BatPower Replacement Battery and Charger Starter Kit Compatible with Ryobi 18V System, (2) 6.5Ah High Capacity Lithium-Ion Batteries and (1) Fast Charger P108 P117 (3-Piece Set)

What It Is

This 3-piece set includes two 6.5Ah lithium-ion batteries and a fast charger, designed as a direct replacement for Ryobi’s 18V ONE+ system. It powers any Ryobi 18V tool or lawn mower (e.g., brushless mowers, trimmers, blowers) that accepts P108 or P117-style batteries.

Fitment & Compatibility

• System: Ryobi 18V ONE+ only. Not compatible with Ryobi 40V or 80V systems.
• Model check: Works with any tool that uses P108, P117, or any Ryobi 18V slide-pack battery (e.g., P100, P102, P103, P105). Common mowers: RY40180, RY40190, RY40610, RY40615.
• OEM vs aftermarket: This is a third-party (BatPower) replacement. Battery shape and slide rails match OEM, but the charger may have a slightly different footprint—measure your charging dock space (approx. 7” x 5” x 3”).
• Physical check: Batteries are slightly larger than OEM 4Ah packs. Ensure your mower’s battery compartment has at least 6” depth and 3” width clearance.

Key Things to Know

• Installation: Zero difficulty—slide battery into mower until it clicks. Charger plugs into standard 120V outlet.
• Capacity: 6.5Ah per battery is high capacity—expect 30-50% more runtime than a standard 4Ah Ryobi pack on a push mower.
• Gotcha: Aftermarket batteries may not charge on Ryobi’s original charger (they need the included BatPower charger). Don’t mix chargers.
• Quality: Batteries have built-in BMS (overcharge/short-circuit protection), but long-term lifespan isn’t proven—check reviews for failure reports after 6+ months.

Should You Buy It

Buy this if you need a cost-effective way to double your runtime for a Ryobi 18V mower or tool and don’t mind using a third-party charger. It’s a solid value at $59.99 for two 6.5Ah packs (vs. $100+ for one OEM 4Ah). Skip it if you want guaranteed OEM compatibility, need a single smaller battery, or have a 40V system.