Amazon Prime Members: AmazonBasics Battery Charger for Rechargeable AA and AAA NiMh Batteries

Battery Charger: 4-bay rapid battery charger (ONLY for NiMH batteries), with AC flip-down plug. Slim profile and switching power ability for worldwide use (100 AC to 240 AC; requires AC plug converted for non-American regions)
Fast-Charging: Fully charges 2 AA within 3.5 hours, 4 AA within 7 hours; 2 AAA within 2 hours, 4 AAA within 4 hours
Intelligent and Safe Charger: Plug-and-play charger with LED indicators. Charges each battery individually, instead of charging only pair of batteries like other designs. Latest battery detection technology indicates wrong polarity, with cut-off function to prevent overheating and overcharging (turns to trickle charge when battery is full)
Travel-friendly Charger: slim, lightweight, with foldable plug