Excellent quality batteries for HP OMNIBOOK Series. Irelandbattery.com specializes in laptop batteries. We store most all laptop batteries for all HP OMNIBOOK Series. Each of our HP OMNIBOOK Series laptop batteries uses Class A batteries which are certified to CE, FCC, ROHS, PSE, etc. Our products are safe and reliable, you can buy with confidence. The replacement battery part numbers and HP OMNIBOOK Series laptop models are listed as below.