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2.2
BATTERY OPERATION
The device includes a rechargeable 3.6Volts - 3xAAA NiMH battery back. The
current capacity of the battery pack is 600mA. The battery can be recharged from
the USB-C socket. A battery management controller inside the device ensures that
the device is properly charged following the NiMH battery charging characteristics.
When the battery is fully charged, the controller cuts the charging current. Battery
levels are shown on the OLED display.
Typically, NiMH batteries can be recharged hundreds of times However, battery
life is limited to up to 5 years. After that, it can be easily replaced with a new
rechargeable battery pack. In order to do that, remove the two screws from the
back of the device and lift the bottom enclosure plate. Locate the battery and
disconnect the two wires. Remove and replace the battery pack. Pay attention to
the battery + and – cable. (black is - , red is +). There is a printed indication close
to the device socket showing how to attach the cables with the correct polarity.
Please note that the device has reverse polarity protection so if you accidentally
reverse the battery polarity, the device will just not start. (It will not get harmed).
BATTERY CHARGING
2.3
When USB-C cable is inserted to the device, the battery automatically enters into
a charging cycle. The internal NiMH change controller decides if battery requires
charging and starts the charge sequence. Also, it stops the sequence when battery
is fully charged.
During charging sequence, the battery pack produces some heat (a normal
condition during any battery charging). Despite the fact that all temperature
sensors are placed into a different compartment of the aluminium enclosure (to
Uranus Meteo Sensor
Page 7 of 38
Pegasus Astro - Uranus Meteo Sensor Manual
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