<p>For use with the PARI TREK S, this nebulizer battery gives you the freedom to cut the cord and receive your nebulizer treatments anywhere life takes you. The lithium ion battery has no memory so you can recharge it at any battery level without fear of losing the maximum charge capacity. The battery has up to 1 hour of battery life, allowing multiple treatments on one battery charge. The battery can be charged using either the wall or car adapter.</p>