Electric car fault diagnosis are the following nine direction: 3) How to Detect A brushless motor and the motor harness plug unplug all with a multimeter diode file, the multimeter red needle means six-pin plug on the motor thin red line, black? Needle refers to electric tricycle price, the value is displayed as 900 or more in fine yellow, blue, green and black lines, the red needle means black line refers to the fine needle black yellow, blue, green and red, numerical display 500 -600. Display zero or infinity is bad. The B-energized state, with a multimeter 200 volt DC voltage profile, black six-pin connector pin means thin black line, refer to the fine red needles yellow, blue, green line, turn the motor manned electric tricycle price, voltage display varies between 0-6.25 volts. Maximum and minimum three wires should be less. 4) How to detect turn to? 20 volts with a multimeter to measure the voltage profile controller nine-pin plug, black pen means thin black line, red pen refers to the fine yellow line, then the voltage should be about 1 volt, will be transferred to the turn in the end, a multimeter display volts to 4.2 volts or 4.8 volts, then turn to be good. Electric car fault diagnosis are the following nine direction: 7) Under what circumstances should it replace battery battery problems many reasons, but in addition to drum kits, "off the powder," off the grid plate, short circuit, shell damage, etc., but? generally without replacement, as long as you can continue to use the service. Bulge is due to excessive battery charging, the battery has been deformed drum kit, consumers can feel touch; casing damage can also be visual. "Off the powder," off the grid plate and short circuit, you need to open the battery before we can see if these two grounds maintenance contractors to propose to replace the roof with electric tricycle price, consumers can make service providers on the spot to open the battery checked. The so-called trade-only plus point repair solution 8) how to identify old batteries? Welded joints to see whether or used at the scene, we can see the shell is clean up the goods price electric tricycle, old batteries refurbished, always leaves traces used . Also, check to be traded when the new battery new battery packaging, better check yourself before unpacking. In front of the electric car repair, we must understand clearly the electric car batteries, motors and the corresponding parts of the model, must be checked at the end of maintenance. Small electric tricycle price, the price of electric tricycle, White Dragon White Dragon machinery provided by Shandong Machinery Limited. White Dragon Shandong Machinery Co., Ltd. (www.bailonggrp.com) strong, credible, Shandong Linyi bicycles, tricycles and accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the White Dragon machinery and you hand into the brilliant, for a better future!