The i-Run team says
The Petzl Accu NAO+ Rechargeable Lithium-ion battery brings a second life to your Petzl NAO+ headlamp.
Be sure that you will not miss light anymore during your trails or night outings.
The battery has a charge indicator.
Key points of the Petzl Accu NAO+ rechargeable battery:
• Micro USB port: charging
• Charge indicator on the battery
• Red LED: signal your location
• Performs well at low temperature
• Lithium-ion battery
• Capacity: 2600 mAh
• Number of charging cycles: 300
• Charging time: 6h
• Certifications: CE, FCC, IC, ARIB