Review on O2COOL 10-Inch Battery Operated Fan - Portable with Rechargeable Battery, Multiple Power Options - AC/DC Adapter, USB Port for Emergencies, Camping, Travel, Indoor & Outdoor Use (Orange) by Mark Powell

The battery stopped working after only two uses. I did what the directions said and charged it for a full night in the stop position. It says it won't charge when it's in the off position, the light will flash when it's charging and go off when it's done. It will also charge at low or high speed. However, in order to start charging, you must start from the off position. I charged the internal battery for about 10 hours and it stopped working. The light doesn't even flicker. What a waste of money if you buy it for that reason. On the other hand, I'm a truck driver and having it here on the bunk at low speed is enough to get the air moving and it's not that noisy. I bought it because it comes with a cigarette lighter or home adapter. I'm not too happy that it's not working anymore as many of these reviews say.