Ni-Mh Battery is composed of hydrogen ion and nickel metal, and the power reserve is 30% more than Ni-Cd battery, and it is lighter, no pollution to environment, has longer service life. Its disadvantage is the price is much more expensive, performance is worse than Li-Polymer Battery.
Lithium battery is a kind of battery made of lithium metal or lithium alloy as anode material and uses non-aqueous electrolyte solution. Now it has become the mainstream.
Rechargeable Lithium Battery has small volume, light weight, low self discharge rate, no memory effect, it is widely used in many new mobile devices.
The lithium battery is small and has large specific energy, the voltage of a single lithium battery is 3 times of Ni-Mh battery. Without memory effect, it can be used with the charge. But also can not use a charge, number of charging and discharging too much will affect the battery life. Lithium battery should not be stored for long time, or it will lose part of capacity forever.
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