Petzl Ac Charger. Specifications for Petzl Ac Charger: Manufacturer: Petzl Color: Black Features of Petzl Ac Charger : 100/240 V EUR/US compatible wall charger Compatible with ACCU 2 and ACCU 4 ULTRA rechargeable batteries Charging time: ACCU 2 rechargeable battery: 4 hours ACCU 4 ULTRA rechargeable battery: 6 hours End-of-charge indicator light