The i-Run team says
The Petzl rechargeable battery brings a reliable and long-lasting supply to your Petzl headlamp.
It adapts to the Reactik and Reactik+ headlamps.
This 1800 mAh Lithium-ion rechargeable battery ensures a high performance lighting for your trail or running sessions by night, even in extreme conditions (-20 °C to 50 °C). You can charge your Petzl battery via a USB cable (included).
Key points of the Petzl rechargeable battery:
• 1800 mAh lithium-ion rechargeable battery
• Reliable and long-lasting power supply
• Compatible with Petzl Reactik and Reactik + headlamps
• Resistant to extreme temperatures (-20°C to 50°C)