Batteries are divided into Ni-Cd, Ni-MH and Li-ion batteries with capacities of 600mAh, 900mAh, 1100mAh, 1300mAh, 1500mAh, 1700mAh, 1800mAh, 2000mAh, 2200mAh, 2400mAh. Lithium battery more expensive, still in the development stage. Ni-Cd and Ni-MH batteries are more common, the general high-capacity battery recommended Ni-MH batteries. Battery surface, bottom shell using ultrasonic welding, solid and reliable.
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