CAPACITY: High-performance 4.0Ah lithium-ion battery delivers extended runtime and consistent power output throughout discharge VOLTAGE: 20-volt power system provides reliable performance for various power tools and equipment COMPATIBILITY: works with ROYAL GARDEN 20V power tools BATTERY LIFE: Advanced cell technology helps maintain optimal performance through hundreds of charging cycles POWER MANAGEMENT: Built-in temperature control and voltage protection prevents overheating and extends battery lifespan Power up your cordless tools with this robust 20V lithium-ion battery pack. With a substantial 4.0Ah capacity, this battery delivers extended runtime for your power-hungry tools and equipment. The lithium-ion technology ensures consistent power output throughout the discharge cycle, while minimizing self-discharge during storage. This battery pack is designed for optimal performance in various temperatures and working conditions. Its compact and lightweight design helps reduce user fatigue during extended use. Perfect for professionals and DIY enthusiasts alike, this battery pack keeps your tools running longer, letting you complete more tasks without frequent recharging. The battery features built-in protection against overcharging, over-discharging, and overheating for enhanced durability and reliability.