Cells:4 Li-ionVoltage:14.4 VCapacity:2200 mAhHP OA04 Battery DetailsHigh-quality Techie Compatible HP OA04 Battery for HP OA03, OA04, CQ14, CQ15 laptops.If your current battery is not working or it is dead due to a charging issue, backup issue, or any other issues, no worry replace it with the Techie Compatible HP OA04 Battery.Techie replacement batteries lead the industry in quality and reliability. Rest assured you’re getting the best part money can buy.0-Cycle – Each cell is brand new and has never been used.High Quality Cells – We use the most efficient capacity cells.Rigorous Testing – Every single battery cell is tested to ensure it meets our specification.