Ryobi 4V USB Lithium batteries are really convenient and easy to recharge and have a really easy way to see if they are fully charged.

With a 2 Ah battery, the Ryobi misting fan can last up to 5 hours and 30 minutes on its low speed setting and 3 hours on its ...

We will ignore the 14.4V, 24V and 36V battery platforms. The 14.4V is on the way out, as there's not much need for an in-between size with current 12V being so powerful.