Box of 10 Varta CR2025 Car Alarm Key Fob Batteries. These 3V lithium Varta CR2025 original equipment replacement car alarm batteries are the highest quality you can buy. Now available online from Granada Batteries, the Approved Varta UK Wholesale Distributors of car key batteries for over 20 years. These 3 Volt Varta CR2025 car alarm key fob batteries are 20mm diameter and 2.5mm height or thick. Varta CR2025 car alarm key fob batteries replace all other CR2025 batteries including DL2025, EL2025, CR2025V, 6025101401, 6025, 2025. Varta CR2025 car alarm batteries also have an extremely long shelf life.