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Rechargeable batteries can re-use and reduce pollution. But they not only add some cost to user but also can not take at any time anywhere; especially they are not convenient to take in outdoors or in a tour. Parent-child Charger combines the function of charger and battery, so you needn’t buy a battery charger, and gain electric power without battery charger. The Parent-child Charger (outside) is a charger itself, it can contain two rechargeable batteries. When using it, two rechargeable batteries provide electric power inside. When using small batteries, you take out the small rechargeable batteries from Parenting-Battery and use them.
FAN SHI ZHONG, STONE FAN, SHIZHONG STUDIO