The rechargeable lithium battery backup is available as an option on Pride Lift Chairs, including the Infinity, Oasis and Heritage Power Recliner Collections. If you have your eye on one of our VivaLift!® Power Recliners, then you’re in luck! All VivaLift!® Power Recliners come standard with lithium battery backup to ensure your chair is fully operational at all times. If the power goes out while you are using your recliner, don’t worry. Lithium battery backup allows you to move from a full recline to a standing position easily. So, kick back and relax! You have no worries with Pride’s lithium battery backup.