1, portable stereo charging, turn off the stereo, see if the power indicator becomes green or stop flashing, if it becomes green or stops flashing, generally indicates that the battery is fully charged.
2, in addition, the general audio charging time of 6-8 hours can be fully charged, only need to pay attention to the charging time can be judged. In addition also to use a multimeter to measure the voltage at both ends of the battery, if it is equal to the standard voltage of the battery has been fully charged.
3, "Manlong" is a U.S. audio brand, specializing in the manufacture of outdoor mobile audio, widely used in outdoor performances, guitar playing, square dancing, indoor and outdoor meetings, etc. "Manlong" brand in 2015, "Manlong" brand in the United States. Manlong" brand landed in China in 2015, and authorized Guangzhou Zhuoer Electronics Co. Our company is a set of research and development, production, sales, service in one of the professional audio enterprises, the company's business throughout the country and the world many developed countries and regions.