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11 CHARGING
11.1 Charging Voltage and Details
The PIU has the capability to be charged via its charging socket or via its USB connector. The unit
is supplied with a standard mains charger that provides 12 Volts D.C. via a standard 2.1 mm
centre positive charging socket. The PIU is protected against wrong polarity.
Figure 19 - Charging via the USB
The PIU is fitted with a Micro USB connector that in addition to providing communications to a
USB Host, can also be used to charge the unit. The charging circuits inside the PIU are intelligent
and will recognise the type of charger connected and charge at the appropriate charging current.
This minimises the charging time for the PIU when being charged via USB. The PIU can charge at
a maximum rate of 2.4A, which should achieve full charge in about 2 hours.
USB Socket
2.1 mm Charging Socket
Green LED Charging Indicator