Inogen G4 single battery:
The Inogen One G4 portable oxygen concentrator comes with a ‘single‘ battery. We’ll explain what this means below. If you’re looking to replace your existing battery, or would like have a second battery, this one fits the Inogen G4. It is a lithium-ion battery and has an estimated duration of up to 2.7 hours (depending on flow setting).
You may want to consider the Inogen G4 External Battery Charger. This will allow you to charge a second battery (or more) while you’re using the device.
Single vs. Double Battery
Your portable oxygen concentrator runs on 12 volts of direct current (DC). To make the 12 volts a battery is used that contains eight 1.5 volt cells (8 x 1.5 volts = 12 volts). This 8-cell battery is referred to as a single battery. Virtually all portable oxygen concentrators use the terms single and double when talking about their batteries. A ‘single’ battery means that it contains eight cells (8-cell). A ‘double battery’ means that it contains sixteen cells (16-cell), but it’s run in parallel. So, the sixteen cell configuration allows for double the battery material and double the battery life. This makes the double battery a bit heavier.
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