Bring longer runtime to your outdoor power tools with this 40V 6.0Ah OP4040 replacement battery, built for the Ryobi 40V cordless system. Designed for a secure, drop-in fit, it’s compatible with OP4040 and related Ryobi 40V battery models including OP4060, OP4030, OP4050, and OP4026, helping you power through mowing, trimming, blowing, and other high-draw tasks with fewer battery changes. The onboard LED power indicator lets you check remaining charge quickly, while the built-in smart protection helps guard against overcharge, over-discharge, over-current, and short circuits for safer, more stable performance. A dependable backup or upgrade pack for anyone using Ryobi 40V tools who wants extended working time and consistent output.

• Battery Specification: Battery Type: Li-ion; Capacity: 6.0Ah; Voltage: 40V.
• High-Compatibility: Replacement for Ryobi 40Volt lithium battery: OP4050A OP4015 OP4026 OP40201 OP40261 OP4030 OP40301 OP4040 OP40401 OP4050 OP40501 OP40601 OP40602 Compatible with all Ryobi 40 Volt lithium-ion"
• Large Capacity: 40v battery pack, 2X longer than run time the standard 2.6Ah, with the onboard LED system. Power Indicator built in helps you finish your work more wisely."
• Safe & Stable: The built-in intelligent chip provides our battery over-charge, over-discharge, and over-current protection, short-circuit protection and voltage stabilization circuits. The battery's LED can display the power status so that you can know remaining battery power clearly .our replacement batteries are FCC, ROHS, CE certified, tested by manufacturer to match OEM products