Replacement Battery for Ajax Hub 2 Plus

Product Overview

The 27858.87.NC is an official original replacement rechargeable battery pack specifically designed for the Ajax Hub 2 Plus alarm control panel. Engineered to provide dependable backup power during electrical grid outages, this high-capacity Li-Ion/Li-Po battery ensures that the security system, cellular module, Wi-Fi, and Ethernet communications remain fully operational without interruption.

Ideal for maintenance, system refurbishments, or replacing aging power cells, it connects seamlessly to the internal power management board of the Hub 2 Plus, maintaining built-in overcharge, deep-discharge, and short-circuit protections.

Key System Features & Functionality

• OEM Compatibility: Formulated and dimensioned specifically for direct internal plug-and-play installation inside the Ajax Hub 2 Plus.

• Uninterrupted Backup Protection: Keeps the Hub 2 Plus operational for up to 16 hours during main AC power loss (depending on connected channels and activity).

• Integrated Safety Protections: Built-in PCM/BMS circuitry guards against overcharging, over-discharging, thermal overload, and short circuits.

• Direct Wire Harness Connector: Pre-fitted with the exact terminal plug required for easy internal connection without soldering.

• Real-time Status Monitoring: Fully integrated with the Hub 2 Plus power telemetry, reporting precise battery level percentages and fault status to the Ajax app.