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The UltrAspire 18650 Rechargeable Battery is the spare rechargeable battery for UltrAspire's Lumen waist lights, programmed for a low-amperage output that gives the light the steady power it wants. Toss one in your pack and a long night on the trail stops being a runtime math problem.
It suits ultrarunners and night racers using a Lumen waist light, especially when the race clock runs past dark. You can charge it inside the light or on a separate charger, and UltrAspire rates it for a wide range of temperatures. A spare means a fresh battery is ready when the first one fades, without carrying a second lamp.
It powers the Lumen 600 5.0 and Lumen 850 Duo. Running the Lumen 800 Solstice? It takes the larger UltrAspire 21700 battery instead.
Specifications
- Materials
- Plastic
- Dimensions
- Ø 18.1–18.55 mm × 65.3 mm
- Battery
- Rechargeable 18650, 3,400 mAh, 3.7 V; charging time 4-6 h in the light or 2-3 h on a charger; 500 cycles
- Features
- Overcharge protection, Fast charge
- Compatibility
- UltrAspire Lumen 3D waist lights other than the Lumen 800 Solstice (e.g. Lumen 600 5.0, Lumen 850 Duo)
- Weight
- 48 g (Single battery)