Can I Leave My Inverter On All The Time? | Will It Cause Battery Drain?

Inverters play a crucial role in providing uninterrupted power supply in various applications, including solar power systems, RVs, and homes. Many people wonder whether it's safe and efficient to leave their inverters on continuously. 

In my posts, I delve into everything relating to power inverters and here I discuss the advantages and disadvantages of leaving your inverter on all the time. I will also address frequently asked questions to provide you with a comprehensive understanding of this subject.

Key Takeaways

  • Leaving your inverter on all the time offers uninterrupted electricity supply and convenience.
  • Inverters consume a small amount of power when idle, which can result in energy wastage.
  • Battery drain is possible if the inverter draws power from batteries, but it can be mitigated by using appropriately sized and well-maintained batteries.
  • Power surges or fluctuations caused by inverters can potentially damage sensitive electronic devices, so using surge protectors is recommended.
  • Consider the type of inverter, its features, and the specific application before deciding whether to leave it on continuously.

Can I leave my inverter on all the time - Understanding Inverters and their Function

A power inverter is an electronic device that converts direct current (DC) power from a battery or solar panel into alternating current (AC) power used by most household appliances.

A hand touching an inverter

It allows you to power your devices and appliances when you're not connected to the grid, such as in off-grid or car camping situations. As more and more people venture into the world of RVing, it is smart to understand how your RV power system works, as well as how your RV inverter works and if you can leave your inverter on at all times.

Inverters come in various types, including standalone modified or pure sine wave inverters, grid-tie inverters, and hybrid inverters.

An inverter provides AC power from DC power sources and is useful in powering electronics and electrical equipment.

They are also used in the switched-mode electricity supply inverting stages.

There are a few ways you can recharge your batteries so you have a carefree adventure.

One approach involves incorporating solar inverters by installing solar panels on the roof of your rig. This arrangement ensures a consistent electricity supply to your batteries, and in many instances, the inverter can directly utilize the energy generated by the solar panels to power the RV.

If you are storing your RV, it is wise to turn off your RV inverter to save your battery power for when you need to use it next. You will still draw power when your inverter is not in use, but it's an insignificant amount. However, if you don't turn it off, the battery will continue to be used, which will, in turn, drain your batteries quickly.

It is obviously true when you are boon docking since the refrigerator would not get any power off the grid without the inverter being turned on.

However, since we switched from powering a RV mini-fridge to a residential unit many years ago, we leave our inverter on even when we are connected to shore power.

You should keep your inverter ON all the time. Otherwise, you will lose your battery backup time due to the self-discharge of batteries.

You will need to start the inverter manually every time when grid power fails.

Also, the power consumption of batteries during float charging is less than 1% of battery capacity.

Power is first wasted in the DC to AC conversion process as heat, and next, even when the inverter is not supplying the load and is just plugged in, it has to monitor the battery voltage with respect to a standard voltage and keep on charging the battery.

If the inverter is showing “charged”, should I switch it off?

It depends on the context and the type of inverter you are referring to.

If you are talking about a power inverter that converts DC electricity from a battery to AC electricity for use in a home or vehicle, then the answer is generally no, you should not switch it off just because it is showing "charged."

When the inverter is showing "charged," it means that the battery connected to it is fully charged.

If you turn off the inverter every night and turn it on every morning, it can quickly turn into a chore.

The bottom line: if you bought a solar inverter for your grid or off the grid PV system, there is no need to shut it off.

So, you generally would not want to leave it on when it isn't needed to supply power.

Troubleshooting of your inverter battery

If your inverter doesn't have a bypass switch then you need to follow the following steps.

Troubleshooting of an inverter from person with expertise

First: Switch off the inverter from the front side button, press and hold it until the inverter is switched off.

Second: Switch off the power socket, powering the inverter from the grid and then unplug the input power plug of the inverter from your home power socket.

Third: Now unplug the output plug of your home inverter and plug it into the home power socket and switch on it. In this way, you can switch off as well as bypass your home inverter having no bypass switch.

Do inverters drain batteries?

No, inverters don't drain batteries. However, batteries lose energy if the inverter input power is disconnected or they are isolated from the inverter.

Hence, batteries need to connect with the inverter, and the inverter input power needs to connect with the grid.


  • Uninterrupted Power Supply
  • Convenience
  • Battery Maintenance
  • Quick Power Availability


  • Energy Consumption
  • Battery Drain

Frequently Asked Questions

Can leaving the inverter on drain my batteries?

Leaving the inverter on can cause a small amount of battery drain over time. However, this drain is typically minimal and should not cause significant issues if your batteries are adequately sized and maintained.

Does the inverter consume power when idle?

Yes, inverters consume a small amount of power even when they are not actively supplying electricity. This power consumption is known as "standby power" or "phantom load."

Can leaving the inverter on damage electrical appliances?

No, in most cases, leaving the inverter on does not damage electrical appliances. However, power surges or fluctuations caused by the inverter could potentially harm sensitive devices. It's recommended to use surge protectors or voltage regulators to mitigate such risks.

Should I turn off the inverter during power outages?

If you have a hybrid inverter or a backup power system, you can leave the inverter on during power outages to maintain uninterrupted power supply. However, if your inverter is not designed for this purpose, it's advisable to turn it off to avoid unnecessary battery drain.

Can leaving the inverter on increase my electricity bill?

The power consumption of an idle inverter is relatively low, so it is unlikely to have a significant impact on your electricity bill. However, leaving multiple inverters or high-power inverters on continuously can contribute to a small increase in energy usage.

Final Words

Inverter which is ON

Leaving your inverter on all the time can provide uninterrupted power and convenience, but it's important to consider the potential drawbacks.

Evaluate the specific requirements of your power system, the type of inverter you have, and the potential energy consumption and battery drain before making a decision.

By understanding the advantages and disadvantages, you can make an informed choice that suits your needs while balancing energy efficiency and system longevity.

Leave a Comment