Powerextra 3500mAh Ryobi 18V Replacement Battery Compatible with Ryobi ONE+ Ryobi P100 Ryobi P101 Cordless Power Tools Ryobi 18V Battery(2 pack) Battery Type: Ni-Mh / Voltage: 18V / Capacity: 3500mAh / Color: Yellow Compatible with: Ryobi P100, P101, P200, P211 and Ryobi C Series Ryobi CDI Series Certification: Powerextra products are CE & RoHS certified tested by manufacturer more safety and stability Built-in Protection against overcharging, over discharge, over current, provides short circuit protection and steady voltage circuit, all of these lengthen battery life. Guarantee: 30 days money back and 12 months limited Warranty from date of purchase, 24 hours warm-hearted service Powerextra is specialized in manufacturing power tool batteries Powerextra products are made with the highest quality materials