1. Introdución
Thank you for choosing the SEESII S516 16.8V Brushless Cordless Impact Driver. This powerful and compact tool is designed for efficient tightening and removing of screws in various household and DIY projects. Featuring a brushless motor, variable speed control, and a quick-loading chuck, it offers both performance and convenience. Please read this manual thoroughly before operation to ensure safe and effective use of your new tool.
2. Instrucións xerais de seguridade
Siga sempre as precaucións de seguridade básicas ao usar ferramentas eléctricas para reducir o risco de incendio, descarga eléctrica e lesións persoais.
- Seguridade na zona de traballo: Manteña a súa área de traballo limpa e ben iluminada. As zonas desordenadas ou escuras invitan aos accidentes. Non manexe ferramentas eléctricas en atmosferas explosivas, como en presenza de líquidos, gases ou po inflamables.
- Seguridade eléctrica: Evite o contacto corporal con superficies conectadas á terra ou con toma de terra, como tubaxes, radiadores, fogóns e frigoríficos. Non expoña as ferramentas eléctricas á choiva nin á humidade.
- Seguridade persoal: Use sempre protección ocular. Use protección auditiva cando traballe durante períodos prolongados. Vístase axeitadamente; evite roupa folgada ou xoias. Manteña o cabelo, a roupa e as luvas lonxe das pezas móbiles.
- Uso e coidado da ferramenta: Non force a ferramenta eléctrica. Empregue a ferramenta eléctrica axeitada para a súa aplicación. Desconecte a batería da ferramenta eléctrica antes de facer axustes, cambiar accesorios ou gardar ferramentas eléctricas.
- Uso e coidado da batería: Recharge only with the charger specified by the manufacturer. Do not use a battery pack or tool that is damaged or modified.
3. Contido do paquete
Your SEESII S516 Impact Driver package should include the following items:
- 1 x SEESII S516 16.8V Brushless Cordless Impact Driver
- 2 baterías de ións de litio de 2.0 Ah
- 1 x cargador de batería
- 1 x bolsa de transporte
- 20 x Screwdriver Bits (Sizes: PH0, PH1, PH2, PH3, T9, T10, T15, T20, T25, T30, PZ1, PZ2, PZ3, SL0.6*3/16, SL0.6*4.5, SL0.8*7/32, H1/8, H9/64, H3/16, H1/4)
- 1 x Manual de usuario

4. Especificacións
| Atributo | Valor |
|---|---|
| Nome da marca | Seesii |
| Número de modelo | S516 |
| Tipo | Cordless Screwdriver / Impact Driver |
| Fonte de enerxía | Batería (Ion-Litio) |
| Voltage | 16.8 V |
| Capacidade da batería | 2 x 2.0 Ah |
| Tipo de motor | Sen escobillas |
| Máx. Torque | 140Nm (1240 In-lbs) |
| Velocidade sen carga | 3300rpm (Variable: 0-1900/2400/2700rpm) |
| Frecuencia de impacto | 0-3100rpm (Variable: 0-1600/3500/4000IPM) |
| Tipo Chuck | 1/4" Quick Loading Metal Hex Chuck |
| Weight (bare tool & battery) | 2.0 libras (aprox. 0.91 kg) |
| Tempo de carga | 2-4 horas |
| Use | DIY casa |
| Certificación | CE |

5. Configuración
5.1. Cargando a batería
- Conecta o cargador a unha toma de corrente estándar.
- Slide the 2.0Ah Lithium-Ion battery pack onto the charger until it clicks into place.
- The indicator light on the charger will show the charging status. Allow 2-4 hours for a full charge.
- Unha vez cargada por completo, retire a batería do cargador.

5.2. Installing/Removing Screwdriver Bits
The SEESII S516 features a 1/4" Quick Loading Metal Chuck for easy bit changes.
- To install a bit, pull back on the chuck's collar.
- Insert the desired 1/4" hex shank screwdriver bit into the chuck.
- Release the collar to lock the bit in place. Ensure the bit is securely seated before operation.
- To remove a bit, pull back on the collar and pull the bit out.

6. Instrucións de funcionamento
6.1. Colocación da batería
Aliñe a batería coa base da ferramenta e deslícea cara a dentro ata que encaixe firmemente no seu lugar.
6.2. Powering On/Off and Speed Adjustment
The tool is activated by pressing the trigger. The speed is variable based on how much the trigger is pressed. The SEESII S516 also features a 3-speed adjustable forward switch and a reverse switch with auto-stop and continuous operation modes.
- Interruptor de avance/retroceso: Locate the switch near the trigger. Push it to the left for forward rotation (driving screws) and to the right for reverse rotation (removing screws). The center position locks the trigger for safety.
- Selección de velocidade: Use the speed selection buttons (often indicated by 1, 2, 3) on the tool to choose between low, medium, and high speeds. This allows you to match the speed and torque to the task at hand.


6.3. Built-in LED Work Light
The impact driver is equipped with a built-in LED light that illuminates the work area when the trigger is pressed, facilitating work in dim light conditions.

6.4. Uso xeral
Hold the tool firmly and apply steady pressure. For optimal results, start at a lower speed and gradually increase as needed. The impact mechanism will engage automatically when resistance is met, providing additional torque for driving fasteners.

7. Mantemento
7.1. Limpeza
Limpe regularmente as aberturas de ventilación da ferramenta para evitar o sobrequecemento. Use un pano suave eamp un pano para limpar o exterior. Non empregue produtos químicos agresivos nin produtos de limpeza abrasivos. Manteña o mandril libre de residuos.
7.2. Coidado da batería
- Almacene as baterías nun lugar fresco e seco lonxe da luz solar directa e de temperaturas extremas.
- Do not store batteries in a discharged state for long periods. Recharge them periodically if not in use.
- Avoid dropping or damaging the battery packs.
7.3. Almacenamento
When not in use, store the impact driver and its accessories in the provided carrying bag in a dry, secure location out of reach of children.
8 Solución de problemas
If you encounter issues with your SEESII S516 Impact Driver, refer to the following common problems and solutions:
- A ferramenta non se acende: Ensure the battery is fully charged and properly inserted. Check that the forward/reverse switch is not in the locked (center) position.
- Potencia reducida ou funcionamento intermitente: The battery may be low on charge. Recharge the battery. If the issue persists with a fully charged battery, the battery or tool may require service.
- A broca non se suxeita con seguridade: Ensure the 1/4" hex shank bit is fully inserted into the quick-loading chuck and the collar has snapped back into place. Clean any debris from the chuck mechanism.
- Sobrequecemento: If the tool feels excessively hot, stop operation immediately and allow it to cool down. Ensure ventilation slots are clear of obstructions. Avoid continuous heavy-duty use without breaks.
- Difficulty adjusting speed/torque: Ensure you are using the correct speed selection buttons. The variable speed trigger allows for fine control; ensure it is not stuck.
Se os problemas persisten despois de intentar estas solucións, póñase en contacto co servizo de atención ao cliente.
9. Consellos de usuario
- Access Tight Spaces: The compact (5.1” length) and lightweight (2.0 lbs) design makes this impact driver ideal for reaching screws in confined areas where larger drills cannot fit.
- Funcionamento silencioso: The upgraded brushless motor provides quieter operation compared to traditional brushed motors, which can be beneficial when working in residential areas or shared spaces.
- Visibilidade: Utilize the built-in LED work light for improved visibility when working in poorly lit environments, ensuring accuracy and safety.
- Xestión da batería: With two 2.0Ah batteries included, you can keep one charging while using the other, ensuring continuous workflow for larger projects.
- Conxunto de puntas versátil: The comprehensive set of 20 screwdriver bits covers a wide range of fastener types, making it suitable for various tasks from furniture assembly to minor automotive repairs.
10. Garantía e soporte
SEESII is committed to providing high-quality products and excellent customer service. For any questions, concerns, or technical assistance regarding your S516 Impact Driver, please contact our customer support team.
We offer 24x7 friendly customer support. Our after-sales service experts will endeavor to reply to your inquiries within 12 hours and assist you with any issues you may encounter.





