Instrukcja obsługi Nitecore EC4GT
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®
The All-Round Flashlight Expert User  Manual
EC4GT
Features
·A rugged, lightweight flashlight made with unibody die-cast technology
·Utilizes a CREE XP-L HI V3 LED
·Maximum output up to 1,000 lumens
·Maximum throw up to 475 meters
·Driven by two rechargeable 18650 Li-ion batteries for runtime up to 380 hours
·Dual switch design offers unprecedented ease of use
·Thumbscrew lock on tailcap doubles as a tripod connector
·5 brightness levels and 3 special modes available
·Direct access to ultra-low and turbo output
·Features advanced temperature regulation (ATR) technology
·A power indicator built into the on/off switch indicates remaining battery power (Chinese patent 
   NO. ZL201220057767.4)
·An SMO reflector offers blinding and far-reaching beams
·Stainless steel retaining ring protects core components from damage
·Reverse polarity protection
·Toughened ultra-clear mineral glass with anti-reflective coating
·Solid, lightweight aerospace grade aluminum alloy construction
·Waterproof in accordance with IPX-8 (2 meters submersible)
·Impact resistant to 1.5 meters
·Tail stand capability
Dimensions   
Length: 6.1” (155mm) 
Head diameter: 1.58” (40mm) 
Tube: 1.58” × 1.12” (40mm×29mm) 
Weight: 6.03oz (171gram) (without battery)
Brightness Levels
With the light turned on, press the mode switch repeatedly to cycle through brightness levels of       
ultralow, low, medium, high and turbo. This mode has memory effect that ensures direct access to 
the brightness level last used.
Direct Access to Ultralow/Turbo
With the light turned off, press and hold the on/off switch for over one second to enter ultralow       
level (1 lumen).
With the light turned off, press and hold the mode switch for over one second to enter turbo       
level (1000 lumens).
Special Modes (Strobe/Location Beacon/SOS)
With the light turned on, press and hold the mode switch for over one second to enter strobe       
mode. To cycle through location beacon/SOS/strobe modes, press and hold the mode switch      for 
over one second again. To exit, press the on/off switch      to turn the light off.
Strobe Ready
With the light turned off, press the mode switch      twice in quick succession to enter strobe mode 
directly. To exit, simply press any switch to turn the light off.
Lockout/Unlock
With the light turned on, press and hold both switches for over one second to turn the light off and 
enter lockout mode. In this mode, the two switches will not have their respective functions, thus 
preventing accidental activation. To unlock, press and hold both switches for over one second 
again. 
NOTE:
1. When in lockout mode, the EC4GT will remain operational using 2x18650 batteries for over 12   
    months.
2. When the EC4GT is kept in a backpack or left unused for extended periods, Nitecore  
    recommends batteries are removed to cut off power entirely and thus prevent battery leakage or  
    accidental activation.
Power Tips
After battery installation or with the mode switch being pressed when the light is off, the blue       
power indicator built into the switch will blink to indicate remaining battery power. The power 
indicator will blink three times when power levels are above 50%; twice when power levels are 
below 50%; and once when battery is close to depletion.
ATR Technology
Advanced temperature regulation (ATR) technology allows the EC4GT to dynamically adjust output 
performance according to its internal temperature. This prevents damage from overheating and 
prolongs its working life.
Changing / Charging Battery
Batteries should be replaced or recharged when output appears to be dim or the flashlight 
becomes unresponsive.
Maintenance
Every 6 months, threads should be wiped with a clean cloth followed by a thin coating of 
silicon-based lubricant.
Warranty Details 
Our authorized dealers and distributors are responsible for warranty service. Should any problem 
covered under warranty occurs, customers can contact their dealers or distributors in regards to 
their warranty claims, as long as the product was purchased from an authorized dealer or 
distributor. NITECORE’s Warranty is provided only for products purchased from an authorized 
source. This applies to all NITECORE products.
Any DOA / defective product can be exchanged for a replacement through a local distributor/dealer 
within the 15 days of purchase. After 15 days, all defective / malfunctioning NITECORE® products 
can be repaired free of charge for a period of 60 months (5 years) from the date of purchase. 
Beyond 60 months (5 years), a limited warranty applies, covering the cost of labor and 
maintenance, but not the cost of accessories or replacement parts.
The warranty is nullified if the product(s) is/are broken down, reconstructed and/or modified by 
unauthorized parties, or damaged by batteries leakage.
For the latest information on NITECORE® products and services, please contact a local 
NITECORE® distributor or send an email to service@nitecore.com.
※All images, text and statements specified herein this user manual are for reference purpose only. 
Should any discrepancy occurs between this manual and information specified on 
www.nitecore.com. Sysmax Industry Co., Ltd. reserves the rights to interpret and amend the 
content of this document at any time without prior notice.
Output & Runtime 
NOTICE:
The stated data has been 
measured in accordance 
with the international 
flashlight testing standards 
ANSI/NEMA FL1, using 2 
x Nitecore 18650 Li-ion 
batteries (3.7V, 3400mAh) 
or 4 x CR123 batteries 
(3V, 1700mAh) under 
laboratory conditions. The 
data may vary in 
real-world use due to 
different battery usage or 
environmental conditions.
Operating Instructions 
Battery Installation
As illustrated, rotate the thumbscrew lock counterclockwise and screw the tail cap off. Insert 
batteries with the negative (-) ends contacting the springs, and then tighten the thumbscrew lock 
clockwise. 
Accessories
Quality holster, lanyard 
Battery Options
Thanks for purchasing NITECORE!
SYSMAX Industry Co., Ltd.
TEL:  +86-20-83862000 
FAX:  +86-20-83882723  
E-mail:  info@nitecore.com  
Web:  www.nitecore.com
Address:  Rm1401-03, Glorious Tower, 850 East Dongfeng Road, 
Guangzhou, China 510600
NOTE: After battery insertion, the 
power indicator light will blink to 
indicate remaining battery power. 
Please refer to the “Power Tips” 
section of this manual for details.
WARNING: 
1. Do not mix rechargeable and 
    non-rechargeable batteries. 
2. Do not mix batteries of different 
    types/brands.
20160420
TYPE
Nominal voltage
Compatible
Primary Lithium battery  CR123 3V Y (Recommended)
18650 Rechargeable Li-ion battery 18650 3.7V Y (Recommended)
Rechargeable Li-ion battery RCR123 3.7V Y
TURBO HIGH MID LOW
LUMENS
420
LUMENS
1000
LUMENS
200
LUMENS
50
4
h min45
2
h
25
h
10
h
3
h
1h15
min
16
h min30
7
h min30
ULTRALOW
LUMEN
1
380
h
170
h
475m 
(Beam Distance)
56,500cd 
(Peak Beam Intensity)
 IPX-8, 2m 
(Waterproof AND Submersible)
1.5m 
(Impact Resistant)
4×CR1232 ×18650
On/Off Operation
To switch on: Press the on/off switch      to turn the light on
To switch off: Press the on/off switch      again to turn the light off and enter standby mode
Standby Mode
With the light turned on, press and hold the on/off switch       for over one second to turn the light off and 
activate the power indicator to blink once every three seconds, thus helping users locate the EC4GT in 
dark environments. When powered by 2x18650 batteries, the EC4GT can operate for over 6 months with 
the power indicator on, or remain on standby for over 12 months with the power indicator off. 
Thumbscrew lock
Please find us on facebook: 
NITECORE Flashlights
Specyfikacje produktu
| Marka: | Nitecore | 
| Kategoria: | Flesz | 
| Model: | EC4GT | 
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