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Insert transponder into charger. When 

charging, both the green and red LED in-

dicators will be lit. The red LED indicator 

will turn off once the transponder is fully 

charged (~3-4 hours). Once removed from 

the charger, the transponder will remain 

powered on for ~7 days. The number of 

blinks indicates the approximate number of 

days of charge left. Once red LED on the 

transponder begins to blink, the transponder 

needs to be recharged.

The G3 Kart transponder can be mounted 

using a pouch or a bracket. MOUNT THE 

MOUNT THE 

TRANSPONDER VERTICALLY

TRANSPONDER VERTICALLY

 with the 

label readable and in an upright position. 

Mounting the transponder horizontally will 

result in poor performance. 

There should 

be NO metal or carbon fiber between the 

transponder and the track. The transponder 

must have a clear shot to the ground. 

Sig-

nals can go through plastic so it is possible 

to use a piece of plastic as a mounting plate.

Typical Storage Between Races:

When transponders are not in use, they 

should be placed into an unplugged charger 

to conserve battery charge. Storage outside 

of a charger is also possible, but the battery 

will continue to drain. 

Ideal charging conditions:

10~45°C

60±25%R.H.

Ideal storage conditions:

-20~25°C

60±25%R.H.

Long Term Storage:

Transponders should not be stored for long 

periods of time without charging. Otherwise, 

the battery will completely discharge and be-

come unusable. Charge transponders every 

2 to 3 months.  

Dirt, water, fuel, oil and other compounds 

left on the charging contacts and screws 

will increase the chances for corrosion. We 

recommend cleaning your transponder after 

each use. Transponder surfaces may be 

cleaned with 70% Isopropyl alcohol. Care 

must be taken if stronger cleaning products 

are used. The charging contacts on the G3 

Kart rechargeable transponder are stainless 

steel with nickel plating. Compounds which 

have adverse reactions with these materials 

must be avoided.

It is recommended the charging contacts on 

both the G3 Kart rechargeable transponder 

and charger be cleaned periodically to main-

tain a good charging surface. Oil and dirt 

contamination will hinder good contact and 

charging may not occur.

CHARGING

CLEANING

STORAGE

MOUNTING

NOTE: BE SURE TO SECURELY FASTEN THE TRANSPONDER TO THE VEHICLE BEFORE USE.  

UNSECURED TRANSPONDERS CAN BE HAZARDOUS IF THEY FALL ON THE TRACK. 

Window too narrow 

for detection.

Wide window for 

detection.

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