Watch the children use ofEPI's LED lantern, which was created especially for EPI by Enerizer. This custom-designed lantern has a nickle-metal hydride (NiMH) battery pack capable of providing children’s studies with over 40 hours of bright light between recharges. One specific thing that sets the EPI smart LED lanterns apart from other such lanterns is the chip found within each that manages recharging from the large storage battery, as well as power to the LED bulbs. The lantern service life is expected to be greater than five years.