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How long does a deep cycle battery power an inverter? 

 September 19, 2021

By  Phil Borges

In order to understand how a deep cycle battery can power an inverter, you first need to know the basics of what each piece does. An inverter is a device that converts direct current (DC) electricity from solar panels or wind turbines into alternating current (AC) electricity for use in your home. A deep cycle battery stores the energy it receives and releases it as needed so that it doesn't have to be constantly recharged like other types of batteries.

The easiest way to connect these two pieces is with an "inverter/charger" device that combines both functions in one box and plugs directly into the wall socket. If you don't want this option, then there are three ways you could connect them:

  • Directly connect the battery and inverter.
  • Use a charge controller to control when the battery recharges.
  • Make your own charge controller using a timer.

Direct connection - You can wire your deep cycle battery directly to an inverter which is usually placed outside (or in a well-ventilated area if inside). The advantage of this method is simplicity and the fact that it does not require a charge controller. However, suppose you are planning on using an inverter/charger. In that case, it may be better to do it in two steps (connecting the battery directly to the inverter first and then connecting that to the charger) so that you can recharge faster.

Charge Controller - A charge controller is a device that keeps the voltage and current levels of your deep cycle battery within safe limits. It connects to the solar panels or wind turbine directly and controls when the battery begins to recharge (either automatically or under manual control). Inverters must be used with a charge controller because they typically use more power than what can be provided by the solar panels or wind turbines.

Inverter/charger - The third option is to use an inverter/charger, which combines both functions in a single box that plugs directly into the wall socket. This method also requires a charge controller because it does not have one built-in.

Using any of these three methods will allow you to run your deep cycle battery continuously for 10 or more hours. When using a charge controller, it is important to monitor the voltage and current levels, which will indicate how much energy is being used at any given time. If you see that they are either too high or too low, then something needs to be adjusted (i.e., the charge controller needs to be reset).

How to use a deep cycle battery to power an inverter

A deep-cycle battery is a type of lead-acid battery that can be used to power electrical devices. Lead-acid batteries have an advantage over other types of batteries because they can provide a steady and stable source of current for longer periods of time.

However, lead-acid batteries need to be charged appropriately to function effectively. For a 24-volt system, you would want to have a 12-volt battery that is rated at 20 amperes or more. This battery would provide enough current for the inverter, and it should last for longer than ten hours of continuous use before needing to be recharged again.

A device called an inverter is used to convert the DC power from a battery into AC power. This means that you can plug household appliances into an inverter and run them just like you would with a wall outlet. An inverter normally uses 1.5 amps for every kilowatt of electricity it needs to produce. For example, if you have an inverter that needs 10 kilowatts of power to produce AC current for a specific device, then the inverter will use about 15 amps.

As mentioned above, a deep cycle battery can supply this type of steady and stable current than other types of batteries. However, using a deep cycle battery is not recommended to power an inverter for more than 10 hours per week.

The reason why is that deep cycle batteries are designed to be discharged slowly over time, not quickly all at once. In addition, deep cycle batteries can become unstable under the influence of charging and discharging currents at the same time. That is why you need to pay attention to the voltage of a deep cycle battery. The battery should be charged using a charger that is rated for the battery's output voltage; otherwise, you might damage it.

What are the things you need to consider before buying a deep cycle battery?

A deep cycle battery is most often used to power an inverter for around ten hours before it needs to be recharged. Most batteries that are sold as deep cycle batteries are not true deep cycle batteries. They do not have the capacity for long-term charge storage, so we recommend not using them for this purpose.

You need to know what the requirements are for the battery before you purchase one. You also want to consider the voltage of the system and how much current it requires. If you want a battery backup in case of outages, a 12-volt battery will work fine. If you're going to use significant power with an inverter, then you'll need a 24-volt or higher rated battery.

Conclusion

The decision to buy a deep-cycle battery is not always an easy one. The information provided here should help you make the best choice for your specific needs and preferences. As you weigh all of these factors, remember that there are many options available on the market today, so don't be afraid to do some research before making any decisions about which battery will work for you. You can also contact a team of experts if you need assistance deciding what type of inverter or deep cycle battery package will work best with your budget and power requirements.

About the author

Hi, I'm Phil Borges.. thanks for reading.. My wife says I can't shut up about batteries so to save my marriage I've started this blog .. where I'd be ranting about batteries! Please leave a comment if you have any questions, I'm happy to help!

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