Replacement battery fits 5 TransLite compatible models. Specifications: 1500mAh, 3.7V, Li-Polymer. Compatible with: EMS PRO IV LED Vein Finder, LED, LED Plus, Vein Finder Transilluminator, Veinlite LEDX. Replaces: TransLite VLED-BAT. TransLite replacement battery designed for Medical devices. Designed to match the original manufacturer’s performance.