The battery pack, which holds 3 LR3/AAA batteries, provides a back-up solution in case the rechargeable battery is completely discharged. It allows the REACTIK and REACTIK + headlamps to be used in remote areas where the battery cannot be recharged.- Pack for 3 LR3/AAA batteries, to replace the REACTIK and REACTIK + headlamps rechargeable battery- Allows headlamp to be used for activities where recharging the original battery is uncertain- Light output corresponds to 40 % of the output provided with the Lithium-Ion rechargeable battery- Headlamp burn time is identical with regular batteries and the rechargeable Lithium-Ion battery- Headlamp burn time increases with (non-rechargeable) lithium batteries or Ni-MH batteries- Constant lighting mode onlySpecifications:- Weight (with batteries): 45 g- Energy: 3 AAA/LR3 batteries (not included)- Battery compatibility: alkaline, rechargeable Ni-MH and lithium- Works for constant lighting mode only- Light output corresponds to 40 % of the output provided with the Lithium-Ion rechargeable batteryIf you are looking for Petzl Batery Pack Reactik & Reactik +, you are lucky. In our running & triathlon store, you have the best price available and with the confidence that the store gives you like Petzl Exclusive UK. Do not wait any longer and place the order of your Lighting products. Petzl Exclusive UK offers an exclusive range of Accessories for different kind of activities. Our Accessories are designed to suit your needs and give you complete control, no matter of weather.