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Power your Bigblue dive light in the ocean's depths with this 18650x4G Lithium-Ion Battery Cell. Compatible with Bigblue's TL4500P, VTL5500P, VL5800P, and VL7500P dive lights, this pack consists of 4 pieces of the 18650 cell combined with a custom-designed circuit that provides a variety of built-in protection features. It operates at 14.8 volts and features a capacity of 3000mAh. The 18650x4G is included with the original light and offered here as a spare or replacement part.