Welch Allyn 3.5V Rechargeable NICAD Battery Handle and Charger • Rechargeable, nickel-cadmium battery included • Smooth, non-abrasive knurled finish ensures a non-slip grip • Chrome-plated brass construction for durability and reliable long life • Recharges in the Welch Allyn desk charger and numerous stand console and well chargers • Charging hole in the base (WE71670) • When using a desk charging pod the handles can be continually charged, so they are always ready for use • Push and twist lock connectors for fitting of heads • 60 minutes of continuous use before charging is required.