Petzl Accu 2 Ultra
Here's what other sites are saying:
Free Shipping. Petzl Accu 2 Ultra Rechargeable Battery FEATURES of the Petzl Accu 2 Ultra Rechargeable Battery High-performance rechargeable battery Offers the perfect balance between capacity and compactness, making it comfortable on the head Lithium-Ion technology for excellent performance at low temperatures Energy gauge on battery allows user to be aware of remaining battery life Rechargeable Lithium Ion battery 2000 mAh Lightweight rechargeable battery Large capacity and excellent performance at low temperatures, with Lithium Ion technology Integrated electronic protection circuit to prevent overcharging or completely discharging the rechargeable batteries Test button with power level indicator
It never hurts to have a replacement or spare battery for those extended caving expeditions. The Petzl ACCU 2 and 4 Ultra Rechargeable batteries for Ultra Rush, Ultra Rush Belt, Ultra Vario, and Ultra Vario Belt headlamps hold enough power for 2 to 73 hours of light (depending on the headlamp and mode). When the energy gauge lets you know that you are about to be more blind than a bat hundreds of feet below the surface, you'll be grateful for the spare.
Give your Petzl Ultra Rush Accu headlamp (sold separately) an extra boost of power with this Accu 4 Ultra rechargeable battery.
Petzl's high performance Accu 4 Ultra Rechargeable Battery is a 4000 mAh rechargeable battery for ULTRA and ULTRA BELT headlamps. Lithium Ion technology offers a greater capacity for reduced weight and excellent performance at low temperatures.
- Mountain Gear