1. Úvod
Thank you for choosing the Nitecore EDC31 Compact EDC Flashlight. This manual provides detailed instructions for the proper use, maintenance, and troubleshooting of your device. Please read this manual thoroughly before operation to ensure optimal performance and safety.

Image 1: Nitecore EDC31 Compact EDC Flashlight. This image displays the flashlight from a front-side angle, highlighting its compact design and textured body.
2. Konec produktuview a funkce
The Nitecore EDC31 is a high-performance compact flashlight designed for everyday carry and tactical applications. It features advanced technology and robust construction.
Klíčové vlastnosti:
- LED: Utilizes a 9-core UHi 20 MAX LED with a maximum output of 3,500 lumens.
- Beam Vzdálenost: Achieves a peak beam intensity of 35,630cd and a maximum throw of 380 meters.
- Režimy jasu: Offers 4 brightness levels, including specialized SEARCH and LUMIN SHIELD modes.
- Baterie: Powered by a built-in 3,800mAh Li-ion battery, providing a runtime of up to 57 hours.
- Nabíjení: Features an intelligent Li-ion battery charging circuit with a USB-C charging port.
- Uzamčení: Equipped with a Rapid Lock™ switch for Half Lockout Mode and Full Lockout Mode to prevent accidental activation.
- Konstrukce: Constructed from aluminum alloy with a HA III military-grade hard-anodized finish.
- Trvanlivost: IP68 rated for waterproofing and dustproofing (2 meters submersible) and impact resistant to 2 meters.
- Technologie: Incorporates Advanced Power Cut-Off (APC) technology for ultra-low standby power consumption and an Advanced Temperature Regulation (ATR) module.

Obrázek 2: Konecview of Nitecore EDC31 key features. This image highlights the 9-core UHi 20 MAX LED, Rapid Lock mechanism, LUMIN SHIELD output, and compact design.

Image 3: NiteLab UHi LED technology. This image explains the UHi LED family and its design for optimal lighting effect and beam distance.
3. Nastavení
3.1 Rozbalení
Po otevření balení se ujistěte, že jsou přítomny všechny součásti:
- Nitecore EDC31 Flashlight (with built-in battery)
- Nabíjecí kabel USB-C
- Lanyard (if included in your specific package)
- Kapesní klip (předinstalovaný nebo součástí balení)
3.2 Počáteční poplatek
Before first use, it is recommended to fully charge the flashlight. Connect the USB-C charging cable to the flashlight's charging port and a power source (e.g., USB wall adapter, computer USB port). The power indicators will show charging status.
4. Návod k obsluze
4.1 Tactical Tail Button Operation
The EDC31 features a tactical tail button for intuitive control:
- Half Press: Adjusts brightness levels or accesses SEARCH mode.
- Full Press: Turns the flashlight On/Off or activates LUMIN SHIELD.

Image 4: Tactical Tail Button for intuitive operation. This image illustrates the functions of a half press (brightness adjustment/SEARCH) and a full press (On/Off/LUMIN SHIELD).
4.2 Úrovně jasu a speciální režimy
The flashlight offers 4 standard brightness levels and two special modes:
- Standardní režimy: Cycle through various brightness levels with a half press of the tail button when the light is on.
- SEARCH Mode: From off, half press and hold the Tactical Tail Button to access SEARCH mode (1500 Lumens, 380m range). Release to turn off. Note: SEARCH mode is unavailable in Full Lockout Mode.
- LUMIN SHIELD: From off, full press and hold the Tactical Tail Button to activate LUMIN SHIELD (3500 Lumens). Release to turn off.

Image 5: Tactical SEARCH Mode demonstration. This image shows the flashlight beam reaching 380 meters, illustrating its ultra-long-range coverage.
5. Lockout Modes
The EDC31 features a Rapid Lock™ mechanism to prevent accidental activation:
- Režim polovičního uzamčení: Slide the Rapid Lock™ to the first position. This prevents accidental full presses but allows access to momentary SEARCH and LUMIN SHIELD modes.
- Full Lockout Mode: Slide the Rapid Lock™ to the second position. This completely disables all functions of the flashlight, preventing any accidental activation.
- Odemknout: Slide the Rapid Lock™ back to the unlocked position to resume normal operation.

Image 6: Rapid Lock™ for seamless operation. This image provides a close-up view of the Rapid Lock switch, demonstrating its two lockout positions.
6. Nabíjení
The EDC31 is equipped with a built-in 3,800mAh Li-ion battery and a USB-C charging port.
6.1 Postup nabíjení
- Najděte nabíjecí port USB-C na svítilně.
- Connect the provided USB-C cable to the flashlight and a USB power source.
- The power indicators will illuminate to show the charging status.
- Charging is complete when all power indicators are steadily lit.

Image 7: Built-in 3800 mAh Li-ion Battery. This image shows the internal battery, emphasizing its high capacity and USB-C rechargeability.
6.2 Power Level Display
The flashlight features power indicators to display the remaining battery power:
- 4 Constant-on: 75 % - 100 %
- 3 Constant-on: 50 % - 75 %
- 2 Constant-on: 25 % - 50 %
- 1 Constant-on: 0% - 25% (Please charge the product as soon as possible)

Image 8: Power Level Display. This image illustrates the four-segment power indicator lights on the flashlight, showing battery status from 0% to 100%.
7. Údržba
7.1 Čištění
Pravidelně čistěte tělo svítilny měkkým hadříkemamp cloth. For the lens, use a lens cleaning cloth to avoid scratches. Do not use harsh chemicals or abrasive materials.
7.2 Hydroizolace
The EDC31 is IP68 rated, meaning it is dustproof and submersible to 2 meters. Ensure the USB-C port cover is securely closed before exposing the flashlight to water.
7.3 Skladování
Store the flashlight in a cool, dry place. For long-term storage, it is recommended to charge the battery to approximately 50% every three months to maintain battery health.
8. Řešení problémů
If you encounter issues with your Nitecore EDC31, refer to the following common problems and solutions:
| Problém | Možná příčina | Řešení |
|---|---|---|
| Svítilna se nezapne. | Baterie je vybitá. Svítilna je v režimu uzamčení. | Nabijte baterii. Disengage the Rapid Lock™ switch. |
| Světelný výstup je slabý nebo bliká. | Slabá baterie. Špatný kontakt. | Nabijte baterii. Ensure the tail cap is tightened. |
| Svítilna se během používání zahřívá. | High brightness mode used for extended periods. | This is normal due to the Advanced Temperature Regulation (ATR) module. Reduce brightness if discomfort occurs. |
| Nabíjení se nespustí. | Problém s kabelem nebo zdrojem napájení. Zablokování nabíjecího portu. | Zkuste jiný kabel USB-C nebo zdroj napájení. Zkontrolujte nabíjecí port, zda neobsahuje nečistoty. |
If the problem persists after attempting these solutions, please contact Nitecore customer support.
9. Specifikace
| Funkce | Specifikace |
|---|---|
| Maximální výkon | 3,500 XNUMX lumenů |
| Maximální vzdálenost paprsku | 380 metrů |
| Max Beam Intensity | 35,630 cd |
| Maximální doba běhu | 57 hodiny 0 minut |
| LED | NiteLab UHi 20 MAX (9-core) |
| Reflektor | OP (Orange Peel) |
| Baterie | Vestavěná 3,800mAh Li-ion baterie |
| Speciální režimy | LUMIN SHIELD, SEARCH |
| Délka | 113.2 mm (4.46 palce) |
| Velikost hlavy | 23.0 mm (0.91 palce) |
| Hmotnost | 100 g (3.53 oz) |
| Materiál | Aluminum Alloy (HA III Military Grade Hard-Anodized Finish) |
| Hodnocení voděodolnosti | IP68 (2 metry ponoření) |
| Odolnost proti nárazu | 2 metrů |
| Nabíjecí port | USB-C |
10. Záruka a podpora
10.1 Záruka výrobce
Nitecore products are covered by a warranty against defects in materials and workmanship. Please refer to the official Nitecore webKonkrétní záruční podmínky a dobu trvání naleznete na webových stránkách nebo v dokumentaci k nákupu.
10.2 Zákaznická podpora
For technical assistance, warranty claims, or further inquiries, please contact Nitecore customer support through their official webwebu nebo prodejce, od kterého jste produkt zakoupili.





