Aircraft owners often ask us for guidance in choosing a GPU. It's easy to check your battery to see if it is 12 or 24 volts. We offer 24 / 28V units perfect for most certified aircraft, as well as 12 / 14V GPUs often used for experimental and amateur-built airframes. Beyond the 14 or 28 volts question, you must consider how you plan to use your GPU, and the specs of your individual aircraft. Use two or three of the following strategies to zero in on the GPU that best fits your needs.

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