Combination 2400mA USB charger and 3-LED battery monitor, with vehicle battery protection.

• Vehicle battery protection: USB output turns off 3 hours after engine stopped or when vehicle battery charge level is less than 50%
• 3 LED battery monitor (when USB output off): battery status is displayed every 5 seconds
• 12V input through an industry standard SAE 2-pin connector
• 5V 2400mA true output
• Unique seal and cap design for USB socket ; use any USB cable, seals when inserted
• Short circuit, overheat, over-voltage protection
• 3-year limited warranty