Car Battery Voltage

If the battery of a car battery exceeds the end voltage value of the battery discharge during the discharge process, it may cause the internal pressure of the battery to increase when the battery continues to discharge, and the reversibility of the positive and negative active materials is damaged, resulting in a significant capacity of the car battery. cut back. Over charge: When the battery is being charged, if it continues to charge after it reaches a full state, it may cause the battery internal pressure to increase, battery deformation, liquid leakage, etc., and the battery performance will also be significantly reduced and damaged. Energy density: Energy released by the average unit volume or mass of a battery. In general, the energy density of lithium-ion batteries is 2.5 times that of nickel-cadmium batteries and 1.8 times that of nickel-metal hydride batteries at the same volume. Therefore, under the same battery capacity, lithium-ion batteries will have a higher energy density than nickel-cadmium and nickel-hydrogen batteries. Smaller size and lighter weight.

Self discharge: Whether the battery is in use or not, it will cause a loss of power due to various reasons. If calculated on a monthly basis, the self-discharge of lithium-ion batteries is about 1%-2%, and the self-discharge of nickel-metal hydride batteries is about 3%-5%. Cycle life: When the rechargeable battery is repeatedly charged and discharged, the battery capacity will gradually decrease to 60%-80% of the initial capacity. Memory effect: In the process of battery charging and discharging, many small bubbles will be generated on the battery plate. Over time, these bubbles will reduce the area of the battery plate and also indirectly affect the battery capacity.