The fan was bought for camping. I don't know exactly how long it lasts on a single charge, but I let it run for 4 hours before turning it off. It was still running and the battery seemed dead. I expect at least 4.5 in height. I like it more than I thought. It also moves more air than expected. AC power is required for charging. It would be nice to be able to charge it with an RV battery or DC solar. Otherwise, I like him very much and will accompany me on many trips! Disclaimer, this device was sent to me for self review on my YouTube channel.
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