What is the energy density and cycle efficiency of the battery?

‌A battery is like a small 'energy warehouse', but the 'storage capacity' and 'electricity efficiency' of different batteries vary greatly. These two key indicators determine where the battery is suitable for use and how long it can last.

1. Energy density: How much electricity can a battery store? ‌

Energy density refers to how much energy a battery can hold. For example, for batteries of the same size, those with higher energy density can store more electricity, just like a big backpack can pack more books than a small book.

Why is it important? High energy density allows batteries to be smaller and lighter, but with sufficient power.

2. Cycle efficiency: How much energy is used for charging? ‌

Cycle efficiency is' charging without waste '. For example, if you charge a battery with 10 degrees, but only use 9 degrees, the efficiency is 90%. The remaining 10% may become wasted heat.

High efficiency batteries save more electricity! For example, storing solar power in batteries would be a pity if the efficiency is low and half of it is wasted.

The energy density determines the "multi energy pack" of the battery. ‌

The cycle efficiency determines how much of the charged electricity is truly usable.

At present, both lithium batteries are good, but there may be even more powerful batteries in the future!