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DALY 4S 12V 100A BMS (Battery Management System)[Warranty: 1 Year]
₹2,528.00
DALY Smart BMS 4S 12V 100A (LiFePO4)
Intelligent Battery Management System A premium, high-current protection board engineered for 12V Lithium Iron Phosphate (LiFePO4) battery packs, balancing performance and absolute safety.
High-Current Handling: Supports a continuous 100A charge and 100A discharge current, making it ideal for high-load invertors, solar arrays, and custom power setups.
Smart Multi-Layer Guard: Full automated protection against cell over-charging, over-discharging, over-current spikes, short-circuits, and thermal runaway via an integrated NTC temperature sensor probe.
Premium Thermal Design: Housed in a compact, ruggedized sealed enclosure featuring heavy-duty copper screw terminal contacts for low-resistance connectivity and superior heat dissipation.
Best For: LiFePO4 Battery Custom Builds • Solar Energy Storage • Home Backup Inverters • Marine & RV Systems
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DALY Smart BMS 4S 12V 100A (LiFePO4) – Premium Battery Protection Board
The DALY 4S 12V 100A Battery Management System (BMS) is an industrial-grade, hardware-level protection circuit engineered to maximize the safety, conversion efficiency, and operational lifespan of 12V Lithium Iron Phosphate (LiFePO4) battery packs. By continuously monitoring critical cell-level parameters, this system prevents devastating electrical failures, making it the premier choice for custom battery pack assembly, solar storage reservoirs, electric mobility, and DIY power installations.
Patented Environmental Armoring: Utilizing a specialized plastic injection molding process, the board is completely sealed to deliver verified IP65 waterproof, dustproof, and shockproof defenses capable of surviving severe workshop or outdoor deployment conditions.
Low Resistance & Thermal Efficiency: Features an advanced wave-type aluminum heatsink plate combined with high-voltage resistance power MOSFETs to efficiently dissipate heat during sustained continuous power throughput.
1. Technical Specifications & Operating Thresholds
| Parameter | Laboratory-Validated Specification |
| Model Code | DALY 4S12V100A |
| Chemistry Compatibility | Lithium Iron Phosphate (LiFePO4 / LFP) |
| Cell Configuration | 4S (4 Cells in Series) |
| Nominal System Voltage | 12V / 12.8V |
| Continuous Discharge Current | 100A |
| Continuous Charging Current | 50A (Max up to 100A variant threshold) |
| Overcharge Detection Voltage | $3.75text{V} pm 0.05text{V}$ |
| Overcharge Release Voltage | $3.55text{V} pm 0.05text{V}$ |
| Over-Discharge Detection Voltage | $2.20text{V} pm 0.05text{V}$ |
| Passive Balancing Threshold | Active at $3.5text{V}$ with a balancing current of $30text{mA} pm 5text{mA}$ |
| Safe Working Temperatures | -20°C to 70°C |
| Available Inventory Status | SOH / Available Quantity: 04 Units Only |
2. Five-Layer Smart Hardware Safety Infrastructure
The DALY system uses high-precision acquisition chips and Japanese Seiko integrated control circuits (ICs) to isolate faults within 250 to 500 microseconds:
Cell Equalization (Passive Balancing): Automatically distributes energy across all four series cells once balancing thresholds are reached, eliminating capacity mismatches and extending individual cell lifespan.
Over-Charge & Over-Discharge Isolation: Instantly cuts the power path if a cell exceeds or drops below safe structural voltage boundaries, avoiding permanent chemical breakdown.
Over-Current & Short-Circuit Suppression: Leverages dedicated high-current copper routing to manage heavy load surges while safeguarding the battery cells against sudden ground shorts.
NTC Thermal Sensor Interlock: Includes an integrated external negative temperature coefficient probe that halts system loops during dangerous overheating or under-temperature operations.
3. Versatile Power Applications
Custom Lithium Battery Pack Assemblies: An essential component for battery pack manufacturers building certified 12V LFP banks.
Electric Mobility: Safely manages power demands for low-speed electric mobility projects, including specialized electric scooters, utility carts, and e-bikes.
Off-Grid Solar Energy Reservoirs: Seamlessly regulates energy input from solar charge controllers and output channels into high-wattage standalone power banks.
Standby UPS & DIY Projects: Excellent core protection for high-drain home inverter backups, marine leisure systems, RV power lines, and custom DIY setups.
4. Crucial Workshop Installation Safety Best Practices
⚠️ Critical Wiring Sequence Safeguard
To prevent permanent internal damage to the BMS circuitry, operators must follow these exact implementation protocols:
Never plug the balance sampling cable into the BMS board first. > 2. Always solder/weld all balance wires directly to the battery cell terminals starting cleanly from the total negative (B-) up to the final positive (B+).
Verify the voltage increments across each wire channel using a multimeter.
Only after ensuring the wiring layout is solid and completely free of virtual welding should you plug the connector harness securely into the DALY board socket.
5. Commercial Warranty & Sourcing Parameters
| Service Parameter | Support Framework |
| Warranty Guarantee | Backed by a 1 Year Manufacturer Warranty protecting operations against internal manufacturing defects and chip errors. |
| Ecosystem Assistance | Facilitated completely by EV Nexo Mart. Includes step-by-step compatibility matching, system configuration advice, and direct factory warranty coordination. |
For rapid technical assistance, engineering schematic confirmations, or to book one of the remaining four units in stock, please reach out to the EV Nexo Mart technical fulfillment desk via WhatsApp, email, or our dedicated commercial ordering lines.
