First, the rechargeable LED table lamp
1, the battery is damaged, no electricity, and it is not charged.
2, charging line failure
3, the lamp is turned on when charging, causing the LED to burn out
Second, only use the battery LED table lamp
1, the printed circuit seems to be intact, but there are invisible breaks
2, the battery is dead or unable to supply power (such as poor contact)
3, because the current is too large (the manufacturer wants the lamp to be brighter, the LED current design is too large, resulting in greatly shortened LED life, this situation often has the process of LED darkening to no light), resulting in LED burnout.