1. Entwodiksyon
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. Pwodwi souview ak Karakteristik
The Nitecore EDC31 is a high-performance compact flashlight designed for everyday carry and tactical applications. It features advanced technology and robust construction.
Karakteristik kle:
- dirije: Utilizes a 9-core UHi 20 MAX LED with a maximum output of 3,500 lumens.
- Distans gwo bout bwa: Achieves a peak beam intensity of 35,630cd and a maximum throw of 380 meters.
- Mòd klète: Offers 4 brightness levels, including specialized SEARCH and LUMIN SHIELD modes.
- Batri: Powered by a built-in 3,800mAh Li-ion battery, providing a runtime of up to 57 hours.
- Chaje: Features an intelligent Li-ion battery charging circuit with a USB-C charging port.
- Blokaj: Equipped with a Rapid Lock™ switch for Half Lockout Mode and Full Lockout Mode to prevent accidental activation.
- Konstriksyon: Constructed from aluminum alloy with a HA III military-grade hard-anodized finish.
- Dirab: IP68 rated for waterproofing and dustproofing (2 meters submersible) and impact resistant to 2 meters.
- Teknoloji: Incorporates Advanced Power Cut-Off (APC) technology for ultra-low standby power consumption and an Advanced Temperature Regulation (ATR) module.

Imaj 2: Plis paseview 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. Enstalasyon
3.1 Unboxing
Lè w ap ouvri pake a, asire w ke tout konpozan yo la:
- Nitecore EDC31 Flashlight (with built-in battery)
- USB-C Chaje Kab
- Lanyard (if included in your specific package)
- Pocket Clip (pre-installed or included)
3.2 Premye chaj
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. Operasyon Enstriksyon
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 Brightness Levels and Special Modes
The flashlight offers 4 standard brightness levels and two special modes:
- Mòd Estanda: 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:
- Mwatye Lockout mòd: 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.
- Debloke: 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. Chaje
The EDC31 is equipped with a built-in 3,800mAh Li-ion battery and a USB-C charging port.
6.1 Pwosedi chaje
- Jwenn pò chaje USB-C a sou flach la.
- 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 Ekspozisyon Nivo Pouvwa
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. Antretyen
7.1 Netwayaj
Netwaye kò flach la regilyèman avèk yon twal mou, damp cloth. For the lens, use a lens cleaning cloth to avoid scratches. Do not use harsh chemicals or abrasive materials.
7.2 Enpèmeyablite
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 Depo
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.
NAN. Depanaj
If you encounter issues with your Nitecore EDC31, refer to the following common problems and solutions:
| Pwoblèm | Kòz posib | Solisyon |
|---|---|---|
| Flach pa limen. | Batri ap vide. Flashlight is in lockout mode. | Chaje batri a. Disengage the Rapid Lock™ switch. |
| Limyè ki soti a fèb oswa li ap tranble. | Batri ki ba. Pòv kontak. | Rechaje batri a. Ensure the tail cap is tightened. |
| Flashlight gets hot during use. | High brightness mode used for extended periods. | This is normal due to the Advanced Temperature Regulation (ATR) module. Reduce brightness if discomfort occurs. |
| Chaje pa kòmanse. | Pwoblèm kab oswa sous kouran. Charging port obstruction. | Eseye yon lòt kab USB-C oswa yon lòt sous kouran. Tcheke pò a chaje pou debri. |
If the problem persists after attempting these solutions, please contact Nitecore customer support.
9. Espesifikasyon
| Karakteristik | Spesifikasyon |
|---|---|
| Maksimòm Sòti | 3,500 Lumen |
| Distans Maksimòm Gwo bout bwa | 380 mèt |
| Max Beam Intensity | 35,630 CD |
| Max Runtime | 57 èdtan 0 minit |
| dirije | NiteLab UHi 20 MAX (9-core) |
| Reflektè | OP (Orange Peel) |
| Batri | Bati-an 3,800mAh Li-ion batri |
| Mòd espesyal | LUMIN SHIELD, SEARCH |
| Longè | 113.2 mm (4.46 pous) |
| Gwosè tèt | 23.0 mm (0.91 pous) |
| Pwa | 100 g (3.53 ons) |
| Materyèl | Aluminum Alloy (HA III Military Grade Hard-Anodized Finish) |
| Evalyasyon ki enpèmeyab | IP68 (2 mèt submersible) |
| Rezistans enpak | 2 mèt |
| Port chaje | USB-C |
10. Garanti ak sipò
10.1 Garanti manifakti a
Nitecore products are covered by a warranty against defects in materials and workmanship. Please refer to the official Nitecore website or your purchase documentation for specific warranty terms and duration.
10.2 Sipò pou Kliyan
For technical assistance, warranty claims, or further inquiries, please contact Nitecore customer support through their official websit entènèt la oubyen magazen kote ou te achte pwodwi a.