PETZL - AC Charger for Ultra Headlamps POWERFUL DURABLE CHARGER: 100/240 V EUR/US compatible wall charger RECHARGE TIME: ACCU 2 ULTRA rechargeable battery: 3 hours. ACCU 4 ULTRA rechargeable battery: 5 hours. INDICATOR LIGHT: End-of-charge indicator light TRAVEL WITH IT: Comes with interchangeable European and North American wall charger COMPATIBLE WITH: Petzl ACCU 2 ULTRA and ACCU 4 ULTRA rechargeable batteries