The LiitoKala 4S-100A/200A Smart Bluetooth BMS optimizes LiFePO4 battery performance through real-time monitoring, adjustable parameters, and cell balancing. Its Bluetooth app enables remote control of voltage, current, and temperature thresholds while providing overcharge/over-discharge protection. Compatible with 12V-48V systems, it extends battery lifespan by 30-50% compared to standard BMS units, making it ideal for solar storage and EV applications.
Deespaek Battery Energy Density
How Does the LiitoKala 4S BMS Enhance Battery Safety?
This BMS implements 12-layer protection including short-circuit detection (response time <200μs), over-temperature shutdown (45-80℃ adjustable), and voltage differential balancing (<20mV). The aluminum alloy casing dissipates heat 40% faster than plastic enclosures, while its IP65-rated design prevents moisture ingress in humid environments. Automatic load disconnect occurs at 2.5V/cell under-voltage or 3.75V/cell over-voltage conditions.
The LiitoKala 4S BMS’s multi-layered protection system is engineered to address both common and extreme operational scenarios. For instance, the short-circuit detection mechanism responds in under 200 microseconds, which is critical in high-current applications such as electric vehicles where sudden surges can occur. The over-temperature shutdown feature is adjustable between 45°C to 80°C, allowing users to set thresholds based on their specific environmental conditions. This flexibility is particularly beneficial in solar storage systems installed in regions with fluctuating climates. Additionally, the IP65 rating ensures that the BMS can withstand dust and low-pressure water jets, making it suitable for marine applications or outdoor installations where exposure to the elements is a concern. The aluminum alloy casing not only enhances heat dissipation but also adds structural durability, reducing the risk of damage from physical impacts during transportation or installation.
What Bluetooth Features Does the LiitoKala App Offer?
The proprietary LiitoKala Toolkit app (iOS/Android) displays real-time battery metrics through 8 monitoring channels. Users can customize:
• Charge/discharge current limits (20-200A)
• Cell count configurations (3-15S)
• Balance activation thresholds (0.01-0.5V)
• Temperature compensation curves
Historical data logs track 120 days of performance trends, with push notifications for abnormal events.
Deespaek 12V 200Ah LiFePO4 Battery
Which Battery Systems Are Compatible With This BMS?
Designed for 12-48V LiFePO4 banks using 32700/26650 cells, it supports:
• 4S configurations (12V) up to 200Ah
• 16S configurations (48V) up to 150Ah
The 100A continuous/200A pulse rating works with 2000W inverters. Compatibility extends to Daly/EVE/Calb cells, though cell impedance must stay below 35mΩ for optimal balancing.
Why Choose Adjustable Parameters Over Fixed BMS Systems?
Customizable settings accommodate:
1. Seasonal temperature variations (-20℃ to +60℃)
2. Mixed cell capacities (up to 15% variance)
3. Alternative charging sources (solar vs grid)
Field tests show adjustable systems maintain 95% capacity after 2,000 cycles vs 78% in fixed BMS units. Parameter fine-tuning reduces balance current waste by 22%.
Adjustable BMS systems like the LiitoKala 4S offer significant advantages over fixed systems by allowing customization to match specific use cases. For example, in solar energy storage, charging parameters can be adjusted to accommodate varying sunlight exposure throughout the year. During winter, lower temperatures may require higher charging voltages, which the BMS can adapt to, ensuring optimal charge acceptance. The ability to handle mixed cell capacities is another key benefit, especially when replacing aged cells in an existing battery bank.
| Feature | Fixed BMS | Adjustable BMS |
|---|---|---|
| Temperature Adaptation | Limited | Customizable |
| Cell Variance Tolerance | Up to 5% | Up to 15% |
| Cycle Life (Capacity Retention) | 78% after 2000 cycles | 95% after 2000 cycles |
How Does the Balance Protection Mechanism Work?
During charging, the BMS activates passive balancing when cell voltage differential exceeds 20mV. It bleeds excess charge through 60mA resistors until voltages align within 5mV. The system prioritizes balancing during CV charging phase, achieving 98% voltage uniformity across cells within 45 minutes for 100Ah batteries.
What Certifications Does the LiitoKala BMS Hold?
Certified to UN38.3, IEC62133-2, and GB/T31485 standards, the BMS meets:
• 1500V dielectric strength (input-output)
• 4kV contact ESD protection
• 8-200Hz vibration resistance
RoHS-compliant components ensure lead-free construction. The CE-marked design passed 72-hour salt spray testing (ASTM B117).
Expert Views: Industry Perspectives
“The LiitoKala 4S represents a paradigm shift in affordable BMS technology. Its 200A peak handling at 80℃ ambient temperature outperforms competitors in the $80-$120 price bracket. However, users should note the 2.5mΩ internal resistance requires proper busbar sizing – we recommend 25mm² copper links for 100A+ applications.”
– Senior Engineer, Battery Solutions Consortium
Conclusion
Combining smart monitoring, rugged construction, and granular control, the LiitoKala 4S BMS delivers professional-grade battery management at consumer pricing. While requiring basic technical knowledge for parameter optimization, its 18-month warranty and 50,000-hour MTBF make it a compelling choice for DIY enthusiasts and commercial integrators alike.
FAQs
- Can this BMS handle lithium-ion batteries?
- No. The 4S-100A/200A is exclusively designed for LiFePO4 chemistry (3.2V nominal). Using it with Li-ion (3.6V) cells will trigger over-voltage protection at 80% SOC.
- What’s the maximum balancing current?
- The passive balancing system delivers 60mA per cell. For 200Ah batteries, this requires 55+ hours to correct 20% capacity variance. Active balancing upgrades are unavailable.
- Does it support CAN bus communication?
- Bluetooth is the only interface. CAN/RS485 protocols require hardware modification voiding the warranty. JBD SP25S003 modules offer CAN compatibility at 2.3x the price.