4.8v 2500mAh Ni-CD Battery Pack Replacement for Exit Sign Emergency Li – Batteryhawk, LLC
ESP-7-56-748P - 4.8v 2500mah Industrial Nickel Hydride battery with connector.
Amazon.com: 4.8V 2500mAh NiMH Battery Pack with Tabs for FRS Radios, Exit Lights, Tools : Health & Household
Amazon.com: Joiry 4.8V 2500mAh Replacement Battery Compatible with Dremel 755-01 7300 7300-N/8 MiniMite 7300-PT Pet Nail Grinder Tool, Not for 755 : Tools & Home Improvement