General Charging InformationA rechargeable Lithium ion battery built-in to each product provides power to Light Emitting Diodes (LEDs), which create the illumination in all Glo-equipment. The batteries are recharged via the USB port. By using full powered USB hubs the glo-equipment fast charges from empty to 80% charged in 2 hours.The batteries do not suffer from “memory effect” and therefore do not need to be discharged before charging. If desired, it is also possible to recharge the equipment without powering up your computer by using an AC adaptor with USB output. Vehicle auxillary socket adaptors are also available.