The Sony BCG-34HW2KN Battery Charger is an economical option to rechargethe batteries of your camera or remote control. It can efficientlycharge up to two AA or AAA Ni-MH rechargeable batteries at a time.The primary battery detection feature alerts you in case this Sonycompact battery charger is turned on without attaching a battery.It also has a safety timer which extends the battery life by preventingovercharging. The worldwide voltage compatibility and EU plug makeit great for use in most parts of the world. It comes with two AAmulti-use premium batteries with a power of 2100 mAh. These rechargeablebatteries are an eco-friendly choice.