Overview
DALY Smart BMS Y-series 150–200A (YM) is a smart battery management system (BMS) with built-in Bluetooth for lithium battery packs. It supports selectable string ranges of 4–8S, 7–17S, and 7–24S, with selectable current options of 150A or 200A. Battery data can be monitored in real time through a Bluetooth smart app, and parameters can be viewed/set via the app.
Key Features
- Built-in Bluetooth: Monitor battery data in real time by connecting to the app; view/set battery parameters and monitor battery information such as voltage, current, charge/discharge status, and alerts.
- Smart compatible strings: 4–8S / 7–17S / 7–24S; supported battery types include Li-ion / LiFePO4 / LTO.
- Auto-identifies pack strings: Auto-identifies strings on first power-up only.
- Protection functions: Overcharge, over-discharge, overcurrent, pre-charge, short circuit, high temperature, low temperature, static electricity, offline.
- Communication & expansion: Standard communication UART; customizable communication RS485, SIF. Expandable accessories include display screen, WiFi module, GPS module, parallel module, buzzer, heating module, key switch, etc.
- Parallel current limiting: Integrated 1A parallel current limiting module.
- Component design: High-quality microelectronic components (precise and fast IC; low resistance, high withstand voltage MOSFET); thermal silica to accelerate heat dissipation; preset interface and buckle cable for convenient connection.
Specifications
| Model | DALY SMART BMS: Y-series 150–200A (YM) |
| Optional string range | 4–8S / 7–17S / 7–24S |
| Optional current range | 150A / 200A |
| YM size | 180*92.4*17.2mm |
| YM B- / P- cable | 2AWG 200mm |
| YM cable length | 550mm |
| Dimensional data tolerance range | ±0.5mm |
| Battery type | Li-ion / LiFePO4 / LTO |
| String number range (Li-ion) | 4–8 / 7–17 / 7–20S |
| String number range (LiFePO4) | 4–8 / 8–17 / 8–24S |
| String number range (LTO) | 6–8 / 10–17 / 10–24S |
| Charging voltage (Li-ion) | N x 4.2V |
| Charging voltage (LiFePO4) | N x 3.2V |
| Charging voltage (LTO) | N x 2.4V |
| Operating temperature | -40~85°C |
| Passive balance current | 100±30mA |
| Working power | ≤10mA |
| Sleep current | <600uA |
| Sleep time | 3600S |
| NCT | *1 (2 ways) |
| Cell sampling voltage | 1.5~4.9V |
| Standard communication | Uart |
| Customizable communication | RS485, SIF |
| Parallel current limiting | Integrated 1A parallel current limiting module |
| PC Master | Support Windows system |
| Bluetooth | Built-in Bluetooth. Support Android/iOS/HarmonyOS |
| Passive equalization - Balanced start voltage | 3.4V |
| Passive equalization - Balanced opening voltage difference | ≥20mV |
| Passive equalization - Balance current | 100±30mV |
Passive equalization conditions: Balanced start when both conditions are met: (1) Reach the set balanced start voltage; (2) The highest voltage reaches the set balanced start voltage difference.
Basic Functions
- Over-charging protection
- Over-discharging protection
- Over-current protection
- Temperature protection
- Disconnect protection
- Short circuit protection
- Balance function
- Short circuit protection recover
What’s Included
- BMS x 1 pcs
- Sampling cable x 1 pcs
- Temperature probe (NTC) x 1 pcs
- B+ cable x 1 pcs
- English manual x 1 pcs
- USB-Uart cable x 1 pcs
Optional Accessories
- UART to USB cable
- Battery capacity indicator
- Touch screen LCD
Customization Options
- Soft switch
- Key switch
- RS485 and CAN communication
- DO/I port for special needs
Optional accessories and customized accessories must match the BMS model and be purchased at the same time. Bulk orders can customize functions, parameters, and logo; standard BMS and smart BMS can be customized.
Applications
- RV energy storage
- Photovoltaic energy storage
- Home and outdoor energy storage
- Electric vehicles, tricycles
- Forklifts
- Tourist vehicles
- Golf carts
Selection & Installation Notes
- Battery type matching: BMS type and lithium battery type must be in one-to-one correspondence (Li-ion/LiFePO4). Mismatch may cause BMS damage and battery damage, and the battery may not fully charge/discharge.
- String matching: BMS strings and battery strings must be in one-to-one correspondence. Mismatch may cause BMS and battery damage.
- Selection method: load maximum power ÷ (string number of battery × overdischarge voltage) × coefficient. Coefficient depends on usage scenario.
- Welding note: When soldering, the balance cable cannot be inserted into the BMS. Do NOT plug into BMS during welding. Insulate unused wires.
- Output wire fastening: Secure B- and P- to BMS with 10 N·m torque.
- Voltage measurement: Measure whether the battery voltage (B+→B-) is consistent with the output voltage of the BMS (B+ P-). If equal, the BMS is working normally.
For selection guidance, customization details, or model matching support, contact customer service at https://tsolar.top/ or service@tsolar.top.
Details
Built-in Bluetooth support makes it easy to monitor pack status and adjust key parameters in the mobile app.
Choose the YM version when you need higher current options and larger hardware size for demanding battery builds.
Protection features cover common battery fault conditions, with UART standard communication and optional RS485/SIF.
Selectable string ranges help match the BMS to Li-ion, LiFePO4, or LTO packs without changing the overall platform.
On first power-up, the BMS can identify the pack string count to simplify initial setup.
Real-time readings for voltage, current, charge/discharge status, and alerts stay available over Bluetooth.
Component layout and enclosure design are built for high-current use while keeping wiring connections accessible.
Optional add-ons such as displays, WiFi, GPS, buzzer, and heating modules connect through supported communication ports.
Add the optional WiFi module for remote management features through the DALY Cloud platform.
Multiple display accessory styles are available, from compact single-line readouts to a 4.3-inch touch screen.
DALY Smart BMS is designed for lower standby draw, with working power rated at ≤10 mA and sleeping current under 600 µA.
DALY Smart BMS supports safer parallel battery pack expansion by helping reduce high-current impact when packs are connected together.
The DALY Smart BMS package includes the BMS unit, manual, DIO cable, sampling cable, B+ lead, NTC sensor, output line, and screws for installation.
The DALY Smart BMS wiring guide outlines the steps for connecting the sampling cable, NTC sensor, and B+/B- leads for a 4–8S battery pack.
DALY Smart BMS wiring uses B+ and B- main leads plus the numbered cell balance wires, with separate connections for the load, charger, and NTC temperature sensor.
DALY Smart BMS Mini-Black BMS is presented as part of the Y Series for battery management applications.
DALY Smart BMS supports customizable app, PC, and cloud management options with Bluetooth/WiFi connectivity and branding customization.
DALY emphasizes in-house R&D with engineers testing and refining battery management system designs.
DALY emphasizes smart manufacturing for its BMS production, citing a 20,000 m² intelligent production base and daily output up to 30,000 units.
Shipping is typically arranged within 3–7 days, with a one-year warranty policy provided under normal use.
