Maybe the battery is broken, maybe it's shorted from moisture inside, it's hard to tell. You can turn on the switch while charging. If the light is on, the battery is broken. ; If the light is not on, it means the connection between the bulb and the battery is shorted or broken.
Battery refers to a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate electric current. This is a device that can convert chemical energy into chemical energy. electric energy. It has positive and negative poles.
With the advancement of technology, batteries generally refer to small devices that can produce electricity. Like solar cells. Battery performance parameters include mainipally the electromotive force, capacitance, specific energy and resistance.
Using the battery as a power source can achieve stable voltage, stable current, stable power supply for a long time and little influence from the outside world. The battery structure is simple, easy to carry. charging and discharging operations are simple and easy. They are not affected by external climate and temperature, have stable and reliable performance, and play a great role in all aspects of modern social life.
If your rechargeable desk lamp is not very high-end, the charging circuit inside should be a resistor-capacitor power supply. This is a simple and inexpensive step-down power supply with poor voltage stabilization performance. .
Usually, the charging voltage is slightly higher than the rated voltage of the battery, whichexceeds the permitted voltage range of the LED. The quality of general finished lamps is not very good, and the high voltage resistance is. very bad, so the plug-in When the device is turned on, the LED may be broken and shorted, and the light will not turn on.
The simplest method: replace all the bulbs with new ones, but this requires some practical skills and some basic circuit knowledge. If you don't have these two points, you can only do this. replace them with new ones.