Context: High-power LEDs (HP-LEDs) or high-output LEDs (HO-LEDs) can be driven at currents from hundreds of mA to more than an ampere, compared with the tens of mA for other LEDs. Some can emit over a thousand lumens. LED power densities up to 300 W/cm2 have been achieved. Since overheating is destructive, the HP-LEDs must be mounted on a heat sink to allow for heat dissipation. If the heat from a HP-LED is not removed, the device will fail in seconds. One HP-LED can often replace an incandescent bulb in a flashlight, or be set in an array to form a powerful LED lamp.

Question: How many lumens can some high-power LEDs emit?
Answer: over a thousand

Question: Up to how many densities have been achieved with LED power?
Answer: 300 W/cm2

Question: Why must High-power LEDs be mounted on a heat sink?
Answer: to allow for heat dissipation

Question: What will happen if the heat from a high-power LED is not removed?
Answer: the device will fail in seconds

Question: What can one high-power LED replace?
Answer: incandescent bulb in a flashlight

Question:  How many lumens can some low-power LEDs emit?
Answer: Unanswerable

Question:  Up to how many densities have never been achieved with LED power?
Answer: Unanswerable

Question:  Why must High-power LEDs be mounted on a heat rise?
Answer: Unanswerable

Question: What will happen if the heat from a low-power LED is not removed?
Answer: Unanswerable

Question:  What can one low-power LED replace?
Answer: Unanswerable