June 26, 20181. Be sure to learn input voltage range of your power adapter. World's universal AC100 - 240V voltage input is best, so as to avoid that your computer can not be used abroad.2. Be sure to know the out...view
June 26, 2018Charging process1. The LED on the circuit board does not light when the power is not connected2. If power is connected to the circuit board, the green LED is on, and the circuit board waits for the li...view
August 1, 2018A 21v charger is judged by the battery voltage level, so how does the 21v charger automatically detect the battery voltage during charging? For example, to detect the battery voltage, we need to open ...view
August 1, 2018This article provides an overview of battery charging methods and modern battery technology to give readers a better understanding of the batteries used in portable devices. The chemical properties of...view
December 25, 2017UL has announced that since June 20th, 2019, audio and video products, IT products and telecommunication products have to apply for UL certification of the new one UL62368-1 instead of the EN60950-1 a...view
August 1, 2018Li ion secondary batteries are now mainly oriented towards power batteries, which have great advantages over NI-H batteries. The li ion battery can be charged and discharged quickly with the highest c...view