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I'm going to be doing some camping out of my Kia, and want to make sure I will not run the battery down if I power various gadgets over night via the power adapter ports.

Specifically, I need to run a CPAP machine for sleep apnea, and I have the DC converter for the device. It draws 6 A @ 12 VDC, or 72 Watts.

Just need to know the Amp-hour rating for the base Soul, and/or any warnings against running such a device off the car. Thanks!

Pᴀᴜʟsᴛᴇʀ2
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OrangeWombat
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2 Answers2

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One way round your problem would be too have a second battery, together with diode pack and wiring to charge it independantly. If your intention is too camp out in remote areas, you really dont want to saddle the vehicles system with any loads. Alternatively a generator for your machine. A continuous 6amp load overnight is quite a high demand on a regular battery.

Allan Osborne
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It really depends on the battery, not the car. The car will have a very small drain for the radio presets and fob receiver, but not much. A typical Lead-Acid battery has around a 100 minute reserve capacity. Reserve capacity being how long it takes a 25 amp discharge to lower the voltage to unusable levels. That's roughly 41 Ah.

Your 6A will lower it too much after one night. 6 Amps * 8 Hours = 48 Ah.

Nick
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