Sony BC-ZD1 Dual-Battery Charger for NP-FZ100 Batteries Cranes & Jib Arms It can be used as

It can be used as a replacement or extra quick release plate

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which eliminates the need for separate sound cards

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Sony BC-ZD1 Dual-Battery Charger for NP-FZ100 Batteries Cranes & Jib Arms It can be used asSony BC ZD1 Overview The BC ZD1 Dual Battery Charger for NP FZ100 Batteries from Sony is an ideal and efficient way to charge two high capacity NP FZ100 batteries simultaneously, assuring you have ample power for use at events or in applications that require continuous operation over extended periods of time. The BC ZD1 can fully charge two battery packs in 155 minutes using a separately available USB C charger. Requires a separately available USB PD