When Batteries Are a Must-Have
5. Going Off-Grid
Despite the versatility of USB, external power supplies, and PoE, there are situations where batteries are simply the best (or only) option. These are typically projects that need to be portable, mobile, or operate in areas where there's no access to mains power.
Think of a robot navigating a room, a drone soaring through the sky, or a wearable device tracking your fitness. These applications demand a power source that can move with the device. Batteries provide that freedom and flexibility.
When choosing a battery for your Arduino project, consider factors such as voltage, capacity (measured in mAh), discharge rate, and size. Lithium-ion batteries are popular due to their high energy density and lightweight nature. However, they require proper charging and handling to prevent damage or fire hazards. Always use a battery management system (BMS) to protect your lithium-ion batteries.
Even when using batteries, you can still explore ways to extend their lifespan. Implementing power-saving techniques in your Arduino code, using low-power components, and optimizing your project's energy consumption can make a big difference. After all, every little bit helps when you're relying on battery power!