OptiMate TecMate USB O-100, Combination 2400mA Charger and 3-LED Battery Monitor, with Vehicle Protection

Connects to the battery cable with the industry standard 2-pin SAE connector - seals perfectly when connected to OptiMate SAE! Charges 1x USB device with up to 2400mA current (or optionally charge 2 devices with O-110 USB splitter). The charging current adapts to the connected device for safe charging. Ensures weather-resistant seal on the inserted USB cable or "drive-ready" seal with cap when not in use - easy charging of phone, camera or GPS in any weather The built-in protection interrupts the USB charging process and prevents the battery of your parked vehicle from emptying - starts again as soon as the vehicle engine starts. Monitors and displays the battery status of the parked vehicle - indicates by flashing an LED that the battery is "ready to start"