Will charge any brand of rechargeable batteries protection against short circuits amp polarity lcd display for charging status turn off when batteries are full worldwide usage 100v 240v power 7 x more photos on every charge verses standard alkaline batteries compatible for aa amp aaa batteries charge times 4aa 1300mah charge time 30mins 2aa 2700mah charge time 1hr 4aa 2700mah charge time 15hrs 4aaa 700mah charge time 1hr 2aaa 1000mah charge time 1hr 4aaa 1000mah charge time 15hrs