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User  Manual

Features

· 

Utilizes a CREE XM-L U2 LED

· 

Maximum output of up to 900 lumens

· 

Integrated “Precision Digital Optics Technology” provides extreme 

reflector performance

· 

Boasts a peak beam intensity of 60,000cd and a throw distance of up to 

490 meters

· 

Innovative single button two-stage switch offers a user-friendly interface 

(patented)

· 

Eight rapidly switchable brightness modes to select from

· 

High efficiency circuit board provides up to 800 hours runtime

· 

Integrated power indicator light displays remaining battery power 

(patented)

· 

Power indicator’s secondary function displays battery voltage (accurate 

to 0.1V)

· 

Reverse polarity protection prevents damage due to incorrectly inserted 

batteries

· 

Stainless steel retaining ring protects the core components from 

damage

· 

Toughened ultra-clear mineral glass with anti-reflective coating

· 

Constructed from aero grade aluminum alloy

· 

Sturdy HAIII military grade hard-anodized

· 

Waterproof in accordance with IPX-8 (two meters submersible)

· 

Impact resistant to 1.5 meters

· 

Tail stand capability

Dimensions

Length: 183mm (7.17”)

Head diameter: 60 mm (2.36”)

Tube diameter: 41.8mm (1.65”)

Weight

302g (10.65oz)(without battery)

Battery installation

1. Insert batteries with the positive (+) and negative (-) ends 

corresponding to the diagram on the inside of the battery 

compartment. 

2. Tighten the tail cap by aligning the two gold pins on the inside of the 

tail cap with the corresponding holes on the flashlight body and rotate 

clockwise.

Thanks for purchasing NITECORE!

Output & Runtime

Power Tips

1. When the light is on, the power indicator will blink once every two 

seconds when power levels reach 50%.

2. When the light is on, the power indicator will blink consistently when 

power levels are low.

3. Each time batteries are inserted or the light is put into lockout mode, 

the power indicator light will blink in various patterns to indicate the 
battery voltage (accurate to ±0.1V). For example, when the battery 
voltage is at a maximum charge of 4.2V, the power indicator will blink 
4 times in quick succession, followed by a one second pause and two 
more blinks, indicating a total battery voltage of 4.2V.

Changing / Charging Batteries

When the power indicator blinks rapidly it means the batteries need to be 
replaced or recharged. Alternatively if the light becomes dim or 
unresponsive to adjustment this also indicates batteries need to be 
replaced or recharged.

Maintenance

Every 6 months, threads should be wiped with a clean cloth followed by 
a thin coating of silicon-based lubricant.

Warranty Service

All NITECORE® products are warranted for quality. DOA / defective 
products can be exchanged for replacement through a local 
distributor/dealer within the 14 days of purchase. After 14 days, all 
defective / malfunctioning NITECORE® products will be repaired free of 
charge for a period of 18 months from the date of purchase. After 18 
months, a limited warranty applies, covering the cost of labor and 
maintenance, but not the cost of accessories or replacement parts. The 
warranty is nullified in all of the following situations:
1. The product(s) is/are broken down, reconstructed and/or modified by 
unauthorized parties.
2. The product(s) is/are damaged through improper use.
3. The product(s) is/are damaged by leakage of batteries.
For the latest information on NITECORE® products and services, please 
contact your national NITECORE® distributor or send an email to 
[email protected]

®

ALL-ROUND Flashlight Expert

TURBO

HIGH

MID

LOW

LUMENS

590

LUMENS

900

LUMENS

180

LUMENS

50

2

h

14

h

3

h

45

min

LOWER

LUMENS

2

800

h

60

h

490m 

(Beam Distance)

60000cd 

(Peak Beam Intensity)

 IPX-8, 2m 

(Waterproof AND Submersible)

1.5m 

(Impact Resistant)

NITECORE (SYSMAX)

 is a member of PLA

TO, participating in and helping 

to develop the ANSI FL1 standard of measurement. Product testing data 

is in accordance with these internationally recognized scientific 

standards.

Tips

Inserting batteries in a dark environment: Two of the four battery slots in 
the EA8’s battery compartment feature grooves indicating that batteries 
should be inserted with the negative (-) ends facing forward, while the two 
slots with no grooves require the batteries to be inserted with the positive 
(+) ends facing forward. In this way, batteries can be inserted correctly 
through tactile feedback alone.
After loading the batteries, the power indicator light will blink to indicate 
the battery voltage. Please refer to the “Power Tips” section of this 
manual for details.

WARNING

1. Insert batteries using the image on the inside of the battery 

compartment as a reference.

2. Do not mix rechargeable and non-rechargeable batteries.

3. Do not mix batteries of different types/brands.

General Operation

The EA8 utilizes a 2-stage switch similar to a camera shutter button. The 
light’s numerous functions are selected according to the depth the switch 
is pressed. The EA8 has two modes: Daily mode and Search / Turbo 
mode. 

Operating In Daily Mode 

1. With the light turned off, press the switch partway down and release 

within a second to enter daily mode. 

2. Daily mode contains four brightness levels: ultra-low, low, medium, and 

high. Pressing the switch partway down in quick succession will cycle 
through these modes. Pressing the switch partway down and holding 
for more than one second when in daily mode will enter into turbo 
mode. See Turbo / Search mode instructions below.

3. The light is turned off (put into standby mode) by pressing the button 

all the way down and releasing within a second. This will also 
memorize the last daily mode used. 

4. Daily mode has a momentary function which allows the light to be 

turned on only when the switch is held. With the light turned off, press 
the switch partway down and hold to activate daily mode’s momentary 
function. The light will turn off the moment the switch is released.

Operating in Search / Turbo Mode

1. With the light turned off, press the switch all the way down and release 

within one second to enter turbo mode. To cycle between high and 
turbo modes press the button partway down while in turbo mode.

2. To turn the light off when in turbo mode, once again press the button all 

the way down and release within one second.

3. With the EA8 turned on in Search/Turbo mode, partway presses of the 

button will cycle between high and ultra-high mode. There is no 
memory function in Search/Turbo mode.

Standby Mode / Lockout and Unlock functions

With the light turned on, press the switch all the way down and release 
within one second to enter into standby mode. In this mode, the light will 
consume small amounts of power to maintain the settings in the MCU 
(micro control unit) but appear to be turned off. When in standby mode 
the power indicator light will flash once every three seconds to show the 
location of the light.
With the light turned on, press the switch all the way down and hold for 
more than one second. The light will turn off and enter into lockout mode. 
Lockout mode consumes almost no battery power and prevents the light 
from accidentally turning on. Holding the switch for more than one second 
to exit the lockout mode.

NB:

 When entering lockout mode, the power indicator will flash to 

indicate specific battery voltage. Please refer to the “Power Tips” 
section of this manual for details.

Special Strobe / SOS mode and 

Location Beacon 

With the light turned on, press the switch all the down twice in quick 
succession to enter strobe mode. When in strobe mode, press the switch 
all the way down and hold for more than one second to cycle through 
strobe, SOS and location beacon modes. To select any of these modes 
simply release the switch when it is displayed. To turn off the light fully 
press and release the switch. 

EA8

SIZE

Nominal voltage

Usability

Primary AA battery

AA

1.5V

Y (Recommended)

Rechargeable AA battery

AA

1.2V

Y (Recommended)

Primary AA Lithium battery

L91

1.5V

Primary LiFePO4 battery

14500

3.2V

Rechargeable Li-ion battery

14500

3.7V

N (Banned)

N (Banned)

NOTICE

The above data has been measured in accordance with the international 

flashlight testing standards ANSI/NEMA FL1 using 8 x 1.2V 2400mAh AA 

batteries under laboratory conditions. The data may vary slightly during 

real-world use due to battery type, individual usage habits and environmental 

factors.

Accessories

 

Quality holster, lanyard, spare O-ring

Battery Options

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