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锂离子电池要求多周期支持，以最大限度地提高正常运行时间
便携式设备的充电系统并不总是在设计上给予高度重视，但它可以在系统的电池寿命中发挥重要作用，并适当优化，可以允许使用较小的电池组比其他需要的。不仅是小型电池管理控制器的需要，但智慧也需要部署战术让电力系统被正确优化。本文将着眼于锂离子化学在充电方面的需求和什么技术可以用来最大限度地提高能量传递和存储和总结的关键解决方案可用于此目的。
锂离子（李离子）电池化学大大提高了便携设备的功率密度相比，旧技术，如镉镍，与它，这些系统的正常运行时间在一个单一的收费。李离子有一半的自放电率的镍镉和镍金属氢化物的化学物质，这也有助于保质期，允许设备被运送充电，使客户不必堵塞他们的购买前使用它们。
The downside of Li-ion compared to earlier chemistries is that charging is more complex than with older technologies. However， careful management can be employed to maximize the power delivery of li-ion not only to provide users with a better experience， but also allow designs to be downscaled to use smaller batteries. As the battery is a significant proporTIon of the size and weight of wearables， any saving made here that can be made through the subsTItuTIon of one charging circuit for another can be dramaTIc.
The key issue with Li-ion batteries is that they are highly sensitive to overcharging， since too high of a voltage will introduce material stress that shortens the life of the battery. They also present a risk to safety if charged beyond a voltage of 4.2 V per cell.
