Nordic ID Group
| Joensuunkatu 7 | FI-24100 Salo |Finland
358 2 727 7700 | Fax + 358 2 727 7720 | [email protected]
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2017-09-22
Nordic ID EXA51 and Nordic ID EXA51e
User Guide
Version 1.7
NOTE!
The cradle is sold separately by Nordic ID. The USB charger is not
included in the Nordic ID EXA51 inbox and is not sold by Nordic ID.
Picture 5 Charging of the Nordic ID EXA51 via USB charger
HOST DEVICE CHARGING
Host device attached on the Nordic ID EXA51 can be charged via wireless charging or USB from the
cradle.
1.8.2.1.
WIRELESS CHARGING
Wireless charging is based on inductive charging technology and is compliant with Qi v1.2 specification.
With the inductive charging technology, the power is transmitted between a transmitter and receiver
coils placed closely together. The Nordic ID EXA51 acts as a transmitter and host device acts as a receiver.
The coils of the transmitter and receiver must be aligned well to make the connection. Charging efficiency
greatly depends on how well the coils are aligned. The wireless charging may not work or may work
unreliably if the coils are misaligned. Please see section 1.6 for information about the coil location of the
Nordic ID EXA51. When wireless charging is powered from the battery of the Nordic ID EXA51 then
wireless charging is disabled in following cases:
•
Battery level of the Nordic ID EXA51 is < 10%
•
The Nordic ID EXA51 goes to sleep mode
Please note that the Nordic ID EXA51 does not go into sleep mode and will keep wireless charging
enabled when charged via the cradle or USB charger. Maximum charging power via the wireless charging
when the Nordic ID EXA51 is charged is 5W. Maximum charging power via the wireless charging when
the Nordic ID EXA51 is not charged is 2.5W 5W (wireless charging power is delivered from the battery
of the Nordic ID EXA51).
