RYOBI 40V 4.0Ah Battery & Slim Charger Kit OP4040 + OP403A | Extended Run Time

Overview

For homeowners with a large yard or demanding outdoor tasks, the Ryobi 40V 4.0Ah battery delivers extended run time without sacrificing fade-free power in the 40V system. The 4.0Ah pack roughly doubles runtime compared with the standard high-capacity option while preserving the consistent performance you expect. The included slim charger adds convenient charging without clutter, and the on-board life indicator helps you plan your next mowing session with confidence.

What is included

• Ryobi 40 Volt 4.0Ah battery (OP4040)
• Slim charger with USB port
• Compatibility with all Ryobi 40V tools and chargers

Key benefits

The 4.0Ah battery provides longer operation between charges and maintains steady power across tasks. Its integrated LED indicator lets you check remaining life at a glance, while the over-molded edges protect against impacts in outdoor use. The high-capacity pack works with the full 40V line.

• 2x longer runtime than the standard 40V high-capacity battery
• Fade-free performance at full power throughout a session
• On-board LED battery life indicator for quick checks
• Durable design with over-molded edges for outdoor wear
• Broad compatibility with all Ryobi 40V tools and chargers
• 4.0Ah capacity for extended run time

Charger specifics

The included slim charger is compact and wall-mountable, so you can tuck it away in garages or sheds. A USB output lets you power small electronics while charging the main pack, and the charging technology is designed to protect battery life for longevity.

• USB power output for charging small devices while you work
• Compact, wall-mountable design for easy storage
• Smart charging tech to help extend battery life
• Compatible with all Ryobi 40V batteries

Durability and design

Robust housing and protective edges are built to withstand outdoor use, while a slim profile keeps handling and tool switching smooth and straightforward.

Compatibility and care

Fully compatible with the entire Ryobi 40V line, this pack is a flexible upgrade or replacement. For longevity, store in a cool, dry place and follow standard charging practices to maintain performance over time.

Real life use cases

• Large lawn mowing sessions and ongoing yard maintenance
• Hedge trimming, edging, and leaf cleanup without frequent recharges
• Backyard projects requiring steady, reliable power from a single charge

Tips for best results

• Charge fully before starting a long task to maximize run time
• Mount the charger in a convenient spot for quick top ups
• Monitor the LED indicator to plan the next charging session