7
1 2
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. 
Technology