The filling method of a direct-injection lighter‌ involves several basic steps, including letting off the excess gas inside, shaking the filling can to even out the gas, aligning the nozzle of the filling can with the filling hole of the lighter, pressing the filling can firmly until the gas is full, leaving the lighter for a few minutes to allow the temperature to rise, and then adjusting the flame size to ensure normal use.

Failure of a straight-in lighter to ignite may be caused by a variety of reasons. Here are some possible causes and their solutions

There are obvious differences between direct-injection lighters and windproof lighters in terms of use environment, functional features and structural design. Which type of lighter to choose mainly depends on personal use needs and scenarios.