... enjoyment. 2, built more staying power rechargeable lithium-ion battery Advanced lithium-ion battery charging time is short, use a longer ... a real full-function keyboard mini QWERT. Advanced lithium-ion battery charging time is short, use a longer ... charge current: <300mA. 11, lithium-ion rechargeable battery. 12, LED display, low battery display. Charge display. Battery is fully charged display. CAPS ...