Quick & Efficient Charge :One of the most unique characteristics of rechargeable lithium-ion battery is that they cannot be "quick charged” like other rechargeable batteries. Rather, most digital camera batteries require what's called a "constant current / constant voltage” charge until charging is complete. Because lithium-ion chemistry is so efficient, even a high power digital camera battery charges quickly in standard chargers. The Delkin Power Dual Universal Battery charger uses similar charging methodology as your original equipment manufacturer, ensuring a quick and efficient charge every time.