Protect and secure your Nikon MB-D12 battery pack with the BL-5 Battery Chamber Cover, an essential accessory for serious photographers. This durable cover is designed to work with the MB-D12, MB-D17, and MB-D18 battery packs in conjunction with the EN-EL18 rechargeable lithium-ion battery, enabling extended shooting sessions on compatible Nikon DSLR cameras including the D800, D800E, D810, D850, and D500. Crafted from sturdy materials, the BL-5 provides reliable protection against the elements whilst maintaining a snug, secure fit. Whether you're capturing landscapes in demanding conditions or shooting events that require extended battery life, this cover ensures your battery compartment stays well-guarded so you can focus on creating stunning images with confidence. Battery not included.