The battery is divided into three types: nickel cadmium, nickel -metal hydride and lithium
batteries. Nickel -cadmium batteries have basically eliminated due to standby, short call time and memory effect. Common nickel -metal hydride and lithium batteries, under the same volume, lithium batteries standby and call time longer than nickel -metal hydride batteries, but the price is higher than that of nickel -metal hydride batteries. But no matter what kind of battery you choose, each mobile phone is best equipped with two batteries or a mobile power supply, which does not delay the call due to no backup battery.
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