Ajax Systems 27858.87.NC Replacement Lithium Battery 3.7V, 2000mAh for Hub 2Plus

Keep your Ajax Hub 2Plus security system fully operational with this OEM-quality replacement lithium battery from AJAX. Engineered to restore reliable backup power, this 3.7V, 2000mAh cell (manufacturer part 27858.87.NC) ensures your smart-home security, surveillance and monitoring devices remain active during outages or maintenance. The compact 9.5 x 35 x 80 mm package fits the Hub 2Plus housing for a straightforward swap that minimizes downtime and preserves alarm connectivity. Designed to meet the rigors of professional security setups, the battery delivers stable voltage under load so sensors, cameras and communication modules continue to perform when you need them most. Installing this replacement battery helps extend the service life of your hub and reduces false alerts caused by low power. Keep backup power on hand for critical sites — from small businesses to residential systems — where uninterrupted monitoring is essential. Order this AJAX replacement battery to maintain continuous protection and ensure your security network stays online.

• Restores uninterrupted protection: quickly replaces the Hub 2Plus battery to maintain continuous security and monitoring
• OEM-fit reliability: designed for seamless compatibility with Ajax Hub 2Plus for stable alarm and communication performance
• Long-lasting power: 3.7V lithium cell with 2000mAh capacity provides dependable backup runtime for surveillance and smart-home devices
• Compact, space-saving design: slim 9.5 x 35 x 80 mm form factor fits the hub without modification for fast, tool-free replacement
• Safe and stable operation: lithium chemistry engineered for consistent voltage under load, supporting dependable sensor and alarm responsiveness