Lithium solar container battery minus 30 degrees

Charging: Never charge below 0°C! Preheat to 5-10°C. Discharging: Limit rate ≤0.2C. Storage: Maintain 15-25°C with 30-50% SOC. SEI Layer Breakdown: Accelerated electrolyte decomposition. Thermal Runaway: Risk ↑ exponentially above 60°C. Charging: Reduce voltage (≤3.8V/cell) and current (≤0.5C). [pdf]