This depends on the type of light bulb that’s installed in the desk lamp. A lifespan under 30,000 hours is not ideal, while anything over 30,000 hours is common in most desk lamps. 40,000 hours and above is a great lifespan length, as this means that you can reliably use the lamp for months and even years on end without any issues. As for the lamp itself and its internal battery (if it’s a wireless lamp), again, this can vary. A high-quality desk lamp can last for several years if it’s stored in a cool, dry environment, is kept clean, and is made of a durable material. For wireless lamps, as long as you remember to charge the battery every so often, and keep it in a suitable environment when it’s not being used, it should be able to last for many months without issues. It’s crucial to do your research on a desk lamp’s durability and light bulb lifespan before buying it, as you don’t want to have to buy a new one after only a few months. You want one that is long-lasting and reliable, so you can count on it for all your task lighting needs.