HP made their new Enviro environmental-friendly lithium-ion notebook batteries available for sale today and you can pick one up for $150 each. HP says they last longer than typical notebook batteries and even throws in a 3 year warranty into the mix. The Enviro series battery is currently only available as a 6-cell unit for the latest HP Compaq (ie CQ40, CQ50), some HP Pavilion (ie dv4, dv5) and HP HDX notebook PCs. I’m surely looking forward to the day when such batteries are available for the HP Mini and HP Elitebook/Business notebook series…