The simple conclusion is that for the vast majority of electric masturbators, it is not recommended to use them whilst they are charging.
Common charging methods for masturbators on the market include USB-C, Micro USB, magnetic charging and DC round-pin charging. Although they may appear to be ordinary small electronic devices, unlike mobile phones, they come into direct contact with sensitive parts of the body during use and are frequently exposed to lubricants, residual moisture and ambient humidity.
Many people wonder: since USB only operates at 5V, isn’t it far safer than domestic mains electricity? Why, then, is it dangerous?
It is true that the low voltage of a pure USB output poses far fewer risks than domestic AC power, but this does not mean there are no safety concerns whatsoever. The risks stem from these four main areas:
1. The charging plug connected to the mains: The build quality of the charger, the effectiveness of its insulation and the quality of its leakage protection all directly affect safety during use.
2. Damp environments alter electrical conductivity: Sweat, residual water stains or lubricant coming into contact with the charging port can compromise the original insulation protection.
3. Dual circuit load: When the motor is running whilst charging, the current load increases, leading to higher internal heat generation and placing greater strain on the protection circuitry.
4. Damage to the seal caused by tugging: Tugging or swinging the charging cable during use can easily wear down the waterproof rubber seals and magnetic contacts, compromising the device’s water resistance.
The FDA has also issued safety recommendations for rechargeable personal medical devices: it is essential to use original or officially approved charging accessories, as non-compliant accessories can easily cause overheating, sparks or even fires; ensure the device and charging accessories are completely dry before connecting to the power supply. Although these regulations are not specifically aimed at adult toys, they are highly relevant for all rechargeable personal devices.
Aside from electrical safety, does using the device whilst charging also cause wear and tear on the battery and motor?
The answer is yes, and this is a relatively common issue encountered in practical use. Most small electric sex toys are designed to operate for a short period on a fully charged built-in lithium battery, rather than to support continuous operation whilst plugged in. If the motor is kept running during charging, the device’s interior will simultaneously accumulate heat generated by the charging process, the discharge load, and the mechanical heat from the motor’s operation, thereby accelerating component ageing.
Safe Charging and Standard Usage Procedures
To minimise usage risks, please follow these guidelines:
- It is recommended to complete charging the day before, or 1–2 hours before use.
- Use the original manufacturer’s cable or charging accessories that meet the manufacturer’s approved specifications.
- Before connecting to the power supply, be sure to check the device body, charging port and magnetic contacts to ensure they are completely dry and free from moisture.
- Place the device in a well-ventilated, dry location where it can be easily monitored whilst charging.
- Unplug the charging cable once the battery is fully charged to avoid leaving it on the charger overnight.
- Before use, double-check that the charging cable has been fully disconnected.
- Clean the device thoroughly after use and allow it to dry completely before storing it away.
If the battery consistently runs out partway through use, avoid using the device whilst it is charging; a better approach is to adjust your charging habits, or to choose a model with longer battery life, a replaceable inner liner and better heat dissipation.
Using an electric masturbator whilst it is charging does not necessarily mean an electric shock will occur every time, but this behaviour brings together numerous hazardous factors: an external power source, a damp environment, charging cables, battery heat, a running motor, and direct human contact. Should any one of these elements fail, the overall risk increases dramatically.
Therefore, the safest rule of thumb is simple: fully charge the device, unplug the charging cable, and then begin use. If the device is prone to running out of power mid-use, plan your charging time in advance; under no circumstances should you put your own safety at risk to test the limits.
