FAQ

Common user questions and troubleshooting

Q: How do I troubleshoot when the flashlight fails?
A. Common solutions include:
• Charge or replace the battery.
• Clean the battery contacts.

Problem phenomenon	Possible reasons	Solution
Flashlight cannot be turned on	Battery reverse installation/contact oxidation	Check the direction of the battery and clean the contacts with alcohol cotton
Charging abnormality	Water in the charging port/Type-C dust accumulation	Restart charging after drying, and make sure the charging port is dry
Waterproof failure	Sealing ring aging/no silicone grease	Avoid contact with water, replace the seal every 6 months and apply silicone grease
Automatic downshift in extremely bright mode	Overheat protection triggered	Stop using for 5 minutes to dissipate heat, avoid continuous extreme brightness for more than 10 minutes
Mode failure/low brightness/strobe	Battery contact is poor, electric shock oxidation, battery incompatibility	Replace the original battery and clean the contacts

Q2 How do I properly maintain my flashlight?
A:
• Remove the battery before long-term storage: When the flashlight is not used for a long time, be sure to remove the battery and charge it every 3 months to avoid emptying the battery to keep it in the best condition.
• Avoid using non-original batteries: Using non-original batteries may trigger overvoltage protection and affect the normal operation of the flashlight. It is recommended to always use the recommended original batteries to ensure safety and performance.

Core Technology

Q1: What are constant current drive (CC Drive) and constant voltage drive (DC Drive)?
A:
• Constant current drive: Always maintain a stable current, even if the battery voltage drops, the brightness can remain unchanged, suitable for high brightness demand scenarios.
• Constant voltage drive: The output voltage is fixed, but the brightness will decay with power.

Q3: What is the impact of color temperature on use?
A: The color temperature value determines the color of the light:

Color temperature range	Light characteristics	Applicable scenarios
2700-3500K	Warm yellow light, similar to incandescent lamp	Camping/night reading
4000-5000K	Neutral white light, close to daylight	Outdoor hiking
6000-6500K	Cool white light, high contrast	Search and rescue/tactical use

Optical performance

Q4: What is the difference between lumen (lm) and candela (cd)?
A:
• Lumen: total luminous output (e.g. 1000lm ≈ 100 watt bulb).
• Candela: intensity at the center of the light beam (e.g. 10,000cd ≈ 200 meters).
Buying tips: Look at lumens for large-area lighting and candela for long-distance lighting.

Q5: What is ANSI standard testing?
A: ANSI standard testing is a key mechanism to ensure product quality, safety and consistency. It builds trust between consumers and manufacturers by providing a transparent evaluation process and certification system.

Q6: Which is better, TIR lens or reflector?
A:

Type	Features	Applicable scenarios
TIR lens	Uniform light spot, efficiency 92%+	Floodlighting (such as EDC series)
Metal reflector	Strong long-range capability, focusing increased by 30%	Search/tactical flashlight (such as TH series)

Q7: Is the color rendering index (CRI) important?
A: The higher the CRI value, the more realistic the color reproduction:
• CRI ≥ 80: Meets daily use.
• CRI ≥ 90: Recommended for photography/outdoor measurement.
• CRI ≥ 95: Archaeological/medical professional requirements.
Jetbeam RRT series offers CRI95+ option.

Circuit and Safety

Q8: How does overheat protection work?
A: When the temperature sensor detects over 60℃:
1. Automatically reduce the brightness to a safe level.
2. Restore the original brightness after the barrel temperature drops to 45℃.
Operational suggestions: Use the ultra-bright mode continuously for no more than 10 minutes.

Q9: What are the advantages of batteries with protection boards?
A: Triple safety protection:
• Over-discharge protection: Automatically cut off the power when the voltage is lower than 2.8V.
• Overcharge protection: Cut off the input when the charging voltage exceeds 4.2V.
• Short-circuit protection: Abnormal current triggers the circuit breaker.
Jetbeam original batteries all have built-in protection boards.

Brand Technology

Q1: What are the core technical advantages of Jetbeam flashlights?
A: We use the military-standard three-level oxidation treatment process (standard for all series) to improve wear resistance. Many models use end-face conductive design, silicone grease sealing, and the waterproof level reaches IPX-8 (can be immersed in 2 meters deep water for 30 minutes). Innovative integrated multi-light source system (white light, UV, laser) and tactical operation logic, quickly switch modes through the tail three-button switch and side button.

Q2: Can JETBeam flashlights be used for professional purposes?
A: Of course! Our tactical series is trusted by law enforcement, outdoor guides and industrial teams, and the adjustable focus beam and flash mode are very suitable for emergency use.

After-sales service

Q3: How long is the product warranty period?
A: We provide a 5-year limited warranty (please visit the policy), and consumable parts such as waterproof rings enjoy a 6-month free replacement service.

Q4: How to identify genuine products?
A: The serial number is laser engraved on the pen barrel (contact email to identify genuine products).

FAQ

FAQ

Common user questions and troubleshooting

Core Technology

Optical performance

Circuit and Safety

Brand Technology

After-sales service

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