Ultraxxis Upgrade 2-Pack 6.0Ah Batteries for Craftsman 20V – Replacement Pack

Powerful replacement for Craftsman 20V tools

Ultraxxis Upgrade delivers a 2-pack of 6.0Ah lithium‑ion batteries designed to refresh your Craftsman 20V tools. Each battery supplies 6000mAh / 120Wh of energy and is built to fit the Craftsman V20 system, working with CMCB204, CMCB202, and CMCB201 packs and the CMCB104 charger. A smooth swap means less downtime on the job and more consistent operation between charges.

These upgraded packs are lighter than traditional Ni‑Cd options, helping you maintain balance and reduce fatigue during longer sessions. The 6.0Ah capacity aims to extend run time and minimize interruptions, while no memory effect supports steady performance across many cycles. An LED indicator provides quick feedback on status and remaining capacity.

Key compatibility and safety features

• Rechargeable lithium‑ion, 20‑V system, 6000mAh/120Wh per battery
• 2-pack design for backup power during projects
• LED indicator for at‑a‑glance battery status

Practical benefits you may notice

• Potentially longer runtime per charge for smoother progress
• Reduced tool fatigue due to lighter weight compared with Ni‑Cd
• Several hundred charging cycles with stable performance over time

Protection and certification

• Built‑in microchip protections against overcharging, over-current, and short circuits
• Certified to CE, FCC, and RoHS safety standards

Real‑world use and why people choose Ultraxxis

In real-life scenarios, the batteries can support long drilling sessions, framing work, and overhead tasks without frequent recharging. The lightweight design aids control, while the LED indicator helps you plan swaps during a project break. This upgrade path is designed to be a practical choice for Craftsman users seeking dependable power without overpromising results.

Note: Performance can vary by tool and application, but the batteries are designed to offer practical improvements in run time, balance, and safety when used with compatible Craftsman 20V devices.