NWJ48 Dell 720mAh 2.6Wh 3.7V Raid Controller Battery for PERC H740/H840

The NWJ48 is a Dell‑specified RAID controller battery designed for use with PERC H740 and H840 storage adapters, providing a reliable power source to protect cached data during unexpected power loss. Featuring a 720 mAh capacity, 2.6 Wh energy rating and a nominal 3.7 V output, this battery matches the original equipment specifications for seamless integration and consistent performance. Its form factor and connector layout are engineered for direct replacement of the factory unit, simplifying installation and minimizing downtime. Ideal for maintaining data integrity in enterprise environments, the NWJ48 ensures that critical write‑back cache remains secured until power is restored.