Ultraxxis 18V 6000mAh Replacement Batteries for Ryobi — 2-Pack with LED Indicator & Protection Circuitry

Two Ultraxxis 18V 6000mAh lithium-ion batteries designed to replace Ryobi 18V packs and keep cordless tools running longer between charges.

These Ultraxxis replacement batteries deliver higher capacity for extended runtime while fitting into Ryobi 18V tool slots (including P102, P103, P104, P105, P107, P108, and P109 models). Built-in safety electronics guard against overcharge, over-discharge, over-current, over-voltage and overheating, and a clear LED power indicator shows remaining charge so you know when to swap or recharge. The pair offers a practical, cost-effective way to add backup power for job sites, home projects or yard work.

How much longer will these batteries run compared with standard Ryobi packs?

With 6000mAh capacity each, these Ultraxxis cells typically provide significantly more runtime than many original 18V packs with lower amp-hour ratings. Actual run time depends on tool type and workload, but you can expect noticeably fewer interruptions for recharging on moderate-to-heavy tasks.

• Capacity: 6.0Ah (6000mAh) per battery for extended use.
• Voltage: 18V compatible with Ryobi 18V system tools listed.
• Quantity: Two batteries included for immediate backup.

Are these batteries safe to use in my Ryobi tools?

Ultraxxis packs include protection circuitry that helps prevent damage from overcharging, over-discharging, over-current, over-voltage and excessive heat. They are manufactured as lithium-ion replacements intended to fit Ryobi 18V tool interfaces, but always follow your tool and charger manufacturer instructions when installing third-party batteries.

• Multiple protections built into the battery pack for safer operation.
• Compatibility with P102, P103, P104, P105, P107, P108, P109 Ryobi 18V models.
• Use recommended chargers and avoid physical damage or moisture exposure.

How can I check remaining charge and know when to recharge?

Each Ultraxxis battery includes an LED power indicator that visualizes remaining energy so you can plan swaps or charging before the pack runs flat. The indicator gives quick feedback without needing to attach the battery to a tool or charger.

• LED indicator displays residual power level at a glance.
• Helps prevent unexpected downtime by signaling when to charge.
• Easy visual check on the worksite or in the tool bag.

What warranty or support is available if I have issues?

Ultraxxis provides customer service support and stands behind their replacement batteries with responsive assistance for problems or questions. Contact their team for troubleshooting, compatibility questions, or warranty claims to get help quickly.

• Customer support available to address product concerns.
• Guidance on compatibility, charging, and safe use.
• Instructions for initiating returns or warranty service when needed.

Who is this for? These Ultraxxis 18V 6.0Ah replacement batteries are aimed at contractors, hobbyists and homeowners who want reliable, longer runtime for Ryobi 18V cordless tools without buying new tool-specific packs. They suit anyone needing immediate backup power on job sites, seasonal yard work, or extended DIY projects and who values safety features and an easy-to-read LED charge indicator.