In the electric vehicle charging, do not pull disorderly wiring, to standardize the wiring, charging time. Charging time is too long, should be avoided in principle, shall not exceed 10 hours charging time. Try not to charge in the corridor exports or home. Why not turn light? 1. The charger current is too small, charging time is longer, the time cannot be expected to effective charge batteries, chargers not turn lights. 2. The temperature of the charge temperature (45 ℃ or higher), charging battery terminal voltage caused by short of qualified voltage, charging current always maintain in large number, cannot fall to the inflection point current value, resulting in the charger not turn lights. 3. Charger parameter Settings and battery don't match, the battery charging or owe charging for a long time, resulting in battery fluid loss, charger not turn lights. 【 overcharge, direct filtration; owe charging, after salination, "thermal runaway" water loss 】 4. Inside the battery acid quantity too much, caused by oxygen circulation inside the battery, the heat loss.