✅【Professional & Reliable】: NASTIMA focuses on manufacturing batteries. The 27A 12V alkaline battery has been tested under strict quality control standards. CE and ROHS certification. These 27A 12 volt Class A alkaline batteries ensure longer battery life and extended usage time. | ✅【Security and Hermetically Sealed Case】: The hermetically sealed case is essential for the durability and safety of the devices. Fresh 27a 12v batteries have a shelf life of approximately 3 years. Our fresh 5pcs A27 (MN27 V27A WE27A L828) alkaline batteries are packed separately and leakproof, which ensures easy and safe storage. | ✅【Durable and Cost-Saving】: NASTIMA battery a27 offer high-quality performance in a wide range of electronic devices. The durable and reliable specialty batteries are used in a variety of applications such as garage door openers, garage door remote controls, wireless remote controls, locking systems, cameras, meters and many other devices. | ✅【Names】: 5 pieces alkaline 27A / A27 / MN27 / 27 Alternative article names: A27, 27A, V27A, LR27A, WE27A, L828, MN27, 27A 12v, 12V 27A, UM27A, 27AE, K27A, 8LR732. | ✅【100% Satisfaction】: You will be 100% satisfied or we will give you 35 days money back, 1 year warranty. If you have any problem, please contact us via Amazon, 24 hours will help you solve the problem!