CR2025 battery: C- wherein lithium metal as the anode, manganese dioxide as the cathode chemistry battery system, R- represents a cylindrical shape of the battery, if it is a square then replace F, 20 represents the battery has a diameter of 20mm, 25 denotes a battery has a thickness of 2.5mm. The nominal voltage of 3.0V, the endpoint voltage (end point voltage) is 2.0V ,, a rated capacity of 140-170mAh range. With the new requirements of the industry, there are special improved battery, its capacity will be very different, mainly to improve its high current output capability, as applied to flashing lights or RF products. Other memory function or power protection module, electronic scales, calculators, electronic dictionaries and other products used in the battery on the computer motherboard CMOS battery; the shape of New Zealand type batteries, button batteries, button batteries. Notes 1, read the instruction manual before using or consult the factory, in order to understand how to use the correct battery; 2, according to electrical indication of the battery is loaded correctly the positive and negative electrical appliances; 3, prohibits new and old batteries or different type, model mix batteries; 4, prohibiting disposable battery; 5, prohibit heating or disassemble the battery, not the battery into water, fire; 6, Do not short circuit to prevent battery explosion, overnight, or cause Other hazards; 7, if found to have abnormal battery conditions, deformation, please stop immediately; 8, the child is not easy to reach the battery into place; 9, if the battery overnight, and accidentally into the eyes, immediately rinse with water, plot In severe cases, see a doctor; 10, electrical long-term use, should remove the battery from the appliance in a dry, cool place; Tips stacked batteries do not explode can cause a short circuit. Batteries are strong pollutants attention to environmental protection. Battery saved the best environment for the next 21 ° C-26 ° C in a dry environment.