Lithium manganese dioxide battery is a disposable battery that uses lithium as the anode, manganese dioxide as the cathode, and uses organic electrolyte. The main features of this battery are high battery voltage, with a nominal voltage of 3V (twice that of ordinary alkaline batteries); a termination discharge voltage of 2 V; a stable and reliable discharge voltage; Excellent storage performance (storage life more than 3 years), low self-discharge rate (annual self-discharge rate ≤ 2%), operating temperature range -20°C to +60°C;
Cell phones are now very common. Some of them are nickel-metal hydride batteries, but smart phones are lithium-ion batteries. Proper use of lithium-ion batteries is very important to extend battery life. Lithium-ion batteries are currentare the most commonly used lithium batteries. They can be made into rectangular, cylindrical, rectangular and button-type dishes according to the requirements of different electronic products, and there are battery packs composed of multiple batteries connected in series. The nominal voltage of lithium-ion batteries is 3.6 V (some products are 3.7 V). The terminating charge voltage when fully charged is related to the battery's anode material: the anode material is 4.2V for graphite; the anode material is 4.1V for coke. The internal resistance of different anode materials is also different. The internal resistance of the coke anode is slightly larger, and its discharge curve is also slightly different, as shown in Figure 1. Generally called 4.1V lithium ion battery and 4.2V lithium ion battery. Most of those used today are 4.2 V and the tetermination discharge voltage of lithium-ion batteries is 2.5V~2.75V (the battery factory gives the operating voltage range or termination voltage, and each parameter is slightly different). Continuing to discharge below the final discharge voltage is called over-discharging, and over-discharging will damage the battery.