Replacement 2000mAh 9.60Wh rechargeable battery pack engineered for use with DSC 17000153, 4PHHAA2100SD22, DSCBATT2148V Security Alarm Panel, WS4920HE Wireless Repeater, and WTK5504 Wireless keypad. Key benefits Restores backup power to security devices so systems remain operational during power interruptions. Direct replacement for listed model numbers, minimizing installation time and avoiding compatibility issues. Compact capacity of 2000mAh and energy rating of 9.60Wh supports sustained device operation between charges or until mains power returns. Simple swapin replacement that helps maintain continuous monitoring and alarm readiness. What this battery does Functions as a rechargeable replacement battery pack for alarm panels, wireless repeaters, and wireless keypads that use the listed model numbers. Provides backup power for critical security components, reducing risk of downtime when primary power is lost. Designed to match the electrical capacity required by compatible units for consistent performance. Important attributes Capacity: 2000mAh Energy: 9.60Wh Function: Rechargeable replacement battery pack for security equipment and accessories Compatibility: DSC 17000153, 4PHHAA2100SD22, DSCBATT2148V, WS4920HE, WTK5504 Form factor: Compact battery pack intended to fit the original battery compartment of compatible devices Practical use scenarios Power outage backup: an aging battery in a security alarm panel so the system stays active and continues to report events while mains power is down. Equipment maintenance: Install as a service replacement in a wireless repeater to restore reliable signal extension and device uptime after a degraded battery reduces hold time. Keypad reliability: Fit into a wireless keypad to ensure user interface and local arming or disarming remain available even during power interruptions. Compatibility and installation tips Confirm your device model matches one of the listed compatibility numbers before . Install following the device manufacturer guidelines for safe replacement and proper connection. If unsure about fit or connector orientation, consult the device manual or a qualified installer. This battery pack is intended solely as a direct replacement for the specified models to help maintain uninterrupted operation of compatible security devices.