LCD display charging indicator, when the charger is powered, battery in socket, screen lights on. 2. This product is a patented product, exclusive production. 3. Adopt microcomputer digital chip intelligent charging, overcurrent protection, overcharge protection, protection against short circuits. 4. DC charger, compared to the existing digital charger in the marketing, more security. 5. Can be used with mobile phone USB charging head, USB car charger, computer USB hole, mobile power, charging is not limited to the interior, also for travel charger. 6. Note: The showing batteries are not included.