The FLEX FX0121-1 5.0Ah Lithium-Ion Battery powers your FLEX 24V tools with smart efficiency and cooling that actually helps you finish the job faster. Built for pros and DIYers who hate downtime, this battery delivers dependable performance when you need it most.

Key Features & Design

• 24V Lithium Technology—High-energy cells designed to maximize power delivery for FLEX 24V tools.
• THERMA-TECH™ heat management—Innovative cooling system that minimizes heat and boosts runtime.
• New cooling system minimizes heat for 25% longer runtime compared to standard setups.
• POWER IQ—Intelligent power management that monitors and optimizes the cells for overload protection and higher power.
• DROP, DUST AND WATER RESISTANT—Engineered with a shock-resistant design and sealed electronics for tough job sites.
• Patented dual-sided fuel gauge—Quickly view battery charge from multiple angles, so you’re never guessing.
• FAST CHARGING—Two fast-charging options: 160W Fast Charger (60 mins) and 280W Rapid Charger (30 mins).
• FLEX 24V cross-compatibility—Compatible with all FLEX 24V batteries, chargers and tools for a seamless ecosystem.
• End-to-End 5 Year Warranty—Register to receive a full 5-year warranty on FLEX 24V tools, batteries and chargers. FLEX Limited Lifetime Warranty when registered within 30 days of purchase at registermyFLEX.com through December 31, 2024.

Specs

• Battery Lock System: Durable design prevents accidental disconnection during recharging
• Battery Type: Lithium-Ion
• Voltage: 24V
• Capacity: 5.0Ah
• Power: 960W
• Energy: 120Wh
• Battery Weight: 2.1 lbs, 1 kg
• 24V 160W Fast Charger Charge Time: 60 Mins
• 24V 280W Rapid Charger Charge Time: 30 Mins
• 5 Year Warranty