Home Improvement Ideas Tools and Equipments Is Ryobi 40v battery defective? 5 Proven techniques to fix it January 23, 2021March 25, 2021 Is your Ryobi 40v battery defective? So, you are on the perfect page. Ryobi 40V is a lithium-ion battery that delivers high performance from start to end. This battery has high… Share This Continue Reading