One DC Mobile Adapter Model XPO140 is supplied with XPO100B Invacare XPO2 Oxygen Concentrator and plugs into a 12-volt DC power source, with a 15- or 20-ampere circuit, such as a car or boat accessory lighter. It operates the XPO2 while recharging its internal battery. Many users find it handy to have more than one DC Mobile Adapter, keeping one in each vehicle, for example.

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