Ultraspire | 18650 Battery | Battery 3.4 Ah

Ultraspire | 18650 Battery | Battery 3.4 Ah

🔋 Reliable battery for your Lumen lamps

The Ultraspire 18650 Battery is specially programmed for a low amperage output, so you Lumen headlamp performs optimally – whether you're hitting the trails at night or training in the dark on the road. With a 3400 mAh capacity and up to 500 charge cycles This is the ideal replacement or extra battery to always be fully charged when you hit the road.

✅ Key Benefits

• 🔋 3400 mAh capacity – long lifespan for your Lumen
• ⚡ Optimized output – specially designed for Lumen lamps
• 🔄 Rechargeable & sustainable – up to 500 charge cycles
• 🌡️ Wide temperature range – reliable from -20°C to +60°C
• ⏱️ Fast charging – 2–3 hours with charger or 4–6 hours in lamp

📋 Specifications

• Type: 18650 Li-ion rechargeable battery
• Capacity: 3400 mAh (3.4 Ah)
• Nominal voltage: 3.7 V
• Charging voltage: 4.2–4.3 V
• Dimensions: Ø 18.1–18.55 mm x H 65.3 mm
• Loading time: 2–3 hours (on charger) | 4–6 hours (in lamp)
• Protection: Overcharge, overdischarge & short circuit
• Cycles: approx. 500 charging cycles
• Temperature: Charging 0–45°C | Discharging -20–60°C | Storage -5–35°C

🎯 Perfect for

Trail runners and ultra runners who with Ultraspire Lumen Lamps walk and a reliable spare battery want to take with you for long night runs or races.