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How long will my battery last with my power inverter

Hello,
We have a lot of customers ask how long a battery will last with a power inverter. See this quick video for tips.

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This entry was posted on Monday, March 30th, 2009 at 7:36 pm and is filed under Battery run time. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

3 Responses to “How long will my battery last with my power inverter”

  1. Mari says:
    March 30, 2009 at 8:57 pm

    How do I find the amp hour rating of my battery?

  2. Laura says:
    March 30, 2009 at 9:02 pm

    Hi Mari,
    Most deep cycle ba tteries in the 55-69lb range that are 12 volts are usually rated in 24, 27 or 31 group sizes. If you own one of these batteries use the following chart:

    Group 24 – 80 amps
    Group 27 – 100 amps
    Group 31 – 105 amps

    Sometimes it is displayed on your battery. If you are using a standard car battery, it is typically 40-60 amps depending on the battery. Again, these are just approximates. Each battery on the market is different. The bigger the load on your battery, the faster the rate of discharge.

  3. Frank Rod says:
    August 18, 2009 at 6:56 pm

    Question?
    I am going to use three batteries in series, which will be hooked up to my inverter.

    My inverter is 800W my Battery amps are 65+65=75

    How long would my battery run time be? Please reply with the formula.

    Thanks!

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