EEC Electric Bike manufacturer introduces the precautions for charging:The 48V new battery requires charger parameters. The maximum voltage is 58.5-59.7, not less than 58V, less than 58V causes insufficient charging, and higher than 59.7V may cause the charging to not turn on the light. The lamp current is about 0.4---0.7A, and the actual voltage is about 55.5V. If it is lower than 50V, it will cause insufficient charging, and the battery will lose power for a long time.The 4820 battery requires a maximum charging current of 2.4----3.3A, which is slower than 2.2A and has a poor charging effect.The actual power of chargers lower than 30 yuan on the market is small, and the parameter design is not accurate. Please pay attention to distinguish.The failure of the charger's voltage regulator circuit will cause the output voltage of 75-130V, and the rechargeable battery will not turn on and turn on.