16 replacement power cable for Night Vision Systems - 4-Pin ANVS / LEMO connector on one end, Fischer / BNVD connector on opposite end - Connects GPNVG-18 and PVS-31 night visions systems to ANVIS connector battery packs - Works with most ANVIS spec battery packs (as wiring can vary between battery pack manufacturers we cannot guarantee compatibility with 100% of battery packs). Use your legacy ANVIS / LEMO connector type battery packs with modern BNVD / Fischer connector night vision systems (PVS-31, etc). 4-Pin ANVS / LEMO connector on one end, Straight Fischer / BNVD connector on opposite end. Works with most ANVIS spec battery packs (as wiring can vary between battery pack manufacturers we cannot guarantee compatibility with 100% of battery packs).