Introdución
The YOUMILE 18650 Lithium Battery Boost Charging Card UPS Uninterruptible Module (Model JK-YM-795) is designed to provide uninterrupted power to devices during power outages. This module seamlessly switches from external power to battery power without delay, ensuring continuous operation for critical equipment. It integrates lithium battery charging, battery protection, boost output, and UPS switching functionalities.

Figura 1: Acabadoview of the YOUMILE 18650 Lithium Battery UPS Module. This image displays the main circuit board with its components and the integrated 18650 battery holders.
Características clave
- Uninterruptible Power Supply (UPS) Functionality: Seamlessly switches to battery power upon external power failure.
- Carga integrada: Supports charging of 3.7V lithium batteries (4.2V fully charged).
- Protección da batería: Includes overcharge, over-discharge, over-temperature, and over-current protection for enhanced battery safety and longevity.
- Boost Output: Ofrece un volume de saída establetages (5V/9V/12V) for various devices.
- Entrada de enerxía flexible: Features a Type-C charging port (max 5A) and direct DC5V input.
- Indicador LED: Green LED indicates full charge, with automatic charging stop.

Figura 2: Illustration of the Battery Management System (BMS) protection features, including overcharge, over-discharge, over-current, and high-temperature protection.
Instrucións de configuración
- Install 18650 Lithium Batteries: Insert one or two 3.7V 18650 lithium batteries into the designated battery sockets on the module. Ensure correct polarity. The module supports 4.2V fully charged batteries.

Figura 3: Proper insertion of 18650 lithium batteries into the module's battery holders.
- Conectar fonte de alimentación: Connect a 5V power source to the module using either the Type-C charging port or the direct DC5V input terminals. The maximum input current for Type-C is 5A.
- Conectar a carga: Connect your 5V, 9V, or 12V device to the output terminals of the module. Ensure the load power does not exceed 15W. Refer to the specifications for current limits at different output voltages.

Figura 4: Diagram illustrating the connection of the Type-C power input and the 5V load (e.g., a router) to the UPS module.
Instrucións de funcionamento
- Funcionamento normal: When external power is connected, the module will directly power the connected load via its boost circuit and simultaneously charge the installed lithium batteries.
- Función UPS: In the event of an external power failure, the module will automatically and seamlessly switch to drawing power from the installed 18650 batteries to continue powering the load. There is no noticeable delay during this transition.
- Indicador de carga: During charging, the LED indicator will show the charging status. Once the batteries are fully charged, the green LED will illuminate constantly, and the charging process will automatically cease to prevent overcharging.
- Load Power Limit: Ensure that the total power consumption of the connected load does not exceed 15W. Exceeding this limit may cause the module to malfunction or damage.
Mantemento
- Coidado da batería: Use only high-quality 18650 lithium batteries. Avoid mixing old and new batteries or batteries of different capacities.
- Características de protección: The module includes built-in overcharge, over-discharge, over-temperature, and over-current protection. Do not attempt to bypass these safety features.
- Limpeza: Keep the module clean and free from dust and moisture. Use a dry, soft cloth for cleaning.
- Almacenamento: If storing the module for an extended period, remove the batteries and store them separately in a cool, dry place.
Resolución de problemas
- Sen potencia de saída:
- Comprobe se as baterías están correctamente instaladas e cargadas.
- Verify the external power supply is connected and functional.
- Ensure the load power does not exceed 15W.
- Inspect all connections for proper contact.
- Baterías que non se cargan:
- Confirm the external power supply (Type-C or DC5V) is providing 5V.
- Check the LED indicator for charging status. If it's constantly green, batteries might already be full.
- Ensure batteries are properly seated and not damaged.
- Sobrequecemento do módulo:
- Reduce the connected load. The module has over-temperature protection, but continuous high load can cause heat.
- Asegúrese de que haxa unha ventilación axeitada arredor do módulo.
Especificacións
| Característica | Valor |
|---|---|
| Tipo de elemento | Battery Boost Charging Module (UPS) |
| Modelo | JK-YM-795 |
| Entrada de alimentación | Type-C (Max 5A) or External DC5V Wiring |
| Tipo de batería | 3.7V Lithium Battery (18650, 4.2V fully charged) |
| Switching Power Supply Structure | BOST Boost |
| Potencia nominal | Ata 15W |
| Vol. De saídatage | 5V / 9V / 12V |
| Corrente de saída (máx.) | 5V: 3A, 9V: 1.6A, 12V: 1.2A |
| Protección de batería de litio | Overcharge, Over-discharge, Over-temperature, Over-current |
| Dimensións (aprox.) | 89 mm x 42 mm (3.50 polgadas x 1.65 polgadas) |
| Peso (aprox.) | 50 gramos |

Figura 5: Physical dimensions of the YOUMILE 18650 Lithium Battery UPS Module.
Aplicación
This UPS module is versatile and suitable for a wide range of devices that require continuous power, especially in scenarios where power interruptions are critical. Common applications include:
- Cámaras de seguridade
- Routers e pasarelas
- Iluminación de emerxencia
- Xuntas de Desenvolvemento
- Other low-power electronic equipment requiring uninterrupted power.

Figura 6: Examples of devices compatible with the UPS module, such as security cameras, routers, switches, and development boards.
Información de seguridade
- Do not short-circuit the battery terminals or output terminals.
- Non expoña o módulo á auga, á calor excesiva nin á luz solar directa.
- Handle with care to avoid damage to electronic components.
- Manter fóra do alcance dos nenos.
- Dispose of batteries and the module according to local regulations.
Garantía e Soporte
Specific warranty information for this product is not provided in the available documentation. For support or warranty inquiries, please contact your retailer or the manufacturer directly.





