The difference in battery charging recommendations between battery-operated vacuum cleaners and robot cleaners versus devices like iPhones and electric cars is primarily due to variations in battery chemistry, usage patterns, and design considerations.
Battery Chemistry: Different devices use various types of batteries with varying chemistries. For example, many vacuum cleaners and robot cleaners use Lithium-ion (Li-ion) batteries, while iPhones and electric cars may also use Lithium-polymer (Li-poly) batteries. Each type of battery has its own unique characteristics and charging requirements.
Usage Patterns and Capacity Reserves: Vacuum cleaners and robot cleaners are typically designed for relatively short and intermittent use. Charging them to 100% ensures they have enough power to complete their cleaning tasks without interruption. These devices are not used continuously throughout the day, so they can tolerate a full charge more easily.
Battery Management Systems: Many modern devices, including iPhones and electric cars, are equipped with sophisticated battery management systems (BMS). These systems help optimize battery performance, monitor charging, and protect the battery from damage. Charging recommendations for such devices are often based on the BMS's algorithms and research on battery longevity.
Battery Degradation: Lithium-ion batteries can undergo some degree of capacity loss over time, which is commonly referred to as battery degradation. Charging a battery to its maximum capacity (100%) repeatedly can contribute to faster degradation. To mitigate this, some device manufacturers, like those making electric cars, recommend charging to a lower level (e.g., 80%) to reduce stress on the battery and prolong its overall lifespan.
Portability and Convenience: iPhones and electric cars are often designed for daily, on-the-go use. Manufacturers recommend partial charging to provide users with enough battery capacity for daily tasks while also promoting better long-term battery health.
Ultimately, the specific charging recommendations are a balance between convenience, practicality, and battery longevity. If you're unsure about the best charging practices for your specific device, it's always a good idea to follow the manufacturer's guidelines, as they have tested and designed their products with the battery's health and performance in mind.