Fast Portable Charging:  NITECORE's V2 In-car Speedy Battery Charger provides users with a powerful and portable charging solution for daily use and traveling. This two-channel battery charger provides a rapid combined charging current rate up to 6A (3A per slot), allowing users the ability quickly recharge batteries on the go. A built-in micro processor automatically detects battery types and battery levels, then selects the appropriate charging mode to quickly recharge batteries while preventing battery damage at the same time.