This video shows how to charge a rechargeable LED desk lamp. USB LED lamp charging tutorial. How to charge USB desk lamp.
Here are four steps
Step 1: check out when you need to charge the led lamp
Step 2: Turn off your led lamp
Step 3: Charge your lamp with a USB connector
Step 4: Wait for the lamp to be fully charged
It might take a while or a few hours for a battery on the led lamp to be fully recharged. To know more about this info, you might check your lamp’s battery capacity and apply a formula of “ battery size divided by charger output power.
For example: my lamp battery is 1400 mah , my charger output is 1000 mah
Therefore, time of charging will be: 1400 divided by 1000 equal to 1. 4 hours
One fully charged led lamp can be able to used in around 4 to 6 hours.
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