VC2 is the premium USB charger after MC series and also the first charger in the market which can tell you the real power of your battery! Experience the high tech -Can tell the real capacity of your batteries -Creative LCD screen displays charging current, battery voltage and charging capacity -Intelligently identify input power and automatically adjust suitable charging current from 0.1A to 0.5A to protect your charging device -Three stages of charging (TC-CC-CV) can prolong the lifespan of your batteries -Soft start can avoid sudden high current to prolong battery lifespan Worry-free charging -Automatically stop charging when complete and restart charging function, so you can keep the batteries inside the charger overnight -5V USB voltage, within the safety voltage ensures your safety -Intelligently identify bad/ Ni-MH batteries by showing "Null", and identify short circuit and mis-insertion by showing "Err" -ABS durable fireproof shell with perfect heat dissipation and high temperature resistance -Without temperature rising or overheating EdisonBright EB-4U 4-port USB charging station: 4 Port 34W USB Charging hub for tablets, phones and other USB charging devices. ETL Certified product -manufactured with top quality components with multiple safety features. Tested and certified by ETL. Worldwide compatibility -AC Input 100-240V; 0.85A 50/60Hz (Optional plug plates exchangeable for international configurations) This bundle includes EdisonBright EB-4U 4-port USB charging station