Portable Fan Summer USB Mini Folding Portable Electric Fan Desktop Cartoon Student Pocket Small Fan

1-Q8\\Q9 internal storage battery, 900 mah capacity, full charge takes about 3 hours, use time around 5 hours

2-XHO4 internal battery, 500 mah capacity, full charge approximatelyNeed to be2 hours or so, use time 3-5 hours or so