Electric car battery problem summary soften repair: for example 20Ah electric motorized three-wheeled battery electric van which brand is good, 10.5V 10A discharge following one hour of electric three-wheeled truck brand, then 5A current charge, and gradually reduce the current charge to 15V after . Battery fever is a normal phenomenon. Quickly determine battery problems: 1, see. Appearance: filling drums, leak, the date of manufacture. Drum filling water, lack of acid leaks, put a long time will cure. 2, asked. Motor power, strength riding, charging habits. Motor power softening, softening riding very not easy to cure timely charge. 3, measuring. Off the grid, short plate aging. Electric car battery maintenance 7, not a long time to unlock the battery discharge, do not be turned off immediately. Greater resistance to the termination voltage, electrolyte concentration is very thin, especially the plate hole and surface almost in neutral, over-discharge resistance tend to have fever, volume expansion of electric three-wheeled truck accessories, discharge current is large obviously fever fever even deformation, when the concentration of lead sulfate is particularly large, the likelihood of survival increases short dendrites Moreover, this time lead sulfate will crystallize into larger particles, which form irreversible sulfate, will further increase the resistance Charging recovery is poor, even beyond repair. Should be used to prevent excessive battery discharge, to take "under-voltage protection" is a very effective measure. In addition, due to the electric car "under-voltage protection" is controlled by the controller, but a number of other devices such as voltmeters, lights and other electrical power controller is outside the direct supply from the battery, the power supply is generally uncontrolled control, electric lock switch is closed once began to electricity. Although the current is small, but if the discharge time of 1-2 weeks will be over-discharged. So, not a long lock, should not turn off immediately. Electric three-wheeled truck manufacturers _ White Dragon Machinery (certified) _ electric three-wheeled trucks provided by the White Dragon Machinery Co., Ltd. Shandong. 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.