他们是在便携电子产品领域中最流行的一种电池类型，具有最好的能重比，没有记忆效应，并且在不使用的情况下，充电损失比较慢。
They are one of the most popular types of battery for portable electronics, with one of the best energy-to-weight ratios, no memory effect, and a slow loss of charge when not in use.
除了它比较轻之外，它不受任何记忆效应的影响——电池没有耗竭就充电会导致容量上有损失，这种效应称为记忆效应。
Besides being light, it does not suffer from any memory effect, which is the loss in capacity when a battery is recharged without being fully depleted.
他说，这种新电池可以在充放电2000次以后，仍保持百分之九十的存储容量(传统的可充电电池在充放电500次后会损失大约三分之一存储容量)。
He says that the startup's battery keeps 90 percent of its storage capacity after 2,000 charges (traditional rechargeable batteries lose nearly a third of their capacity after about 500 charges).
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