FirstPower 3.7Ah 14.4V DW9091 Battery — Compatible with Dewalt 14V XRP Tools | Ni-MH Upgrade

Upgrade Your cordless toolkit with confidence

The FirstPower 3.7Ah 14.4V battery is engineered to complement your DEWALT 14V tools and chargers. This Ni-MH upgrade balances higher capacity with reliable safety, helping you keep momentum on demanding projects without frequent recharges. It’s a thoughtful choice for DIYers, tradespeople, and hobbyists who value consistent power and dependable performance.

Key benefits at a glance

• Upgraded 3.7Ah capacity for longer use-between-charges, reducing downtime during critical tasks.
• Ni-MH chemistry with no memory effect, allowing flexible charging and discharging without loss of capacity.
• Built-in protections against overcharging, overheating, and short circuits for safer operation.
• 40% more run-time compared to standard batteries in XRP-class tools, helping you complete jobs sooner.
• Manufacturer-tested compatibility with Dewalt 14V tools and OEM-style charging interfaces for a seamless swap.

What you get and how it helps

• One FirstPower 14.4V battery featuring a 3.7Ah Ni-MH cell design tailored for robust power delivery.
• Broad compatibility with DEWALT 14V tools and chargers, including popular XRP models and related units.
• Reliable performance in daily work—from drilling and fastening to light grinding and finishing tasks.
• Support options including a 30-day money-back window and a 1-year warranty for peace of mind.

Real-world use often reveals the practical benefits of a higher-capacity battery: steadier power on longer projects, fewer interruptions, and a straightforward swap that's easy for quick job-site changes. While results depend on tool model and workload, this battery is designed to offer an approachable upgrade to your existing DEWALT 14V setup, helping you stay productive without overhauling your toolkit.