DALY Smart BMS 4S 12V 40A with Bluetooth Module Instruction Manual

1. Introducció

This instruction manual provides essential information for the safe and effective use of your DALY Smart Battery Management System (BMS) for LiFePO4 battery packs. The DALY Smart BMS is designed to protect your battery pack from various electrical conditions, ensuring its longevity and safe operation. This specific model is a 4S 12V 40A BMS with an integrated Bluetooth module for smart monitoring and control.

2. Informació de seguretat

Please read and understand all safety instructions before installation and operation. Failure to follow these instructions may result in electric shock, fire, serious injury, or property damage.

Always wear appropriate personal protective equipment (PPE), including insulated gloves and eye protection, when working with batteries.
Ensure all connections are correct and secure before applying power. Incorrect wiring can cause damage to the BMS, battery pack, or connected equipment.
Do not short-circuit the battery terminals or the BMS output.
Keep the BMS away from water, moisture, and flammable materials. The BMS has waterproof protection, but direct exposure to water should be avoided during installation and operation.
Do not attempt to disassemble or repair the BMS. Contact qualified personnel for service.
Ensure proper ventilation around the battery pack and BMS during charging and discharging.
Verify that the BMS voltage and current ratings match your battery pack requirements.

3. Producte acabatview

3.1 Característiques clau

Protecció integral: Includes overcharge, overdischarge, overcurrent, short circuit, and temperature protection.
Disseny impermeable: Features patented glue-injection process for enhanced durability and protection against moisture.
Parallel Connection Support: Integrated parallel module prevents large current impacts when connecting battery packs in parallel.
High-Power Pre-charging: Effectively avoids false protection triggers from high startup currents.
Passive Balancing: 100mA passive balancing extends the lifespan of lithium batteries.
Monitorització intel·ligent: Bluetooth module allows viewing and setting battery parameters via a mobile app or PC software.
Baix consum d'energia: Designed for efficient operation with minimal resting current.

3.2 Components and Appearance

The DALY Smart BMS unit typically includes the main BMS board, a Bluetooth module, output wires, NTC temperature sensors, and a manual. The main board is compact and designed for efficient heat dissipation.

DALY Smart BMS 4S 12V 40A with Bluetooth Module and accessories — Figure 1: DALY Smart BMS 4S 12V 40A with Bluetooth Module, balance wires, and app interface example. This image shows the main BMS unit, the detachable Bluetooth module, balance wires, and a representation of the mobile application interface for monitoring battery parameters.

DALY Smart BMS Packing List — Figure 2: Typical packing list for a DALY BMS. The image displays the BMS unit, output wires, NTC temperature sensor, instruction manual, Bluetooth module, balance cables, and the product box.

4. Especificacions

The following table details the specifications for the DALY Smart BMS LifePO4 4S 12V 40A model:

DALY Smart BMS 4S 40A Specifications — Figure 3: Detailed specifications for the LiFePO4 4S 40A DALY BMS. This image provides specific values for discharge current, overdischarge current, charging current, overcharge current, overcharge voltage, sobredescàrrega voltage, volum de càrregatage, model number, size, output wire gauge, cable gauge, and weight.

Table 1: DALY Smart BMS LifePO4 4S 12V 40A Specifications
Paràmetre	Valor
Tipus de producte	LiFePO4 4S 40A common port with balance
Corrent de descàrrega	40A
Overdischarge Current	60 ± 1.2A
Corrent de càrrega	40A
Overcharge Current	60 ± 1.2A
Sobrecàrrec Voltage	3.75V±0.05V (Can be set)
Overdischarge Voltage	2.2V±0.05V (Can be set)
Volum de càrregatage	14.6 V
Model (Specific)	LifePO4 4S 12V 40A
Model (General Series)	4S-24S 12V-72V 40A-500A (Specific: R10K for 3-10S series)
Dimensions (L x A x A)	123 x 65 x 14 mm (4.84 x 2.56 x 0.55 polzades)
Fil de sortida	10AWG/100 mm
Balance Cable	24AWG/300 mm
Pes	170-210g (6.0-7.4 ounces)
Fabricant	Dongguan Daly Electronics Co., Ltd

5. Configuració i instal·lació

Proper installation is crucial for the safe and correct operation of the BMS. Refer to the wiring diagram provided with your specific battery pack and BMS model for precise connections. The following are general steps:

Prepare the Battery Pack: Ensure all individual battery cells are balanced and at a similar voltage level before connecting the BMS.
Connect Balance Wires: Connect the balance wires from the BMS to each cell of your LiFePO4 battery pack in the correct order (B0, B1, B2, B3, B4 for a 4S pack). Always connect the lowest voltage first (B0 to the negative terminal of the first cell) and proceed upwards. Warning: Incorrect balance wire connection order can severely damage the BMS.
Connect Main Power Wires:
- Connect the main negative terminal of the battery pack to the B- terminal on the BMS.
- Connect the main positive terminal of the battery pack to the P+ terminal on the BMS.
- Connect the load/charger negative terminal to the P- terminal on the BMS.
Connect NTC Temperature Sensor: Attach the NTC sensor to a central cell or area of the battery pack to monitor temperature.
Connect Bluetooth Module: Plug the Bluetooth module into the designated port on the BMS.
Engegada inicial: After all connections are verified, apply power to the system. The BMS should activate.

For detailed wiring diagrams, please refer to the manual included in your product packaging or contact DALY support.

6. Instruccions de funcionament

6.1 Control intel·ligent per APP

The DALY Smart BMS features a Bluetooth module that allows for convenient monitoring and control via a dedicated mobile application or PC software. This enables real-time data viewing and parameter adjustments.

Descarrega l'aplicació: Cerca the official DALY BMS app on your smartphone's app store (iOS/Android) or download the PC software from the DALY weblloc.
Connecteu-vos mitjançant Bluetooth: Enable Bluetooth on your device. Open the DALY BMS app and search for available devices. Select your BMS (usually identified by a unique ID).
Paràmetres del monitor: The app's main interface will display critical battery information, including:
- Volum total de la bateriatage i corrent.
- Cèl·lula individual voltages.
- Battery State of Charge (SOC).
- Temperature readings from NTC sensors.
- Balancing status and current.
- Protection status (e.g., overcharge, overdischarge, overcurrent).
Ajustar la configuració: Within the app, you can adjust various parameters such as overcharge/overdischarge voltage thresholds, temperature limits, and balancing settings. Exercise caution when modifying parameters, as incorrect settings can damage the battery or BMS.

DALY Smart BMS App Interface — Figura 4: Example of the DALY Smart BMS mobile application interface. The image highlights various sections for battery overall information, individual string information, capacity settings, and protection voltage configuració.

DALY Smart BMS Features including APP/PC Host/IOT — Figura 5: Mésview of DALY BMS features, emphasizing smart capabilities like APP/PC Host/IOT for remote monitoring and management.

6.2 Connexió paral·lel

The DALY Smart BMS supports parallel connection of multiple battery packs. The integrated parallel module helps manage current impacts during connection. When connecting multiple battery packs in parallel, ensure all packs have similar voltage levels before connecting them. Consult a qualified technician for complex parallel configurations.

7. Manteniment

Regular maintenance helps ensure the optimal performance and longevity of your DALY Smart BMS and battery pack.

Inspecció visual: Periodically inspect the BMS and all connections for any signs of damage, corrosion, or loose wiring.
Neteja: Keep the BMS and battery pack clean and free from dust and debris. Use a dry, soft cloth for cleaning.
Monitorització de la temperatura: Regularly check the battery temperature via the app to ensure it operates within safe limits.
Cell voltage Seguiment: Use the app to monitor individual cell voltages to detect any imbalance early. The passive balancing feature will help, but severe imbalances may require manual intervention or professional service.
Actualitzacions de firmware: Check the DALY website or app for any available firmware updates for your BMS model to ensure you have the latest features and bug fixes.

8. Solució De Problemes

If you encounter issues with your DALY Smart BMS, consider the following troubleshooting steps:

Problema	Causa possible	Solució
BMS not powering on / No output	Incorrect wiring (main power or balance wires). Paquet de bateries voltage massa baix. BMS in protection mode (e.g., overdischarge).	Double-check all wiring according to the diagram. Charge the battery pack using a compatible charger. Check app for protection status and clear faults if safe.
Problemes de connexió Bluetooth	Bluetooth module not properly connected. Problemes d'interferència o de distància. App not updated or incompatible.	Ensure Bluetooth module is securely plugged in. Move closer to the BMS; reduce interference. Update the app or try reinstalling it.
Cèl·lules de la bateria desequilibrades	Passive balancing not sufficient for severe imbalance. Faulty cell.	Allow more time for passive balancing. Consider an external active balancer for severe cases. Inspect individual cells for damage or degradation.
Overcurrent protection triggers frequently	Load current exceeds BMS rating. Curtcircuit a la càrrega. BMS current setting too low.	Reduce the load or use a BMS with a higher current rating. Inspect load for short circuits. Adjust overcurrent settings in the app (if applicable and safe).

If the problem persists after attempting these solutions, please contact DALY customer support.

9. Garantia i Suport

DALY is committed to providing quality products and customer satisfaction. Your DALY Smart BMS comes with a quality guarantee and technical support.

Garantia de qualitat: The product is manufactured under strict quality control standards and is ISO/FCC/RoHS/PSE/CE approved.
Atenció al client: DALY provides 24-hour one-on-one customer service and technical support.
Informació de contacte: If you have any questions, require technical assistance, or need to report an issue, please feel free to contact DALY customer support through the official website or your purchase channel.

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DALY LifePO4 4S 12V 40A