The new style 20V Li-Ion battery for Ferrex tools is a high-quality power tool accessory designed for DIY enthusiasts and professionals alike. With a battery capacity of 4.0 and a voltage of 20V, this black battery provides long-lasting power for your tools, ensuring you can work efficiently without the need for frequent recharging. Backed by a 2-year manufacturer warranty, you can trust in the reliability and durability of this lithium-ion battery, making it a valuable investment for your home workshop or tool collection.