Battery Safety Tips for Drone Owners

Drones rely heavily on their batteries for power, making proper battery management essential for safe and successful flights. Here are some detailed tips to ensure the safe handling and maintenance of drone batteries:

Tip 1: Handle with Caution and Retire Early

Drone batteries, typically lithium-polymer (Li-Po) or nickel-metal hydride (Ni-MH), demand careful attention due to their potential hazards. Lithium particles can ignite on contact with oxygen, and exposure to moisture can lead to dangerous reactions. If you notice any signs of damage, swelling, or uncertainty regarding the battery's history, it's crucial to retire the battery immediately. Dispose of it following your local hazardous waste disposal guidelines to prevent any risks.

Figure 1. Example of swollen battery cell that should be retired.

Tip 2: Use Li-Po Bags and Ammo Boxes for Storage 

When storing drone batteries, it's advisable to use individual Li-Po bags to contain any potential issues. These specialized bags are designed to mitigate the risk of fires or explosions. For an extra layer of protection, consider placing the Li-Po bags inside steel ammo boxes. However, ensure that these boxes have vent holes to release pressure in the event of a battery failure. Storing these boxes in well-ventilated areas away from flammable materials adds an additional safety measure.

Figure 2. A Li-Po safety bag which is available for purchase from many online retailers

Figure 3. Steel ammo boxes can provide a second level of safety when storing dangerous materials

Tip 3: Transport Batteries in Foam Cases 

Invest in foam cases specifically designed for transporting drone batteries. These cases provide adequate protection during transit, preventing damage to both the batteries and surrounding equipment. Avoid using battery chargers for transportation, as it may compromise safety and lead to potential risks.

Figure 4. A hardened GPC case used to store TB60/TB65 and WB37 batteries used with the M300/M350 RPAS from DJI

Tip 4: Fire Fighting Equipment

In case of a battery-related fire, it's crucial to prioritize safety and act swiftly. Keep fire extinguishers and fire blankets readily accessible to extinguish any flames. However, it's essential to evacuate the area and contact emergency services immediately in such situations. Additionally, consider obtaining proper training on how to use firefighting equipment effectively to ensure your safety and those around you.

Tip 5: Perform Regular Battery Maintenance 

Maintaining drone batteries is essential to prolong their lifespan and ensure safe operation. Follow the manufacturer's maintenance guidelines meticulously, focusing on balancing individual cells and monitoring cell variances. Regular maintenance routines, such as discharging the batteries to a specific level and recharging them, can help maximize their performance and reduce the risk of potential issues.

Figure 5. Storing fire blankets near is highly recommended in the event of unforeseen emergencies

Figure 6. Batteries should be retired if there is a variance of more than 0.01 Volts between cells

Tip 6: Trust Your Instincts

While adhering to safety protocols is crucial, trusting your instincts and employing common-sense practices is equally important. As you gain experience with drone batteries, develop your intuition, and refine your safety measures accordingly. Stay informed about battery safety guidelines specific to drones and seek advice from experts if needed.

In conclusion, prioritizing battery safety is paramount for drone owners to ensure safe and successful flights. By following these detailed tips and remaining vigilant, you can mitigate risks and enjoy worry-free drone operations.