Into Gear's premium range of motorcycle battery maintaining and charging units come from the best in the business, Optimate. 
Fast charge 2 of your mobile devices at the same time. Charge a combination of your phone, GPS, camera & tablet from the power socket on your BMW, Triumph, Ducati etc.
AND - It won't flatten your battery
Vehicle battery protection: AUTO off 1 hours after engine stopped or if battery voltage drops below 12.4VTurns on if vehicle battery voltage increases above 13.3V.Short circuit, overheat, over-voltage protection.