Alfatronix PVPro Standard USB Chargers


The widespread use of smartphones and computer tablets has created an increasing need for user accessible, on the move charging systems. The PowerVerter USB Chargers can be easily installed onto any vehicle and allow both drivers and passengers to readily access power to charge any device connected via a USB lead. This type of system has the distinct advantage of largely negating the need for mains electricity on vehicles. The 5Volt DC power is much safer than mains, so installation is quick and simple. Passengers can access the charging facility directly and power their equipment simply through the USB charging lead which is supplied with all such products. All versions in the range can be connected directly to both 12Vdc and 24Vdc systems without adjustment. The advanced electronic design will also automatically detect if the device is an Apple or Android configuration and alter the charging process accordingly. This ensures that whatever device is connected, be it Apple, Android, iPad, phone or tablet, it will always be charged as fully as time and capacity allow.


The PowerVerter USB range has been completely re-designed for 2016 to include a standard design that can be used in regular as well as slim-line installations. Aesthetically the design has been improved with a dark grey body and contrasting light grey ring as well as an attractive and more obvious LED indicator. This helps to draw attention to the unit and encourages use. Part numbers are: PVPro-S for a single output and PVPro-D for a double output. The front fitting system has also been improved with a round bezel with tamperproof covering ring to hide the screws, yet still allow the unit to be replaced quickly and easily should this be required. Part numbers are: PVPro-SFf (single output) and PVPro-DFf (double output).

Electronically, the design now includes automatic short circuit detection, so in the event of tampering or compromise, the unit will automatically shut down, then re-start again once the fault has been removed. A charger only version is also available for permanent, behind the scenes installations without customer interface. Part number is: PV-USB2. The range is completed with our ‘Pod’. This is ideal for retrofit installations and is designed to fit underneath the seat in front. This system can also be bought as a complete assembly including; PVPro USB charger, pod and 1.2m of fused cable. Please order part numbers; PVPro-S-Assy (single) and PVPro-D-Assy (double).


The PowerVerter USB chargers offer an advanced design that effectively counteracts the voltage drop common when output currents vary as different devices charge at different rates. This avoids the common problem of the phone or tablet indicating it is charging when in fact very little current is being supplied. They also have an exceptionally low quiescent current of less that 2mA meaning that multiple devices can safely be installed throughout buses and coaches without materially discharging the battery.

They have been designed to meet the rigorous standards required for on board commercial vehicle applications including BS EN50498 and ISO 7637- 2 and are both CE and E marked. The casings are made from V0 rated (self-extinguishing) high impact polycarbonate and the electronic assembly is predominantly by computer controlled SMT for maximum reliability.

All versions have a subtle blue LED light to highlight their location on the vehicle.



Like all products, the USB chargers are manufactured using rugged components to provide years of service in demanding commercial environments. Due to the limitations of public use, the guarantee on these products is limited to three years.

Download Full Application Leaflet


Installation Instructions


Choose your PowerVerter USB Product

Part Number Power Description Dimensions Weight
PVPro-S 2.1A Single output 12/24-5V USB Charger 2.1A Diameter 37x33; Hole 30; Depth 23 20g
PVPro-D 3A Double output 12/24-5V USB 3.0A (1.5A per socket) Diameter 37x33; Hole 30; Depth 23 24g
PVPro-SFf 2.1A Single output charge only 12/24-5V USB 2.1A Front fitting Front fitting Diameter 47x33; Hole 30; Depth 23 23g
PVPro-DFf 3.0A Double output 12/24-5V USB Charger Front fitting Diameter 47x33; Hole 30; Depth 23 27g
PV-USB2 2.1A Single output charger only 12/24-5V USB 115 x 24 x 15 17g
PV-USB-POD - Mounting pod for USB Chargers Width 60; Height 52; Depth 80 55g
PV USB-H1 - Standard 1.2m wiring with inline 2A fuse 1 x Red 1.2m, 1 x Black 1.2m 50g


Technical Data

Input voltage range 9-32Vdc
Output voltage 5Vdc/-0.2v
Output Power 2.1A (single) 3.0A (double) - max 1.5A per socket
Application Charges all USB devices including Apple and Android
Transient voltage protection Meets ISO7637-2 International standard for 24V vehicles
Output noise <50mV pk-pk
Off load current (quiescent current) <1.7mA
Power conversion efficiency 90%
Operating temperature -25°C to +30°C to meet this specification table
Storage temperature -25°C to +100°C
Operating humidity 95% max. non-condensing
Casework Black polycarbonate body
Connections  Input: 6.3mm push-in flat blade connectors
Output: USB type A single socket
Output indicator Blue LED output indication
Mounting method 30mm diameter hole with or without bezel. USB2 for non through fitting applications.
Safe area protection:
Over current
Over heat
Overvoltage and Undervoltage
Reverse Polarity
Catastrophic protection

Limited by current sensing circuit
Limited by temperature sensing circuit
Limited by sensing circuit
Limited by sensing circuit
Protected by filters and rugged component selection
Internal fuse
Approvals 2014/30/EU The general EMC directive
Regulation 10 The automotive directive
93/68/EEC The CE marking directive
Designed to

EN50498, EN61373 (pending) and ISO 7637-2
To fully meet railway approval to EN50155 & EN50121-3-2 PVPro is to be used in conjunction with a PV12i-R

Markings CE and E marked
IP Ratings: IP30

Alfatronix (Ireland)


Phone: +353 (0)404 62399

C26 Wicklow Enterprise Centre
The Murrough
Wicklow Town
Co. Wicklow