The LE300 Smart Battery System Extension Block is a fully scalable lithium extension solution designed to enhance the capacity and lifespan of 12 V lead-acid batteries, including AGM and gel types. By integrating the LE300, users can achieve a hybrid system that combines the benefits of both lead-acid and lithium technologies.
- Capacity Extension: Easily add capacity to existing 12 V lead-acid batteries without the need for a complete system overhaul.
- Extended Battery Lifespan: The LE300's intelligent battery management system (BMS) optimizes charging and discharging cycles, significantly prolonging the life of both the lead-acid and lithium batteries.
- Plug & Play Installation: Connects directly to the positive and negative terminals of the lead-acid battery, retaining the existing charger and simplifying the installation process.
- Modular Design: Allows for future capacity expansion by connecting multiple LE300 units in parallel, accommodating increased energy demands over time.
- Temperature Resilience: Equipped with integrated cell heating, the LE300 operates effectively in cold temperatures, ensuring reliable performance in various environmental conditions.
- Vibration Resistance: Engineered to withstand vibrations and shocks, making it suitable for applications in vehicles and other dynamic environments.
- Solar Efficiency Enhancement: When the lead-acid battery reaches approximately 80% charge and charging slows, the LE300 efficiently utilizes surplus solar energy, optimizing energy storage.
Technical Specifications:
- System Voltage: 12 VDC
- Nominal Voltage: 12.8 VDC
- Voltage Range: 11 - 15 VDC
- Nominal Lithium Capacity: 28 Ah / 358 Wh
- Usable Lithium Capacity: 90% (25.2 Ah / 322 Wh)
- Number of Cycles: >3000 complete cycles
- Continuous Charging Current: Max. 12.5 A between 5 and 40°C; current is limited at higher and lower temperatures
- Battery Efficiency: > 90%
- Housing Dimensions: 175 x 229 x 67 mm
- Weight: 3.4 kg
- Connection Terminals: RAST 5/mini module 4 pin/communication interface/external display
- Recommended Wire Size: 1.5 – 4 mm²
- Ambient Temperature (Operation & Warehousing): -20 – 50 °C; maximum battery life at 15 – 25 °C; warehousing temperature 10 – 30 °C
- Low and High Temperature Protection, Heating, Charging & Discharging: Temperature sensor prevents lithium battery charge under -5°C or above 55°C cell temperature. Charging starts once cell temperature is higher than -5°C. Device has an integrated heating that is active between -20°C and 10°C cell temperature. Discharge possible between -20°C and 60°C cell temperature. At cell temperature below -20°C and over 60°C, system operates in pure lead-acid mode for higher battery lifetime.
- Lithium Cell Balancing: Battery management includes balancer
- Protection Features: Overcurrent, overvoltage, short circuit, deep discharge, wrong polarity protection
- Operation Mode/Compatible External Batteries: Works in combination with any 12 V lead-acid battery & lead-acid charge controller
- Connection Possibilities: Packs can be connected in parallel with each other. In standard version, a maximum of 24 LE300 units can be connected in parallel; higher quantities possible after consulting BOS partner.
Materials:
The LE300 utilizes LiFePO4 (Lithium Iron Phosphate) rechargeable batteries, known for their thermal and chemical stability, ensuring safety and longevity. The housing is designed to be vibration-resistant, suitable for dynamic environments.
Compatibility Information:
The LE300 is compatible with any 12 V lead-acid battery, including AGM and gel types. It operates seamlessly with existing lead-acid charge controllers, eliminating the need for system modifications. The modular design allows for future capacity expansion by connecting multiple LE300 units in parallel.
