Specifications

Charge2 and Charge4 share a common set of features, the difference between them is the number of USB ports available, being 2 and 4 ports respectively.  The power supplies are complete units, supplied with a choice of power lead.

Each port is independent, so the type of charger being emulated, fault detection and isolation, is all on a per port basis.  So an issue on one port will not impact the performance of another port.

Safety/Protection features;

  • Very Low RF signature, both the radiated and conducted emissions of the units is very low, preventing radio / intercom / avionics interference.  Some example comparative measurements of emissions are given in the Questions and Answers pages.
  • Reverse power input protection
  • Over and under voltage protection, including spikes & transients
  • Independent per USB port detection and isolation of any short circuit/fault, with auto recovery once the fault is removed (i.e. damaged cable/faulty device).
  • Thermal overload shutdown
  • Active monitoring of ports for faults and power management
  • No exposed electronics

USB Charging features;

  • Universal device support, the optimal USB charger profile is selected for the device attached.  No need to resort to cheater cables/dongles or other tricks to get your device to be correctly supported
  • Flexible capacity USB ports, up to 12W (2.4A) per port 
  • Total power available is 5A total for Charge2 and 8.5A for a Charge4
  • USB Type A ports, which support USB version 1, 2, and 3 devices
  • USB Battery Charging specification 1.2 (BC 1.2) compliant
  • Chinese telecommunications standard YD/T 1591-2009 compliant
  • Voltage regulation is maintained within the defined standards, with no voltage drop when high power devices are connected, preventing damage to their internal charge controllers.  Typically output is ~5.25v regardless of load, to help cater for loss in the USB cable.
  • Software controlled manufacturer specific charger emulation means new devices/charging requirements can be accommodated via entering a profile code via the diagnostics port and assigning it to a port
  • Per port status lights informing you if a device is charging, pending, or of a fault on the port
  • Each port is independent, so they are device agnostic and all faults are kept isolated

General features;

  • Designed with aviation in mind, using the ETSO-C71 technical specification 
  • Operate on both 12v, 24v/28v systems (any DC voltage between 11v - 30v is OK)
  • Low standby power consumption of 40mA
  • Charge4 dimensions: 81 mm wide x 30 mm tall x 123 mm deep and weighs just 220 grams (7.7 oz)
  • Charge2 dimensions: 55 mm wide x 23 mm tall x 80 mm deep, weight just 96 grams (3.3 oz)
  • Charge2 Panel Mount variant has a wider front bezel (74mm wide) and is secured by 4 of 4mm screws/bolts (not supplied).  Dimensions for the Charge2 panel cutout and mounting are shown here (opens in a new window).  It will fit inside a standard 80mm instrument cutout.
  • Charge2 Aircraft mounts for  2 1/4” (57mm) circular instrument holes are also available.
  • Extruded aluminium case, so no exposed electronics 
  • A diagnostic port on the rear offers realtime port status, including output of power being drawn per port.  Various settings and information is also available via the menus.


Included with each unit is a choice of one of the following connection options, details of these can be found here (opens in a new window)

  1. a cigarette / DIN plug lead suitable for standard 21mm automotive sockets or the smaller DIN EN ISO 4165 sized sockets, twistable from straight to right angle connector as needed
  2. ETFE aircraft grade cable tail for installation
  3. bare connectors for self installation of cable loom

Standards compliance;

EU Electromagnetic Compatibility Directive 2004/108/EC
EU RoHS 2 Directive 2011/65/EU