Sarrera
This manual provides detailed instructions for the installation, operation, and maintenance of your DALY Smart BMS (Battery Management System) for LiFePo4 4S 12V 200A battery packs. The BMS features a programmable Bluetooth module for monitoring and parameter adjustment via a mobile application. It is designed to protect lithium batteries from various conditions including over-charge, over-discharge, over-current, and temperature extremes, while also providing cell balancing.

Image: DALY Smart BMS unit with its Bluetooth module and a smartphone displaying the monitoring application. This image illustrates the main components and the digital interface.
Segurtasun-neurriak
- Always wear appropriate personal protective equipment (PPE) when working with batteries.
- Ensure all connections are secure and correctly polarized to prevent damage to the BMS or battery.
- Ez jarri zirkuitulaburra bateriaren terminalak.
- Avoid exposing the BMS to water or extreme temperatures beyond its operating range.
- Consult a qualified professional if you are unsure about any installation or operation steps.
Konfigurazioa
Osagaiak barne:
- Smart BMS unit
- Balance wires
- Bluetooth module (for Mobile APP IOS & Android)
- UART cable (for PC screen)
- English version wiring manual (refer to this for detailed diagrams)
Kableatzeko argibideak:
Follow the wiring diagram carefully. Incorrect wiring can damage the BMS and battery. It is crucial to connect the balance wires correctly to each cell in the battery pack.

Image: Detailed wiring diagram showing connections from the battery cells to the BMS, and then to the motor/load and charger. This diagram is essential for correct installation.
- Prepare the Battery Pack: Ensure all individual cells in your LiFePo4 4S 12V battery pack are at a similar voltage level before connecting the BMS.
- Konektatu oreka-kableak: Connect the balance wires from the BMS to each cell of the battery pack in the correct sequence (B-, B1, B2, B3, B+). Double-check the voltage between adjacent cables using a multimeter to confirm the wiring is normal and matches the nominal voltagkate bakarreko e.
- Konektatu kable nagusiak: Connect the main negative (B-) and positive (P+) cables from the BMS to the battery pack and the load/charger respectively.
- Activate the BMS: Plug in the NTC (temperature sensor) and Bluetooth module. Press the activation button on the Bluetooth module to activate the smart BMS.
Garrantzitsua: Disconnect balance wires and the BMS connection port before welding black and red balance wires on the battery pack. Keep the red cooling surface side uncovered and use DALY matching balance wires (regular length 450 mm / 17.72 inch).
Mugikorretarako aplikazioaren konexioa:
- Download the "Smart BMS" application from the Huawei App Store or Apple App Store.
- Open the Smart BMS APP on your mobile phone.
- Connect to the corresponding Bluetooth device number displayed in the app.
- Upon successful connection, you can view battery parameters and adjust settings.
Video: This video demonstrates the initial setup process, including measuring cell voltages, connecting the BMS, activating it, and connecting to the Smart BMS mobile application to view battery parameters and adjust settings. It highlights the steps for first-time power-on and setting battery capacity.
Funtzionamendu-argibideak
Monitoring Real-Time Data:
The Smart BMS app allows you to monitor various battery parameters in real-time via Bluetooth. This includes State of Charge (SOC), current, voltage, temperature, and individual cell voltages.

Image: Screenshot of the DALY Smart BMS mobile application interface, showing real-time monitoring of battery parameters such as SOC, current, voltage, and individual cell voltages. This interface provides comprehensive data for battery management.
Parametroen ezarpenak:
For the first power-on, the battery capacity must be set to the actual capacity of your battery pack. The initial password for parameter settings is 123456. You can adjust various protection parameters such as:
- Gehiegizko karga boltage babesa
- Gehiegizko deskarga boltage babesa
- Over-current protection (charge and discharge)
- Temperature protection (high and low for charge/discharge)
- liburukiatage balancing settings
Always modify parameters under the guidance of the battery manufacturer or a qualified expert to prevent damage to the battery or BMS.
Babes funtzioak:
The DALY Smart BMS is equipped with multiple protection features to ensure the safety and longevity of your LiFePo4 battery pack:
- Gehiegizko kargaren babesa: Stops charging when cell voltage reaches a set limit.
- Deskarga gehiegizko babesa: Stops discharging when cell voltage drops to a set limit.
- Gainkorrontearen babesa: Stops charging or discharging if current exceeds programmed limits.
- Zirkuitu laburren babesa: Protects against short-circuit events.
- Bolumen gehiegitage Babesa: Prevents overall battery voltage from exceeding safe levels.
- Balance Function: Actively balances cell voltages to maintain pack health.
- NTC Temperature Protection: Monitors battery temperature and stops current if limits are reached.

Image: Visual representation of the 12 protection functions integrated into the DALY Smart BMS, including Bluetooth connectivity, programmability, various over-voltage/current protections, balancing, and environmental resistances.
Mantentzea
- Ohiko ikuskapena: Periodically check all wiring connections for tightness and signs of corrosion or damage.
- Garbitasuna: Keep the BMS unit clean and free from dust and debris. Ensure cooling surfaces are not obstructed.
- Software eguneraketak: Check the DALY website or app store for any available firmware or app updates to ensure optimal performance and security.
- Ingurumen-baldintzak: Operate the BMS within its specified temperature and humidity ranges to prevent premature failure.
- Bateriaren osasunaren jarraipena: Regularly monitor battery parameters via the app to detect any anomalies early.
Arazoak konpontzea
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| BMS randomly shuts off. |
|
|
| Bluetooth konexio arazoak. |
|
|
| Battery cells are not balancing effectively. |
|
|
Zehaztapenak
| Ezaugarri | Xehetasuna |
|---|---|
| Produktu Mota | LiFePo4 4S 200A Common Port with Balance |
| Komunikazioa | UART (Single communication) |
| Deskarga Korrontea | 200A |
| Gehiegizko deskarga-korrontea | 300A ± 30A (Configurable) |
| Karga Korrontea | 100A (konfiguragarria) |
| Overcharge Current | 300A ± 30A (Configurable) |
| Gehiegizko karga Voltage | 3.75V ± 0.05V (per string, Configurable) |
| Gehiegizko deskarga Voltage | 2.3V ± 0.1V (per string, Configurable) |
| Karga Voltage | 14.6V (Configurable) |
| Eredua | R05W |
| Neurriak | 221 x 130 x 32 mm (8.66 x 4.72 x 1.42 hazbete) |
| Output Wire Gauge | 6AWG |
| Balance Wires | 24AWG/350mm |
| Aukerako Ezaugarriak | Bluetootha (BT) |
| Pisua | ~1733g (3.82 pounds) |
| Konektibitate Teknologia | Bluetootha |
| Energia iturria | Bateriaren bidez |
| Gailu bateragarriak | Mobile Phones (IOS & Android) |

Image: A table detailing the technical specifications of the DALY Smart BMS, such as product type, communication protocols, current ratings, voltage protections, dimensions, and weight.
Bermea
Bermearen xehetasun zehatzak normalean produktuaren ontzian edo fabrikatzailearen liburuxka ofizialean ematen dira. website. Please refer to the documentation included with your purchase for precise warranty terms and conditions. Generally, DALY products are covered by a manufacturer's warranty against defects in materials and workmanship for a specified period from the date of purchase.
Laguntza
For technical assistance, product inquiries, or support, please visit the official DALY website or contact their customer service. You can often find additional resources, FAQs, and contact information on the manufacturer's website. For general information, you may visit the DALY Store on Amazon.




