Briefly describe the internal resistance and life of nickel-metal hydride batteries and lithium batteries

Internal resistance of nickel-metal hydride batteries and lithium-ion batteries The internal resistance of a battery refers to the resistance encountered when current flows inside the battery. The internal resistance of the rechargeable battery is very small, and a more accurate result can be measured with a special instrument. The commonly known internal resistance of a battery is the internal resistance of the charged state, even if the internal resistance of the battery is fully charged (corresponding to the internal resistance of the discharged state, it refers to the internal resistance of the battery after fully discharged. Generally speaking, the internal resistance of the discharged state is more than The internal resistance in the charged state is large and not very stable). The greater the internal resistance of the battery, the more energy the battery consumes, and the lower the efficiency of the battery. A battery with a large internal resistance generates a lot of heat during charging, causing the battery's temperature to rise sharply. The impact on the battery and the charger is great. With the increase in the number of times the battery is used, the internal resistance of the battery will increase to varying degrees due to the consumption of the electrolyte and the decrease in the activity of the internal chemical substances in the battery. The lower the quality of the battery, the faster the rise. Cycle life of Ni-MH battery and Li-ion battery Cycle life is the number of times the battery can be repeatedly charged and discharged. The battery life and capacity are in an inverse relationship. Generally, the cycle life of a nickel-hydrogen battery can reach more than 500 times. The life of a high-capacity battery is shorter, but it can reach more than 200 times. The cycle life is also closely related to the charging and discharging conditions. Generally, the larger the charging current (the faster the charging speed), the shorter the cycle life. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of the advantages of rare earth batteries