123 Battery Vs CR2: What’s The Key Difference?
CR2 and CR123A (commonly called “123 Battery”) are both 3V lithium manganese dioxide primary cells, but they differ in physical dimensions and capacity. CR2 (15.6mm diameter × 27mm height) is smaller, fitting compact devices like laser pointers, while CR123A (17mm × 34.5mm) offers higher energy density for power-intensive applications like professional cameras. Their non-interchangeable sizes … Read more