It's not uncommon to encounter oil leaks or condensation from cartridges. This not only affects the user experience but may also lead to the mistaken impression of a product defect. Below, I'll share some practical tips to help you easily address these issues.

I. Analysis of the Causes of Oil Spill Phenomena

1. Vibration during transportation: During logistics handling, e-liquid cartridges may experience multiple jolts, potentially causing e-liquid leakage. However, this is typically a one-time occurrence and can be resolved by simply wiping the cartridge with a tissue before reuse. 

2. Production quality defects: In rare cases, certain batches of products may have manufacturing defects resulting in persistent oil leakage. In such instances, please contact after-sales service for replacement.

3. Environmental factors: Variations in atmospheric pressure, particularly differences in altitude, can disrupt the internal pressure equilibrium of the cartridge, thereby increasing the likelihood of oil leakage. This is not a product quality issue and therefore falls outside the warranty coverage.

4. Long-term storage: Unused cartridges may experience oil leakage over extended periods. To prevent this, it is recommended to open new cartridges before use and ensure their usage period does not exceed two weeks.

5. High-temperature environment: High temperatures can cause e-liquid to expand, increasing the risk of leakage. Therefore, avoid placing cartridges in high-temperature environments, such as inside vehicles exposed to direct sunlight.

II. Methods for Dealing with Oil Spill Incidents

1. Check the condition of the e-liquid

①Add or replace e-liquid

Ensure the e-liquid level in the atomization chamber is no less than one-third; insufficient e-liquid may cause dry burning of the atomizer core, resulting in a burnt odor.

If the e-liquid is depleted, excessively viscous, or expired and deteriorated (e.g., with turbid color or sediment), it should be replaced promptly with fresh e-liquid. For disposable e-cigarettes, exceeding the labeled draw capacity (e.g., 500 draws but actually used 600 draws) may result in a burnt odor due to e-liquid depletion, necessitating immediate device replacement.

② Adjust the e-liquid type

When using candy-flavored e-liquids, their high sugar content is more likely to cause carbon buildup in the atomizer core. It is recommended to switch to refreshing flavor options (e.g., mint or fruit flavors) to reduce the risk of burnt taste.

2. Replace the atomization core

Replace aged components regularly. The service life of an atomization core typically ranges from 7 to 15 days. If the core turns black, exceeds half a month of use, or emits persistent burnt odor during suction, replace it with a new one.

Usage instructions for the new atomizer core: After installation, allow it to rest for 3–5 minutes. Before first use, exhale the initial ten puffs of vapor (to avoid inhaling incompletely atomized e-liquid).

3. Adjust Usage Habits

Control the suction frequency and pressure to avoid continuous rapid suction (each session should not exceed 3 seconds), with a minimum interval of 30 seconds to allow the coil to cool and prevent overheating-induced carbonization.

Drawing force: Inhale gently to avoid excessive force that may cause rapid inhalation of e-liquid.

4. Equipment Maintenance and Fault Diagnosis

Clean the condensate regularly by using a cotton swab to remove condensate inside the cartridge (particularly at the electrode area) to prevent liquid accumulation from impairing oil conduction. Remove the cartridge during charging to avoid circuit short circuits or overheating damage.

5. Handling of Abnormal Situations:

If a burnt odor is accompanied by oil leakage, reduced smoke output, or abnormal heating of the device, it may indicate a circuit fault or damage to the atomization core; immediate shutdown and contact with after-sales service are required. If a burnt smell from the circuit is detected, there may be a risk of short circuit, necessitating direct replacement of the device.