Amazon 2023118 - Battery Charger

Up to 4 Ni-MH batteries will be fully charged within 4 hours (via power socket). With USB port for output
Charge up to 4 batteries: Charge 2 or 4 AA/AAA Ni-MH batteries at the same time. Cannot charge 1 or 3 batteries
LED lights will indicate when the rechargeable batteries are fully charged (red = charging, green = fully charged)
Perfect for travel: Built-in power conversion technology for worldwide use (100-240V AC)
Protects against wrong polarity charging