Professional battery supplier. Please confirm the part number before . If you have any questions, contact us through the platform and we will respond as soon as possible. Key benefits Reliable replacement power: 18.0V Liion battery delivering 4000mAh and 72.00Wh to restore runtime for compatible devices. Consistent performance: capacity cell composition provides stable voltage and sufficient energy for extended operation. Direct compatibility: Designed to match devices that use part numbers 4511396, 4511437neu, 4511437OVP, reducing fit and functionality issues. Easy installation: Form factor and dimensions match original battery housings for straightforward replacement. Main specifications Battery type: Liion Voltage: 18.0V Capacity: 4000mAh Energy rate: 72.00Wh Size: 120.40 x 76.50 x 66.90 mm Gross weight: 816.8 g Compatible part numbers: 4511396, 4511437neu, 4511437OVP How this battery solves common problems Restores lost runtime from worn or aging batteries by providing full rated capacity. Eliminates unpredictable shutdowns by delivering stable 18V power under typical loads. Simplifies maintenance by offering a dropin compatible unit for the listed part numbers. Typical use scenarios Power tools: a depleted battery in drills, saws, or other portable tools that accept the listed part numbers to regain worksite productivity. Workshop and field equipment: Use as a spare or replacement for devices requiring 18V, 4000mAh power to minimize downtime during projects. Portable electronic systems: Support devices that rely on a mediumcapacity Liion pack for consistent operation during extended tasks. and support Please confirm the part number before to ensure compatibility. 30day money back guarantee. 365day . 24hour timely feedback for inquiries and support.