The Ledlenser ML4 is the most compact lantern in the Ledlenser range — 97mm tall, 71g with battery and small enough to live on a keyring, clip to a rucksack carabiner or fit in any pocket. Despite its size, it delivers 300 lumens of glare-free Micro Prism illumination, an IP66 water jet resistant rating, a 2-metre drop test, dual power source capability and up to 45 hours of runtime on a single charge. Available in two versions: cool white (3,700K–4,200K) and warm white (2,500K–3,000K) — choose the colour temperature that suits your intended use.
The dual power source is the ML4's most practically important feature for outdoor use: the included 14500 Li-ion battery charges via the magnetic contact charging system without needing to be removed from the housing, and a standard AA alkaline battery can be used as a direct drop-in alternative when charging is not available. On a multi-day trip far from power, an AA cell keeps the ML4 operational from any petrol station, supermarket or outdoor retailer worldwide.
Available Variants:
- ML4: Cool White (3,700K–4,200K) — bright, neutral output for task-focused use; camping, outdoor navigation and general illumination
- ML4 Warm White: Warm White (2,500K–3,000K) — softer, warmer output for ambient and relaxed evening use; CRI 80 for more natural light quality
Light Modes:
Cool White (ML4):
- Boost — 300 lumens / 2.5-hour runtime
- Power — 150 lumens / 8-hour runtime
- Low power — 5 lumens / 45-hour runtime
- Blink — signalling mode
- Red light — Low, Mid and Blink
Warm White (ML4 Warm Light):
- Boost — 300 lumens / 2.2-hour runtime
- Power — 150 lumens / 7-hour runtime
- Low power — 5 lumens / 40-hour runtime
- Blink — signalling mode
- Red light — Low, Mid and Blink
Endless Benefits:
- Micro Prism Technology — glare-free, efficient illumination across the full 9-LED array for comfortable close-range area lighting.
- 300 lumens / five white modes plus red light — Boost, Power, Mid Power, Low Power and Blink; red light mode (Low, Mid and Blink) preserves night vision and functions as a safety signal.
- Dual Power Source — rechargeable 14500 Li-ion battery (magnetic contact charging, 150-minute charge time) or standard AA alkaline as a direct alternative; no modification required.
- Carabiner snap hook — attach to rucksack, tent loop, belt, strap or keyring; the ML4 is always within reach.
- Fluorescent elements — on switch and strip visible in the dark; locate the lantern without a secondary light source.
- Transport lock — prevents accidental activation during storage and carry.
- IP66 rated and 2-metre drop tested — water jet resistant and impact tested for sustained outdoor use.
- Up to 45 hours runtime — 5 lumens at low power for extended ambient use; 2.5 hours at full 300-lumen output.
Technical Specifications:
- Maximum output: 300 lumens
- Battery: 14500 Li-ion / 750mAh / 3.7V (included) / AA alkaline compatible
- Charge time: 150 minutes via Magnetic Contact Charging System
- IP rating: IP66 (water jet resistant)
- Drop tested: 2 metres
- Operating temperature: -20°C to +40°C
- Weight (with battery): 71g
- Length: 97mm / Head diameter: 34.5mm / Tube diameter: 29mm
- Cool White colour temperature: 3,700K–4,200K
- Warm White colour temperature: 2,500K–3,000K / CRI 80
- Number of LEDs: 9
Inside the Box:
- 14500 Li-ion rechargeable battery
- Magnetic contact charging cable
