HKSUNKIN Rapid Battery Charger Base for MOTOROLA XTS3000 XTS3500 XTS4250 XTS5000 TETRA MTP200 MTP300 Radio Rapid charges battery while on or off the radio Ultra-compact, durable design Includes external AC to DC power supply (100V - 240V) Good quality, heavy duty, special circuits for rapid charge, Smart charging technology prevents over-charging.