Charging the battery pack – Traxxas 72074-1 User Manual
Page 11
 
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2-5
TRAXXAS TQ 2.4GHz RADIO & VELINEON POWER SYSTEM
INSTALLING TRANSMITTER BATTERIES
Your TQ 2.4GHz transmitter uses 4 AA batteries. The battery 
compartment is located in the base of the transmitter.
1. Remove the battery compartment door by pressing the tab
and sliding the door open.
2. Install the batteries in the correct orientation as indicated in
the battery compartment.
3. Reinstall the battery compartment door
and snap it closed.
4. Turn on the transmitter and check the
status LED for a solid green light.
If the status LED flashes red, the transmitter batteries may be 
weak, discharged, or possibly installed incorrectly. Replace 
with new or freshly charged batteries. The status LED does not 
indicate the charge level of the battery pack installed in the 
model. Refer to the Troubleshooting section on page 15 for 
more information on the transmitter status LED codes.
CHARGE PROGRESS
x1
1 green flash
0 - 25% charged
x2
2 green flashes
25% - 50% charged
x3
3 green flashes
50% - 75% charged
x4
4 green flashes
75% or more charged
Solid green LED
100% charged
CHARGER LED INDICATION
MEANING
Solid Red LED
Ready for Charging
Slowly Flashing Green LED
Charging (see Charge Progress chart)
Solid Green LED
Battery Fully Charged
Flashing Red LED
Charger error
Disconnected
Connected
Charged
1
2
3
CHARGING THE BATTERY PACK
The Traxxas Battery Charger is a 
fully featured NiMH (Nickle Metal 
Hydride) charger. It features 2-amp 
charge current for fast charging 
and advanced peak detection to 
optimize every charge. Take this 
compact charger with you wherever 
you want to have radio controlled 
fun! Do not charge batteries inside 
of an automobile. Read the Safety
Precautions section of this manual.
1. Plug the charger into a 12-volt 
automotive auxiliary power 
socket.  The charger is compatible 
with 12-volt automotive auxiliary 
power sockets only. The LED 
on the charger will glow red to 
indicate it is ready to charge a 
battery.
2. Connect the battery to begin
charging. Plug the battery into the charger. The charger’s LED will 
flash green, indicating that charging has begun. The flashing green 
LED on the charger indicates the charge progress. 
3. Disconnect the battery when charging is complete. The Traxxas
2-amp DC charger uses sophisticated voltage-detection circuitry to 
monitor the battery and automatically stop charging when the pack 
has reached maximum 
capacity. When the 
battery is fully charged, 
the LED will light solid 
green. The battery will 
be warm in your hand. 
Disconnect the battery.
Use the Right Batteries
Your transmitter uses AA 
batteries. Use new alkaline 
batteries or rechargeable 
batteries, such as NiMH (nickel-
metal hydride) batteries, in 
your transmitter. Make sure 
rechargeable batteries are 
fully charged according to the 
manufacturer’s instructions.
If you use rechargeable 
batteries in your transmitter, 
be aware that when they begin 
to lose their charge, they lose 
power more quickly than 
regular alkaline batteries. 
Caution: Discontinue running 
your model at the first sign of 
weak batteries (flashing red 
light) to avoid losing control.
The included charger is 
designed for use only with 
Traxxas NiMH batteries with iD. 
Legacy Traxxas High-Current 
Connectors are not compatible 
with this charger. DO NOT try to 
force legacy connectors into the 
charge connector.
If the status LED doesn’t light 
green on the transmitter, check 
the polarity of the batteries. 
Check rechargeable batteries 
for a full charge. If you see any 
other flashing signal from the 
LED, refer to the chart on page 
15 to identify the code.