The Grade A 12V 100Ah LiFePO4 Battery Pack excels in solar systems due to its high energy density, 4S configuration with 100A BMS for stability, and LCD display for real-time monitoring. It offers 3,000–5,000 cycles, operates in -20°C to 60°C, and integrates seamlessly with inverters, making it ideal for off-grid and renewable energy setups.
Deespaek Battery BMS Performance
How Does the 4S Configuration Enhance Performance in LiFePO4 Batteries?
The 4S (4-series) configuration balances voltage output and capacity, delivering 12.8V nominal voltage for consistent power delivery. This setup minimizes voltage drop during high-current applications like EV acceleration or solar load surges, while the 100A BMS ensures cell balancing, overcharge/discharge protection, and thermal stability, prolonging cycle life.
The 4S configuration optimizes energy delivery by maintaining uniform charge across all cells. In LiFePO4 chemistry, cell balancing is critical to prevent capacity mismatch. The BMS actively monitors each cell’s voltage with ±25mV precision, redistributing energy during charging cycles. This ensures all cells age uniformly, which is particularly important in solar systems where partial shading can cause uneven discharge rates.
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| Configuration | Voltage | Typical Use Case |
|---|---|---|
| 3S | 9.6V | Low-power robotics |
| 4S | 12.8V | Solar/RV systems |
| 8S | 25.6V | Commercial energy storage |
For electric vehicles, the 4S setup provides sufficient torque while keeping currents below 100A, reducing heat generation. This configuration also allows safe series expansion – connecting four 4S packs creates a 48V system without voltage spikes.
72V Lithium Batteries for High Power
What Safety Features Are Integrated into the 100A BMS?
The 100A Battery Management System (BMS) includes multi-layer protections: over-current (150A cutoff), cell voltage monitoring (±25mV accuracy), temperature sensors (-20°C–80°C range), and short-circuit shutdown (μs response). Its passive balancing redistributes energy at ±50mA during charging, preventing cell drift and ensuring ±1% capacity matching across the 4S pack.
Advanced thermal management sets this BMS apart. Three NTC sensors track temperature gradients across the pack, dynamically adjusting charge rates. If any cell exceeds 60°C, the BMS reduces current by 50% while maintaining critical loads. The system also features redundant disconnect mechanisms – both MOSFETs and mechanical relays engage during fault conditions.
| Safety Feature | Activation Threshold | Response Time |
|---|---|---|
| Over-current | 150A (5 sec) | 20 ms |
| Over-voltage | 3.65V/cell | 50 ms |
| Under-voltage | 2.5V/cell | 100 ms |
Cell voltage monitoring occurs at 100Hz frequency, enabling early detection of micro-shorts. The BMS logs all protection events, accessible via the LCD interface. This diagnostic capability helps users identify recurring issues like persistent over-discharge in specific battery cycles.
Expert Views
“The integration of a 100A BMS with Grade A cells sets this LiFePO4 pack apart. Most competitors use 50A–80A BMS units, which throttle performance. The LCD’s granular data logging also empowers users to diagnose issues like partial shading in solar arrays or regen braking inefficiencies in EVs—functionality typically reserved for commercial-grade systems.” — Industry Expert, Energy Storage Solutions
FAQs
- What is the lifespan of this LiFePO4 battery?
- 8–10 years at 80% DoD cycles (3,000–5,000 cycles), assuming ambient temps ≤35°C. Capacity degrades to 80% after 3,500 cycles per IEC 61427 testing.
- Can I charge it with a standard lead-acid charger?
- No. Use a LiFePO4-specific charger with 14.6V absorption/13.6V float. Lead-acid profiles risk overcharging (≥15V), triggering BMS shutdown. Recommended: 20A–40A chargers with temp compensation.
- Is parallel connection supported for higher capacity?
- Yes. Up to 4 packs in parallel (12V 400Ah). Ensure <0.1V difference between packs before connecting and use 35mm² cables with 150A fuses per unit to prevent reverse current.