Purpose-built for motorcycles, OptiMate USB chargers are 100% true power rated, and deliver a continuous 2.1A – plenty for power hungry devices such as tablets and phones. They also come with a built-in Apple ‘handshake’, to guarantee iPhones and iPads charge at the appropriate maximum.

With devices like smartphones, tablets and sat-navs increasing in popularity among motorcyclists, on-bike USB charging is fast becoming an essential add-on.

Finding a suitable USB charging solution that can stand up to the rigours of the riding environment, and also deliver the correct amount of charge for the chosen device, isn’t straightforward. Many over-the-counter cables and ports fall short.

Most smartphones and tablets need to ‘qualify’ the USB charger before they will accept a charge; they check the voltage (5 Volts is the USB standard) and then verify the maximum current the USB charger can deliver. If the device receives the wrong signal, it can limit the charge current, or fail to charge altogether.

All OptiMate USB chargers also have built-protection for the motorcycle battery, to prevent it being drained: the Vehicle Battery Protection system will automatically stop charging any device if the bike’s battery voltage drops to 12.5V.

Like OptiMate’s entire range of connectors and cables, weatherproofing comes as standard, to help prevent moisture causing problems and damage to circuits, and guarding against any issues they may cause with the bike’s own electrical system.

The range includes the O-103 (£19.00 including VAT) – the ideal companion for tankbags fitted with the OptiMate O-30 tankbag power entry; the O-104 that comes with a moulded BIKE (DIN) ‘Hella’ plug that fits all BMW, Triumph and Victory OEM sockets (£39.99); and the O-110 USB splitter, which allows a rider to simultaneously charge two devices (from £11.99).

For details of the complete range of OptiMate USB connectors, leads and accessories – as well as their battery optimisers – visit www.optimate1.com