The spare Lithium-Ion rechargeable battery guarantees high performance for the NAO headlamp, even at low temperatures. It recharges directly via USB with its integrated connection.- Simple universal charging via the micro USB port- Charge indicator on the battery- Performs well at low temperaturesSpecifications: - Weight: 95 g- Technology: Lithium-Ion- Capacity: 2600 mAh- Number of charging cycles: 300- Recharge time: 6 h- Certification(s): CEWould like to buy Petzl Accu Nao +? You are at the right place! In the category of Accessories at the online running & triathlon store you can find a big variety of different models at the best price. Find the best running & triathlon products, that adapt to your needs at Petzl Clearance Prices UK. Are you looking for a gift? Don´t miss also our Lighting sales.