharge voltage of standard 18650 lithium battery is 3.6V-3.7V, 10.8/3.6=3.3 in series. The total capacity is 48Wh=10.8*4.4*m, m=1. It is therefore a lithium battery with 3 cells connected in series. Note: Cells can be connected in series or parallel, series voltage is accumulated and parallel current is accumulated.
There are voltage 3.7V, 10.8V, 14.8V, etc.
The 18650 battery cell used in computersLaptops typically have a capacity of 2200 mAh (milliampere-hours), which can be interpreted as: powered by a voltage of 3.7 V and a current of 2200 mA, it can be used for 1 hour.
There are also those marked 10.8 V, that is, a voltage drop occurs in a single cell, resulting in a reduction in the total voltage. Most popular netbooks on the market now have batteries meeting this specification. There are two situations for four-cell batteries: four in series and two in series and two in parallel. The last marked parameters of the four batteries connected in series are as follows: The output current remains unchanged at 2200 mAh when connected in series.
Detailed information:
Laptop computers are the same as ordinary electrical appliances, the input voltage is 220 V. The tenOutput voltage is automatically converted via the AC adapter. The voltage of the laptop's power adapter is between 11-19V. It is best to use the power adapter with the voltage specified on the laptop.
When the laptop battery is charged, it is first charged quickly in constant current mode, and then charged slowly in voltage mode constant after the voltage reaches a certain value. Usually, laptops do not have strict constant current charging monitoring devices. The charging current ranges from 0.70 to 1.70 A.
Baidu Encyclopedia – Laptop Battery