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Ion Pro RT
Ion 200 RT
Flare RT

www.trekbikes.com

PN 572345-2

About this manual

This manual is for Bontrager lights Ion Pro RT,  
Ion 200 RT (headlights) and Flare RT (tail light).
RT indicates light is rechargeable and remote 
controllable when paired with Bontrager Transmitr 
remote, 

PN 502865

, or another ANT+ compatible 

device. 

Please read all Warnings in this manual before 
using these lights.

Specifications

•   Ion Pro RT: 4900mAh, 3.63V, 17.787Wh  

lithium-ion battery

•   Ion 200RT and Flare RT: 420mAh, 3.7 Vdc,  

1.6 Wh lithium polymer battery

•   Battery charging and operating temperature:  

32˚F to 113˚F (0˚C to 45˚C). Reduced 
performance when operating below freezing.

For more information

If you need help not offered by this manual, talk to 
your Bontrager retailer or visit trekbikes.com.

Do not use if the battery is impacted. Also do 
not puncture, crush, deform, disassemble, or 
heat a lithium-ion battery above the permitted 
temperature. Inflicted damage to the battery 
may result in a fire, explosion, or coming in 
contact with specks of lithium or lithium dust.

WARNING

List of parts 

You may have purchased one or more of the following lights. 

Ion Pro RT

Ion 200 RT

Flare RT

Light

Mount

25.4 - 35.0mm Adjustable Bar Mount 
with shim 

PN W552375

Front of bike

Quick Connect 0˚ Mounting Bracket

  

PN W527649 

*Fits 22.2mm to 35mm bars.

Quick Connect 16˚ Bracket

 for tail light  

PN W533846 

Mounts to the seatpost or a rack. 

Charging Cable

Fast Charge Micro USB Cable

  

PN W559136, 

(4-wire)

Charger Cable

 

PN W327765, 

(2-wire)

Charger Cable

 

PN W327765, 

(2-wire)

Accessories

(purchase  
separately)

Head Lights

Tail Lights

Helmets 

(Blendr mount system)

*Circuit

 Model 21764

Rally

 

Model 21797

22.2-31.8mm Adjustable  
Bar Mount

PN W530421

Rack attachment 

Use an 8mm M5 bolt and  
washer, 

PN 537061

 with Quick  

Connect 16˚ bracket supplied, 
or with complete rack mount 
kit, 

PN 552376

Bontrager  
Helmet Bracket

PN 428462

22.2-35.0mm Adjustable  
Sync Bracket

Model 418921

Seat Pack Clips

Metal, 

PN 424905

 

Plastic, 

PN W528503

Transmitr Remote

Model 502865

*Compatible with all  
Bontrager RT lights.

Bontrager Garmin Edge  
1030 GPS Computer

Model 21831

Speed Concept Attachment

Take off the reflector mounting bracket,  

PN W327560

 and replace the end with the Flare 

Round Mounting Kit interface, 

PN 418932

*

22.2
25.4
31.8
35.0

1

3

2

Basic operation 

(see Table 1)

To turn on, double click (Ion Pro RT) (similar to a computer mouse) and single click (Ion 200 RT / Flare RT) the power button.  
To turn off, press and hold the power button. To change mode, quick-press the power button. 

NOTE:

 When turned on Ion Pro RT, Ion 200 RT and the Flare RT will return to the last active mode.

Battery charging and care 

(see Table 2)

Although the light is charged at the factory, it is recommended to charge it 
before first use.

To charge the battery 

IMPORTANT:

 For best results, charge at room temperature in a dry place. Use 

a quality CE or UL approved USB charger rated for 500 mA or greater. Avoid 
extreme conditions including wet, cold, or extremely hot. 

1.  Open the USB port cover.
2.  Plug the Micro charger cable into the 
USB port on the light.
3.  Plug the cable into a computer or  
wall adapter.
4.  When the charge is complete, unplug 
the Micro charger cable and close the USB 
port cover.

IMPORTANT:

 Ensure the USB cover 

is latched before riding in rain or in wet 
conditions. If the USB cover is not closed, 
damage to the light may occur.

Table 2. Battery charging and care

Model

Power Button/

Status LED  

Color

Charge, %

Charge 

Duration 

(hours)

Ion Pro RT

Red Flash

1

<25%

Yellow Flash

1

25% - 75%

7

3

Green Flash

1

75% - 99%

15

Green Steady

2

 

100% 

Ion 200 RT

Red Flash

0% - 75%

2

Green Flash

75% - 99%

Green Steady

2

 

99% - 100%

Flare RT

Red Flash

0% - 75%

2

Green Flash

75% - 99%

Green Steady

2

 

99% - 100%

1

Flashes fast (2 Hz) with 4 wire USB cable and a 500mA charger, or slow  

(1 Hz) with 2 wire USB cable

2

When fully charged, status led remains steady for 1 minute then turns off 

3

Requires a 4 wire USB cable, supplied, and a 500mA charger

 

 

Ion Pro RT

Ion 200 RT 

or 

Flare RT

OR

OR

The lights may be hot and could cause a burn or damage material it may 
contact. Do not activate (turn on) light in enclosed area. Avoid accidental 
wireless activation.

WARNING

 

Caring for the battery

Store the light at room temperature in a dry place. Avoid moisture, or extreme 
hot or cold. 
Store the light in the charged condition. Avoid ‘deep discharge’. Battery life will 
decrease if the battery is stored in a fully discharged condition. 
Over time, the run time of the battery will diminish. Expect about 500 full 
charges, depending on care. After a full life, the battery will continue to charge 
but with a lower run time. When the run time is unsatisfactory, do not open the 
case of the light or incinerate; please recycle. 

Traveling with the battery 

Li-ion batteries cannot be shipped by air due to airline regulations. When 
traveling by air, place the light in your carry-on.

Recycling

Please recycle the battery. In the US, you can find out  
where to do this at www.call2recycle.org
This symbol on the product(s) and / or accompanying 
documents means that used electrical and electronic 
products should not be mixed with general household 
waste. For proper treatment, recovery and recycling, outside 
the US, please take this product(s) to designated collection 
points. Alternatively, in some countries you may be able to 
return your products to your local retailer upon purchase of 
an equivalent new product. Disposing of this product correctly will help save 
valuable resources and prevent any potential negative effects on human health 
and the environment, which could otherwise arise from inappropriate waste 
handling. Please contact your local authority for further details of your nearest 
designated collection point. Penalties may be applicable for incorrect disposal 
of this waste, in accordance with your national legislation.

Ion Pro RT information, installation,  

and special features 

Installation

 

1.  Loosen knob and open.
2.  Adjust for bar size (31.8mm or 35mm).
3.  Close and tighten knob. 
4.  Slide light onto mount until it locks in place.

NOTE:

 Use provided shim to fit 25.4 bars.

Removal

5.  Press down.
6.  Slide light to remove.

Low battery feature 

When the battery charge drops below 5% the 
light automatically adjusts the output brightness 
to 50 lumens. This extends the light output for an 
additional 30 minutes. 

Locking/Unlocking the mode

Turn on and select the desired mode, then press 
and hold the power button 8 seconds to select it. 
The light will turn off and the main LED will flash once. To unlock, repeat the 
process.

Reset

 

To reset the light to factory default settings, with the light on, press and hold the 
power button for 15 seconds. The main LED will flash once at 8 seconds, and 
again at 15 seconds. Release the button after the second flash.

Wireless Communication

 

The light is shipped with ANT+ and Bluetooth wireless connectivity enabled.  
To disable, with the light off, press and hold the power button for 15 seconds. 
The main LED will flash once at 8 seconds, and again at 15 seconds. Release 
the button after the second flash.

NOTE:

 The status LED turns on blue for 3 seconds IF the wireless is enabled. 

After 3 seconds, the status LED continues to display the battery level. If the 
wireless is disabled, the status LED immediately displays the battery level.

31.8mm

35mm

1.

2.

3.

4.

5.

6.

Table 1. Modes, runtimes, and battery life

Model

Power Button/Status LED

Mode

Max Output  

(lumens)

Runtime  

(hours)

2

Power Button/

Status LED Color

Battery Life, %

Ion Pro RT

Power / Status LED Button

High

1300

1.5

Green Steady

25 to 100%

Medium

800

3

Low

400

6

Red Steady

5 to 25%

Night Flash

200

26

Red Flashing

Less than 5%

Day Flash

300

22

Ion 200 RT

Power Button

Status LED

High

200

1.5

Green Steady

25 to 100%

Medium

100

3

Low

5

14.5

Red Steady

5 to 25%

Night Flash

5

30

Red Flashing

Less than 5%

Day Flash

1

100

12

Flare RT

Power Button

Status LED

Day Flash

1

90

6

Green Steady

25 to 100%

All Day Flash

1

45

12

Night Flash

5

15

Red Steady

5 to 25%

Day Steady

1

25

4.5

Red Flashing

Less than 5%

Night Steady

5

13.5

1

Supports auto brightness.   

2

Not including 30 minute low battery feature

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Summary of Contents for Flare RT

Page 1: ...Ion Pro RT Ion 200 RT Flare RT www trekbikes com PN 572345 2...

Page 2: ...ery Ion 200RT and Flare RT 420mAh 3 7 Vdc 1 6 Wh lithium polymer battery Battery charging and operating temperature 32 F to 113 F 0 C to 45 C Reduced performance when operating below freezing For more...

Page 3: ...on Status LED Color Battery Life Ion Pro RT Power Status LED Button High 1300 1 5 Green Steady 25 to 100 Medium 800 3 Low 400 6 Red Steady 5 to 25 Night Flash 200 26 Red Flashing Less than 5 Day Flash...

Page 4: ...ose the USB port cover IMPORTANT Ensure the USB cover is latched before riding in rain or in wet conditions If the USB cover is not closed damage to the light may occur Table 2 Battery charging and ca...

Page 5: ...Lights Tail Lights Helmets Blendr mount system Circuit Model 21764 Rally Model 21797 22 2 31 8mm Adjustable Bar Mount PN W530421 Rack attachment Use an 8mm M5 bolt and washer PN 537061 with Quick Conn...

Page 6: ...ons When traveling by air place the light in your carry on Recycling Please recycle the battery In the US you can find out where to do this at www call2recycle org This symbol on the product s and or...

Page 7: ...and the main LED will flash once To unlock repeat the process Reset To reset the light to factory default settings with the light on press and hold the power button for 15 seconds The main LED will fl...

Page 8: ...step do not press the power button on the light again until pairing is complete 3 Press and hold the center button on the Transmitr Remote for at least 8 seconds When the corner buttons flash release...

Page 9: ...the light OFF Press and hold the same button To change modes of an individual light Each quick press of a button that controls a light will cycle through the modes To see battery power status on the...

Page 10: ...ill flash once To unlock repeat the process Auto brightness The light is shipped with an ambient light sensor disabled When the ambient light sensor is enabled the light automatically changes modes wi...

Page 11: ...manually accessible Reset To reset the light to factory default settings with the light on press and hold the power button for 15 seconds The main LED will flash once at 8 seconds and again at 15 seco...

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