OptiMate USB charger. Powerful, safe USB charger to charge USB compatible devices - e.g. mobile phones, navigation devices, MP3 players, intercoms, iPhone, iPad, digital cameras and many others. Use devices while using your car or bike, or recharge while stationary. The O100 will turn off if the battery is low, preventing accidental battery discharge.
Vehicle battery protection: USB output turns off 1 hour after engine stopped or immediately if the battery voltage reduces below 12.4V
3 LED battery monitor (when USB output off) – battery status is displayed every 5 seconds