BigBattery 36V EAGLE2 1.54 kWh LiFePO4 Battery with Heater and Comms
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Visit CalculatorThe BigBattery 36V EAGLE2 is a compact, rugged LiFePO4 battery designed for high-performance mobile and off-grid energy systems. Delivering 1.54kWh of usable energy at 36V, this battery features integrated self-heating, CANBus communications, and IP67 protection, making it ideal for cold-weather and demanding outdoor environments.
With 80A continuous discharge capability and scalable parallel expansion (up to 10 units), the EAGLE2 provides reliable, long-lasting power in a lightweight and durable enclosure.
Integrated Self-Heating - Automatically heats internal cells for safe charging in temperatures as low as -4°F (-20°C).
1.54kWh LiFePO4 Capacity - Delivers 40Ah at 36V with stable voltage output and long cycle life.
80A Continuous Output - Provides 3,072W continuous power with 200A peak (3 seconds).
IP67 Rated Enclosure - Built for harsh outdoor environments with full ingress protection.
CANBus Communications - Compatible with supported inverters and monitoring systems.
Expandable System Design - Connect up to 10 batteries in parallel for increased capacity.



Everything you need is included with your product.

| Category | Specifications |
| System Voltage | 36V |
| Nominal Voltage | 38.4V |
| Chemistry | LiFePO4 |
| kWh Capacity | 1.54kWh |
| Ah Capacity | 40Ah |
| Charging Voltage Range | 41.7 – 43.2V |
| Max Charge Voltage | 43.8V |
| Operating Voltage Range | 36 – 43.2V |
| Suggested Low Voltage Cutoff | 36 – 38.1V |
| BMS Cutoff Range | 31.5 – 35.3V |
| Cell Configuration | 12S |
| Max Continuous Discharge Current | 80A |
| Max Continuous Power | 3072W |
| Max Discharge Peak Current | 200A (Max 3 seconds) |
| Max Charge Current | 40A |
| Charge Temperature Range | -4°F – 131°F (-20°C – 55°C) |
| Discharge Temperature Range: | -4°F – 140°F (-20°C – 60°C) |
| Optimal Discharge Temperature Range | 59°F – 95°F (15°C – 35°C) |
| Storage Temperature Range | 23°F – 95°F (-5°C – 35°C) (Max 3 months) | 32°F – 77°F (0°C – 25°C) (Max 12 months) |
| Weight | 38 lb (17.2 kg) |
| Depth | 7.1 in (180 mm) |
| Width | 10.2 in (260 mm) |
| Height | 10.8 in (274 mm) |
| Max Connections | Up to (10) Parallel |
| Protection Rating | IP67 / NEMA 6 |
| Communications | CANBus |
| Self-Heating | Yes |
Is this battery suitable for cold climates?
Yes. The EAGLE2 includes integrated self-heating, allowing safe charging in freezing temperatures.
Can I expand capacity later?
Yes. You can connect up to 10 batteries in parallel to increase total capacity.
Is this battery waterproof?
Yes. It is rated IP67, meaning it is fully dustproof and protected against temporary water immersion.
What systems is this battery compatible with?
The EAGLE2 supports CANBus communication for integration with compatible inverters and monitoring systems.
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