Service life of the battery electric vehicle is a chemical substance, and thus also a certain service life, such as a dry battery (including ordinary alkaline batteries), and other primary battery is not charged, the service life of course only once. For rechargeable batteries, usually measured by the number of times we have to charge the length of their service life. Cycle life of nickel-cadmium batteries can be charged in about 300 to 700 times the number of three-wheeled electric vehicles, nickel-metal hydride battery is generally 400 to 1000 times wheeled electric car brand, lithium-ion battery is 500 to 800 times. The service life of the rechargeable battery is not only affected by raw materials, production processes and other factors used in the production of batteries, but also with the battery charge and discharge method and the actual usage closely. For example, someone in 1985 using six nickel-cadmium batteries, has continued to use the three-wheeled electric car with a roof, but the battery capacity is somewhat reduced. It seems brand wheeled electric car, as long as the use of reasonable methods, rechargeable batteries can be achieved even more dramatically than the nominal service life. Charging an electric car, new car purchases, due to the factory, transportation, storage will take some time, it may make the battery power is low, please charge before use. 2. Check the charge of the rated input voltage and supply voltage are the same. 3, the battery can be charged directly in the car, but you must turn off the power switch, you can also come to the right place to remove the charge indoors. 4, first charging electrical output of the plug and socket connection after charging the battery properly (see figure), and then plug the charger connected to 220V AC power. (Note: Do not connect the charger to correct the negative output) 5, then the power indicator on the charger and charging red light, indicating that the power is switched on. Brand wheeled electric vehicles _ White Dragon Machinery (certified) _ wheeled electric car provided by the White Dragon Shandong Machinery Co. White Dragon Shandong Machinery Co., Ltd. (www.bailonggrp.com) Shandong Linyi, bicycles, tricycles and accessories leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the White Dragon machinery leadership with the staff warmly welcome all inquiries negotiations to create a better future for White Dragon machinery.