1. No response when pressing the power button; the device fails to turn on at all. What could be the reason? 

The issue may stem from the following causes. Troubleshoot step by step:

- Battery issue: If the built-in battery is removable, check if it is properly installed (ensure positive and negative poles are aligned); if the battery (battery pack) has been idle without charging for a long time, it may enter protection mode due to over-discharge. Connect the charger to activate and charge for 30 minutes before attempting to power on again.

- Contact failure: Inspect the contact points between the battery and the device body for dust or ink residue. Clean with alcohol wipes—poor contact will disrupt the circuit.

- Hardware failure: If the device still fails to turn on after replacing with a fully charged battery and cleaning the contact points, the motor or control board may be damaged. Contact customer service for after-sales inspection.  

 

2. The device shuts down automatically frequently or powers off suddenly after turning on. How to resolve this?

Such issues are mostly related to power supply stability. Solutions are as follows:

- Battery level: First check the battery level—low power may trigger the device's protection mechanism to shut down automatically.

- Overload protection activation: If the device shuts down during high-voltage operation (e.g., above 10V) or high-resistance tasks (e.g., shading on thick skin or using extra-stiff integrated needles), the motor may have triggered overload protection. Reduce the voltage or replace with a more suitable tattoo needle (e.g., switch to soft-membrane needles) to reduce load.  

 

3. The battery fails to charge or charges extremely slowly. What points should be checked?

Troubleshoot step by step along the charging chain to quickly identify the issue:

- Charging accessory issue: Ensure the charger and data cable are original—third-party accessories may cause charging failures due to mismatched power; check for damage to the data cable and blockages in the charging port (clean with a toothpick wrapped in alcohol wipes).

- Battery and device status: If the indicator light does not illuminate during charging, try replacing the battery to rule out aging; if the device is hot after intense use, let it cool to room temperature before charging—high temperature triggers charging protection. ---  

 

4. Weak needle force and intermittent lines. How to adjust?

- Mechanical component inspection: First check if the integrated needle is stuck—remove the needle, clean residual ink inside, and ensure the needle path is unobstructed; then check if the connection between the eccentric wheel and motor is loose—tighten the fixing screws to restore power transmission.

- Parameter and load adaptation: Verify if the voltage setting is too low—increase the voltage appropriately to compensate for load pressure.  

 

5. Excessive noise and vibration during operation, causing uncomfortable grip. How to handle? 

Noise and vibration mostly result from component coordination issues. Effectively alleviate with the following methods:

- Component tightening and lubrication: Check if all device screws are loose (especially motor fixing screws) and tighten with a wrench; apply special lubricating oil to moving parts such as the motor shaft (once every 1-2 months) to reduce mechanical friction noise.

- Integrated needle and voltage adaptation: Severely worn integrated needles increase operational resistance and vibration—replace with new needles promptly; excessively high voltage causes the motor to run at overspeed, generating noise. Gradually reduce the voltage to the range where noise is minimized while performance remains sufficient.  

 

6. The device suddenly overheats (even becomes scalding) during operation. Is there a safety hazard? How to resolve?

Overheating not only affects operational experience but also shortens device lifespan.

Address immediately: - Immediate measures: Stop operation and disconnect the battery immediately to prevent motor damage from high temperature; place the device in a well-ventilated area to cool—do not disassemble or pour water on it while overheated.

- Root cause investigation and resolution: If overheating occurs after continuous operation for more than 2 hours, stop and rest for 10 minutes every hour to avoid prolonged high-load motor operation; if overheating happens within normal operating time, check if the voltage is too high (above 10V easily causes overheating) or if the motor is aging (replace the motor if accompanied by abnormal noise during operation).

- Environment and load optimization: Avoid using the device in high-temperature and humid environments—enhance ventilation when ambient temperature exceeds 30℃; for thick skin or large-area tattoo work, operate in sections to reduce single-operation load.  

 

7. How to restore the battery pen to factory settings？

In the powered-on state, press and hold the power button for more than 10 seconds until the screen lights up again, then release. The software factory reset will be completed.  

 

8. How to check the battery pen's version and manufacturing date？ 

In the powered-on state, press and hold both the power button and the "+" button for more than 5 seconds. The screen will display version information (for 5 seconds) before automatically returning to the normal interface. ---  

 

9. Battery life is much shorter than when new—drains quickly after full charge. Is the battery broken?

Battery life degradation requires first distinguishing between battery aging and usage habit issues:

- Battery aging judgment: If the device has been used for more than 1 year or charged over 300 times, it is likely that the lithium battery has aged (capacity degradation)—replace with an original battery; observe battery life via the device timer—aging is basically confirmed if life is reduced by more than 50% compared to a new battery.

- Usage habit optimization: High voltage settings (above 10V), frequent on/off cycles, and low-temperature environments (below 10℃) accelerate power consumption.

- Charging and maintenance suggestions: Avoid charging the battery only after it is fully depleted—charge when 20% power remains; disconnect immediately after full charge—long-term storage at full charge accelerates aging.  

 

10. The battery shows full charge but drains quickly during operation. What's the issue?

This situation is mostly due to "false charge" or contact issues. Solutions are as follows:

- Battery calibration and activation: Perform one "full charge-discharge cycle" (charge fully, use until automatic shutdown, then charge fully again) to fix capacity display deviations for some lithium batteries; for long-idle batteries, charge continuously for 12 hours to activate cell activity.

- Contact and load inspection: Clean the metal contact plates between the battery and device—oxidation reduces power supply efficiency, resulting in insufficient power despite showing full charge; check if the motor has stalling risks—excessive resistance causes sudden surge in instantaneous power consumption, leading to false power drain.

- Charger compatibility confirmation: Non-original chargers may cause incomplete charging—battery shows full charge but actual capacity is insufficient. Replace with the brand's original charger.  

 

11. The battery dies during on-site work. Are there emergency solutions? Handle sudden power outages with the following methods to ensure work continuity:

- Backup preparation: Carry 1-2 fully charged original spare batteries daily—battery replacement takes only 30 seconds to resume work.

- Emergency power supply: If the device supports RCA wired connection, carry a portable power adapter and connect directly via RCA cable for simultaneous charging and use.

- Low-power optimization: When the battery shows 10% remaining power, reduce the voltage to 6-7V—use only to finish the current line to avoid sudden shutdown from forced high-load operation. ---  

 

12. How to clean and disinfect the device after it gets contaminated with ink or blood? Which parts cannot get wet? 

Cleaning and disinfection must balance thoroughness and device safety:

- Safe cleaning process: First remove the integrated needle; wipe the device surface with 75% medical alcohol wipes, focusing on ink residue on the grip and needle interface; for removable metal parts (e.g., handle), clean in an ultrasonic cleaner (with neutral detergent) for 5 minutes, then rinse with purified water and dry.

- Water-prohibited parts: The motor compartment, battery compartment, and circuit board interface must never get wet—cover with dry wipes during cleaning; wipe the display screen gently with alcohol wipes to avoid damage from excessive pressure.

- Deep disinfection: Perform deep disinfection once a month—soak the handle in medical-grade disinfectant for 10 minutes (test compatibility with a small area first to avoid device damage); wipe the exterior of the battery pack with 75% medical alcohol wipes, then irradiate with an ultraviolet disinfection lamp for 30 minutes.  

 

13. How to store a tattoo battery pen that is not in use for a long time to avoid damage? 

The core of long-term storage is protecting the battery and preventing component aging:

- Battery handling: Remove the battery, charge to 50%-70% (optimal for lithium battery storage), and store separately; recharge every 3 months to avoid over-discharge.

- Device cleaning and protection: Thoroughly clean residual ink and oil from the device; apply a small amount of lubricating oil to moving parts such as the motor shaft and eccentric wheel; wrap the device in a dust-proof bag and store in a dry, cool storage box (humidity ≤60%, temperature 10-25℃).  

 

14. What daily maintenance work is needed to extend the device's service life? Standard daily maintenance can extend the device's service life from 1-2 years to 3-5 years:

- After each use: Immediately remove the integrated needle and clean residual ink from the interface; wipe the device with alcohol wipes, dry before storage; check for loose screws and tighten promptly.

- Weekly maintenance: Clean battery contact points and check for battery swelling or leakage; lubricate the motor and transmission components, and remove dust and debris from gear gaps.

15. E1 Short Circuit Protection

- Fault indication: Display of "E1" on the screen indicates short circuit protection has been triggered; returns to standby screen after 3 seconds. This fault is mostly caused by motor damage or short circuit in the connecting wires. - Troubleshooting steps:

1. Remove the tattoo pen casing, start and test if the transmission system operates normally, or swap the motor transmission/battery pack for testing.

2. Check if the motor is loose, causing a short circuit in the connecting wires.

3. After troubleshooting, clean the transmission parts and reapply grease before reassembling to ensure smooth operation.

 

16. E2 Overcurrent/Overload Protection 

- Fault indication: Display of "E2" on the screen indicates overcurrent protection has been triggered; returns to standby screen after 3 seconds. This fault is usually caused by stuck transmission components or loose internal screws, preventing the motor from rotating normally.

- Troubleshooting steps:

1. Remove the tattoo pen casing and check if the transmission components or their fixing screws are loose, causing the transmission part to get stuck.

2. After troubleshooting, clean the transmission parts and reapply grease before reassembling to ensure smooth operation.

17. E3 Charging Fault Protection

- Fault indication: Display of "E3" on the screen indicates charging protection has been triggered. If the charging voltage is less than 4.3V, E3 flashes slowly 5 times every minute before returning to charging mode; if the voltage rises above 4.5V, normal charging resumes. If charging takes more than 3 hours to reach full capacity (starting from 3% battery), the system will also display E3.

- Troubleshooting steps:

Replace the charging cable or charger. If the above methods fail to resolve the E1, E2, or E3 errors, please send the device back to the factory for inspection and repair.  

 

18. The device is out of warranty but malfunctions. Can it still be repaired? Are there risks in self-disassembly and repair?

Solutions are available for out-of-warranty devices, but self-disassembly is not recommended.

- Official after-sales channel: Contact official customer service and mail the device to the designated repair center for reliable repair quality.

- Risks of self-disassembly: The device contains precision circuits and motor components—non-professional disassembly may damage the control board or motor; additionally, self-disassembly may result in official refusal of paid repair services later.

- Third-party repair notes: If choosing third-party repair, confirm the repairer has tattoo equipment repair qualifications to avoid reduced device performance or safety hazards from non-original accessories.  

 

19. How to determine if a fault can be resolved by oneself or requires sending to after-sales? 

Judge based on the principle of "simple before complex, external before internal":

- Self-resolvable faults: External or parameter-related issues such as no power-on response (clean contact points, replace battery), battery life degradation (calibrate battery, optimize usage habits), surface stain cleaning, and loose screw tightening.

- Faults requiring after-sales service: Issues involving core hardware or structure, such as abnormal motor noise or non-operation, unresolved control board errors, internal water damage, damaged charging port, or inability to reassemble after disassembly.

- Safety fallback principle: If the fault is accompanied by dangerous signs such as sparks, burning odor, or abnormal overheating (exceeding 60℃), stop use immediately and send to after-sales regardless of whether the cause can be identified to avoid electric shock or fire accidents.