While standard lithium batteries stop charging at 32°F (0°C), the Renogy Core Mini with DuoHeat Tech works down to -22°F (-30°C). This ensures uninterrupted power during winter storms, cold snaps, and freezing conditions when you need it most.

The battery’s performance depends on two key factors: outside temperature and battery cell temperature.
• Charging: Works in temperatures as low as -22°F (-30°C).
• Discharging: Operates in temperatures down to -4°F (-20°C).
But if the cell temperature drops below 32°F (0°C), the battery’s protection system will stop charging. To fix this, let the built-in Duo Heating Pad System warm up the battery or move it to a warmer place. Once the cell temperature reaches 32°F (0°C), charging will start again.

• Outside temperature is the air temperature around the battery, like 14°F (-10°C) outdoors.
• Cell temperature is the battery’s internal temperature. It changes slower than the outside temperature.
For example, if you bring a cold battery indoors, the cell temperature will take some time to warm up. The cell temperature is what decides if the battery can work.

Powered by DuoHeat Tech, our advanced dual-heating pad system provides 110W of intelligent thermal control. Here’s how they work:
• When the cell temperature drops to 41°F (5°C), the heating pads turn on automatically to warm the cells.
• When the cell temperature reaches 50°F (10°C), the pads turn off.
This means the battery can safely charge while heating itself when the temperature is between 32°F (0°C) and 41°F (5°C). Above 32°F (0°C), it charges normally.

What should I do if my battery won’t charge due to low-temperature protection? To safely address this issue, please follow these steps carefully:
1. Inspect the battery:
• Check the battery for any visible damage, corrosion, or loose terminals.
• Ensure it is safe to handle and shows no signs of swelling or leakage. 2. Warm it up naturally:
• Move the battery to a warmer location (above 0°C / 32°F).
• Allow the battery to warm up gradually for 1–2 hours.
• Do not attempt to charge or use the battery while it is warming up, as this could cause damage or unsafe conditions.
3. Check the connections:
• Always wear safety goggles when working with batteries.
• Use insulated tools to inspect the battery terminals, ensuring they are secure.
• If you notice corrosion, carefully clean it with a soft, dry cloth. Avoid using metal objects to scrape the terminals.
4. Connect the charger:
• Attach the charger to the battery terminals, ensuring the polarity (+/-) is correct.
• Confirm all connections are secure and avoid touching exposed metal parts.
• Monitor the charging process closely to ensure everything functions correctly and safely.
5. Verify after charging:
• Once the charger indicates the battery is fully charged, disconnect it and allow the battery to rest for 30 minutes.
• Check the battery voltage to confirm it is within the normal operating range.
6. Test with a small load:
• Connect a low-power device, such as a small light, to verify the battery is functioning properly.
• Gradually test with higher-power devices, but continuously monitor the battery temperature to ensure safe operation.

To get the best performance from your battery in cold conditions, follow these tips:
1. Keep Within Safe Temperatures:
• Charging Temperature Range: -22°F to 131°F (-30°C to 55°C). Self-heating activates below 41°F (5°C).
• Discharging Temperature Range: -4°F to 140°F (-20°C to 60°C).
• If the environment drops below -4°F (-20°C), the battery may not discharge properly. Avoid ultra-low temperatures when possible.
2. Properly Use the Self-Heating Function:
• Ensure at least 10A charging current per battery for activation.
• The function will automatically turn on below 41°F (5°C) and stop at 50°F (10°C).
• For optimal performance, avoid placing the battery in environments where the temperature remains consistently below -4°F (-20°C).
3. Avoid High-Load Discharging:
• In cold conditions near the discharging limit -4°F (-20°C), avoid connecting high-power devices. This helps prevent triggering protection mode or damaging the battery.
4. Store Safely:
• Storage Temperature Range: 32°F to 95°F (0°C to 35°C). Avoid prolonged exposure to extreme cold, as even with low-temperature protection, long-term exposure can degrade performance.
• For long-term storage, keep the battery at 30%-50% charge and recharge every 3-6 months to maintain health.
5. Inspect Regularly:
• Check for any physical damage, and ensure the connection ports are clean and corrosion-free.
• In extreme cold, regularly monitor the battery voltage and status to ensure it remains in optimal working condition.

The advanced Battery Management System (BMS) offers comprehensive protection through intelligent monitoring and control. With over 25 safety features—covering temperature, current, voltage, and circuit protection—the system automatically safeguards against common risks and extreme conditions. This professional-grade protection ensures reliable performance while keeping your system secure.
Key protections include charge/discharge safety, temperature regulation, cell balancing, and reverse polarity prevention. Each feature works seamlessly together, ensuring your battery operates safely under any condition.

The Renogy Core Mini offers outstanding longevity with 5,000+ cycles at 80% DOD—up to 15 times longer than traditional lead-acid batteries, which typically last 300-800 cycles. This superior cycle life ensures years of reliable service, reducing replacement costs and maintenance. With professional-grade LiFePO4 cells, you get more power, a longer lifespan, and better value for your investment.

The Renogy Core Mini 12V 100Ah battery integrates seamlessly with most standard solar equipment. While it works with conventional charge controllers and inverters, using LiFePO4-compatible chargers ensures optimal performance and longevity. Our technical support team and comprehensive installation guides help you maximize your system's potential with minimal hassle.

The Renogy 12V 100Ah LiFePO4 battery does not have built-in Bluetooth monitoring, but it is compatible with Renogy’s external monitoring devices. These devices enable you to track real-time battery status, current usage, and overall health, giving you a comprehensive view of your power system.