Transform your power supply needs with this versatile 2-pack of 3 AA battery holders from RyanDesign. Each compact holder measures 2.25 x 2.52 x 0.71 inches and weighs just 1 ounce, featuring a built-in USB cable and convenient on/off switch. The holders deliver a stable 4.5-5V output, perfect for powering LED strips, toys, motors, and other compatible devices. The durable case construction includes a protective cover to keep batteries secure and clean, while the spring-loaded contacts make battery installation and replacement quick and simple. No soldering required - just insert three AA batteries (not included) and connect via USB for instant power. The practical design incorporates a power switch to prevent battery drain when not in use. With two holders included, you'll always have a backup power solution ready. These battery holders combine convenience, reliability, and versatility in a compact form factor that's ideal for various 4.5-5V applications.