1. Leak-Resistant Technology for Device Safety Engineered with enhanced seals to minimize leakage risks, protecting your garage door openers, car remotes, and electronics from corrosion damage. 2.Wide Applications: 27a 12v Alkaline Battery Provides High Quality Performance in Various Electronic Devices. Works for Garage Door Openers, Garage Door Remotes, Radio Remotes, Car Alarms Remote Controls, Toys, Calculators, Organizers, Computer Equipment CMOS, and all other devices that requires this battery size. 3.What You Get:10 Pack high-quality 27A 12V alkaline batteries, . Grade A cells 27A Ensure Longer Battery Life and Long Lasting Power. 4.High Quality: Tested under Strict Quality Control Standards. CE and ROHS Certified. Grade A cells 27A Ensure Longer Battery Life and Long Lasting Power. 5.If your Device Uses any of the Following Batteries, This is What You are Looking for : GP23AE , 21/23 , A23S, 23A , 23AE , V23GA , MN21B2PK , A23bpz , MN21 , GP23A ,LRV08 , L1028 , RVO8 , MS21 , E23A , K23A , 8LR932 , 8LR23 , VR22 , 8F10R , EL12 , 23GA. Ensure reliable power for your remote controls, key fobs, and other small electronics with this 10-pack of 27A 12V alkaline batteries. These MN27 CR22 A27 batteries provide long-lasting performance and consistent voltage delivery. Ideal for use in garage door openers, remotes, security devices, and more, these 12-volt batteries offer convenient and cost-effective operation. Keep a supply on hand for seamless device functionality.