The Zen-O universal external battery charger is a single-bay charger that gives you the ability to recharge batteries without plugging your concentrator into the AC or DC power supplies. Because this is the universal version, you will be equipped with the plugs that work in the US, EU, and the UK. By using the universal external battery charger, it gives you the ability to accomplish more throughout your day without worrying about taking unnecessary breaks or postponing plans to allow your batteries to recharge. In comparison to the Zen-O AC and DC power supplies, the external charger does not need to operate your concentrator at the same time, making a huge difference in how fast your battery will recharge.

The universal external battery charger doesn't just allow you to recharge your battery faster, it allows you to run errands, explore while on vacation, or spend the day at the beach while your battery recharges. The charger is also equipped with battery calibration technology to prolong the life of your battery and reset the lithium-ion cells to extend each battery's overall lifespan. An LED indication system notifies you of charging status and calibration status.