Lithonia Lighting Nickel Cadmium (Nicd) Emergency Lighting Battery Pack in the Emergency Lighting Battery Packs department at Lowes.com
OTYTY Emergency Lights for Home Power Failure, LED Emergency Lights with Battery Backup, 2 Adjustable Heads Lamp & 90-Minute Minimum Capacity, Ultra-Bright 200 Lumens, UL Certified, 2 Pack - Amazon.com
Amazon.com: AJC B&B BP4-6 6V 4.5Ah Emergency Light Battery - This is an Brand Replacement : Health & Household