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LEGO MindStorms NXT User Manual

LEGO MindStorms NXT
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7
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Rechargeable battery
The rechargeable battery fi ts into the bottom of the
NXT. To install the rechargeable battery, move the
plastic tab on the side with your thumb to open the
back.
The NXT comes with an extra cover that is used when
6 AA batteries are used. (See details on the next
page.)
Holding the rechargeable battery, press in the plastic
tab and snap the battery into place.
Installing Batteries In The NXT
To recharge the battery, attach one end of the power adapter
cord (sold separately) into the charge plug just below the NXT
input ports. Attach the other end of the power adapter cord
into the wall socket. The battery may also be charged when
not inserted into the NXT.
The green indicator light turns on when the power adapter
is connected to the NXT.
The red light turns on when the battery is recharging. The
red light turns off when the battery is fully recharged.
Fully recharging the battery requires approximately four
hours.
The NXT can be used when the battery is recharging;
however, recharging then requires more time.
This Li-Ion Polymer battery can be recharged up to 500
times.
When you fi rst use the rechargeable battery in the NXT itself,
attach the transformer and let the battery and NXT charge
together for approximately 20 minutes before starting. You
may also need to do this if the rechargeable battery was
completely depleted before recharging.
Note: You will need to charge the battery fi rst before
using it.
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LEGO MindStorms NXT Specifications

General IconGeneral
Processor32-bit ARM7 microcontroller
Clock Speed48 MHz
Memory256 KB Flash, 64 KB RAM
Display100x64 pixel LCD
Power6 AA batteries or rechargeable battery pack
SensorsTouch, Light, Sound, Ultrasonic
Motors3 Interactive Servo Motors
ConnectivityBluetooth, USB
ProgrammingNXT-G
Input Ports4 sensor ports
Output Ports3 motor ports

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