If you do have a battery that is overheated, allow it ample time to cool down before trying to charge it. Ryobi 40V batteries are designed to be used with outdoor tools, so they're likely to ...

For example, if you have a 40-volt Ryobi battery laying around and the battery for an 18-volt tool gets lost or dies, you may wonder if you can put the 40V battery in the 18V tool. Sadly ...