1. Pengenalan
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. Maklumat Keselamatan
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. Produk Lebihview
3.1 Ciri-ciri Utama
- Perlindungan Komprehensif: Includes overcharge, overdischarge, overcurrent, short circuit, and temperature protection.
- Reka bentuk kalis air: 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.
- Pengimbangan Pasif: 100mA passive balancing extends the lifespan of lithium batteries.
- Pemantauan Pintar: Bluetooth module allows viewing and setting battery parameters via a mobile app or PC software.
- Penggunaan Kuasa Rendah: 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.


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

| Parameter | Nilai |
|---|---|
| Jenis Produk | Port biasa LiFePO4 4S 40A dengan keseimbangan |
| Arus Pelepasan | 40A |
| Arus Pelepasan Lebihan | 60±1.2A |
| Mengecas Arus | 40A |
| Arus Lebihan Caj | 60±1.2A |
| Caj Terlebih Voltage | 3.75V±0.05V (Boleh ditetapkan) |
| Volum Pelepasan Lebihantage | 2.2V±0.05V (Boleh ditetapkan) |
| Caj Voltage | 14.6V |
| Model (Specific) | LifePO4 4S 12V 40A |
| Model (General Series) | 4S-24S 12V-72V 40A-500A (Specific: R10K for 3-10S series) |
| Dimensi (L x W x H) | 123 x 65 x 14 mm (4.84 x 2.56 x 0.55 inci) |
| Wayar Keluaran | 10AWG/100mm |
| Balance Cable | 24AWG/300mm |
| Berat badan | 170-210g (6.0-7.4 ounces) |
| Pengeluar | Dongguan Daly Electronics Co., Ltd. |
5. Persediaan dan Pemasangan
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:
- Sediakan Pek Bateri: Ensure all individual battery cells are balanced and at a similar voltagaras e sebelum menyambungkan BMS.
- Sambungkan Wayar Imbangan: 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:
- Sambungkan terminal negatif utama pek bateri ke terminal-B pada BMS.
- Connect the main positive terminal of the battery pack to the P+ terminal on the BMS.
- Sambungkan terminal negatif beban/pengecas ke terminal-P pada BMS.
- Connect NTC Temperature Sensor: Attach the NTC sensor to a central cell or area of the battery pack to monitor temperature.
- Sambungkan Modul Bluetooth: Pasangkan modul Bluetooth ke port yang ditetapkan pada BMS.
- Kuasa Permulaan: 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. Arahan Operasi
6.1 Kawalan APP Pintar
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.
- Muat turun Apl: Cari untuk the official DALY BMS app on your smartphone's app store (iOS/Android) or download the PC software from the DALY webtapak.
- Sambung melalui 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).
- Parameter Monitor: The app's main interface will display critical battery information, including:
- Bateri keseluruhan voltage dan semasa.
- Sel individu voltages.
- Battery State of Charge (SOC).
- Temperature readings from NTC sensors.
- Balancing status and current.
- Protection status (e.g., overcharge, overdischarge, overcurrent).
- Laraskan Tetapan: 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.


6.2 Sambungan Selari
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. Penyelenggaraan
Regular maintenance helps ensure the optimal performance and longevity of your DALY Smart BMS and battery pack.
- Pemeriksaan Visual: Periksa BMS dan semua sambungan secara berkala untuk sebarang tanda kerosakan, kakisan atau pendawaian yang longgar.
- Kebersihan: Pastikan BMS dan pek bateri bersih dan bebas daripada habuk dan serpihan. Gunakan kain kering dan lembut untuk pembersihan.
- Pemantauan Suhu: Regularly check the battery temperature via the app to ensure it operates within safe limits.
- Sel Voltage Pemantauan: 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.
- Kemas kini Firmware: Semak DALY website or app for any available firmware updates for your BMS model to ensure you have the latest features and bug fixes.
8. Penyelesaian masalah
Jika anda menghadapi masalah dengan DALY Smart BMS anda, pertimbangkan langkah penyelesaian masalah berikut:
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| BMS not powering on / No output |
|
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| Isu sambungan Bluetooth |
|
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| Sel bateri tidak seimbang |
|
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| Overcurrent protection triggers frequently |
|
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If the problem persists after attempting these solutions, please contact DALY customer support.
9. Waranti dan Sokongan
DALY is committed to providing quality products and customer satisfaction. Your DALY Smart BMS comes with a quality guarantee and technical support.
- Jaminan Kualiti: The product is manufactured under strict quality control standards and is ISO/FCC/RoHS/PSE/CE approved.
- Perkhidmatan Pelanggan: DALY provides 24-hour one-on-one customer service and technical support.
- Maklumat Hubungan: 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.




