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Safety, convenience and reliability of wearable device

Safety, convenience and reliability of wearable device
To avoid these problems, lithium-ion batteries require constant current (CC), constant voltage (CV) of the charging process. In the process, battery first with fixed charging current until the set voltage is reached. Then the charging circuitry switches to the constant voltage mode, so as to provide the necessary current to maintain the set voltage.
For best charging results, selection of current and voltage levels must be carefully weighed. High voltage charge battery capacity can be increased, but high voltage will cause pressure or overcharge, resulting in permanent injury, instability and danger. Similarly, a higher charging current charging rate can be speeded up, but at the cost of reduced battery capacity: 30% lower charging current can increase their battery charge by as much as 10%.
Therefore, the charging current is typically set to the battery capacity (the maximum current of the battery can last for an hour) half the 4.2 v voltage settings for each core. But it turns out, using a slightly smaller charging current and voltage can slow the aging batteries, enabling it to spend more with higher storage capacity of rechargeable battery recycling.
Wearable device market is growing rapidly, and will continue to grow in the coming years. System power consumption and energy potential of progress has been made. But we can wear equipment gets energy from their environment also aim to charge for a long distance. Therefore, the wearable device and other feature-rich Internet applications still require the use of rechargeable batteries.
Lithium-ion batteries of small volume, light weight, large capacity, helps design engineers meet size limitations, while providing consumer satisfaction with long battery life. The higher voltage means fewer batteries are needed, which can further reduce the size and increase design flexibility.
But the charging of these batteries require more complex solutions to ensure secure and efficient charging.