Rated battery capacity of C, units of Ah (Ah) is the discharge to a stream (A) and the discharge time (h) of the product. Because the same cell with different parameters of discharge is different Ah derived to describe the Laptop battery capacity to measure and compare it easier, you have to pre-established uniform conditions. In practice, the battery capacity is defined as follows: A series of current to the battery discharge voltage to the specified number of power set. Can also be said that the battery capacity is: a set of current to the battery discharge voltage at the time and find out the current product.
To coordinate a uniform conditions, especially battery structure according to different characteristics and uses, the number of relief, the common, 20 hours, 10 hours, if the ratio of electric vehicle battery 2 hours discounted what is written is C20, C10, and C2, where C set followed on behalf of the battery capacity, a digital representation of such cells in a certain intensity to the current-voltage discharge in the number of hours. As a result, the ability to reach out with the number of hours nominal discharge. In other words, while the flow rate are the same capacity of the various batteries, they are far away from a nominal discharge. For example, an electric bicycle battery capacity of 10 Ah, relief for 2 hours, what is written 10Ah2, it’s rated discharge current of 10 (Ah) / 2 (h) = 5A, while a car to start the battery capacity 54AH, rated discharge rate for 20 hours which is written in 54Ah20, the discharge currently only 54 (Ah) / 20 (h) = 2.7! For a perspective, these two batteries used in 5A, and 2.7A, if the current discharge, you should be able to separate for 2 hours and 20 hours before she was set to the voltage.
The voltage is the so-called set-off voltage (unit V). Termination voltage can be understood simply as follows: when the battery voltage drops to the discharge does not cause harm to a minimum. Termination voltage is not fixed, and it increases the discharge current decreases, should be higher with a larger battery discharge current, voltage termination may be lower, and vice versa. Enable In other words, high-current discharge sony VGP-BPS2A battery voltage drops to a lower value, while causing little actual relief for the No, or damage.
Batteries in the work of the current is also often used to enlarge what is written NCh represented. N is a multiple of C the capacity of the security on behalf of the number of hours said, h, the discharge is the number of hours. Here, h values are connected only as a reminder of the battery tailor the type of discharge, there is a precise description of the battery when the rate when the magnification is often read in the form of NC, without the written standard. Multiples of N by the capacitance C multiplied by the current equivalent to A. For example, 20Ah battery vote with 0.5C discharge, 0.5 × 20 = 10A. Start From another perspective, for example: a motor vehicle sony VGP-BPS2 battery capacity 54AH, measured the output current of 5.4 A, then it is to vote at this time of the discharge N = 5.4 / 54 = 0.1C