Is your garden in dire need of some TLC, but you don't have the time to water it daily or apply any needed fertilizers or herbicides? Fear not, my friend, for I have just the solution! Introducing the battery-powered sprayer - an easy and convenient way to get your plants their much-needed H2O and nutrients.

With this nifty device, you can easily water your plants even when you're short on time. These sprayers are easy to use and perfect for gardeners who want to move around their plants easily. Plus, they're an excellent option for people who have trouble using traditional sprayers.


What is the PetraTools HD4000 Battery-Powered Backpack Sprayer?

A PetraTools HD4000 backpack sprayer seating on the lawn

This 4-gallon backpack sprayer is a versatile and easy-to-use product that can help you tackle various spraying tasks. This unit comes with a multipurpose wand that can provide a steady stream of liquid, and it also features a convenient handle and comfortable backpack straps for easy portability which makes it an efficient lawn and garden sprayer.

The HD4000 includes six adjustable nozzles to customize your spraying experience, and it also comes with a 12V 8AH sealed lead-acid battery, so you can get started immediately.

Whether you need to water your plants, apply fertilizer, or clean your deck, this 4-gallon backpack sprayer will make the job easier.


What is Included When Purchasing the HD4000 Battery-Powered Backpack Sprayer?

Parts included in the box of PetraTools HD4000

The HD4000 battery-powered backpack sprayer is a backpack-style unit that is designed for applying herbicides, insecticides, and fungicides. It has a 4-gallon capacity and features durable construction.

When you purchase this 4-Gallon backpack sprayer, you will receive the following items:

  • 1 HD4000 unit
  • 1 High-pressure spray hose
  • 1 HD pro wand with locking trigger
  • 1 Battery (already installed)
  • 1 Charger
  • 1 Set of Padded Shoulder Straps
  • 6 Nozzles
  • Accessories Bag
  • Manual and insert cards


How to Assemble the PetraTools HD4000 Battery-Powered Backpack Sprayer

A step by step way on how to assemble PetraTools HD4000 battery powered backpack sprayer

Assembling the HD4000 Battery Powered Sprayer is simple and easy to do. Just follow the instructions below, and you'll have it up and running in no time.

  • Connect the power cord to the charging port & ensure a full charge via the LED meter.
  • Once fully charged, fill the tank with the liquid of your choice.
  • Screw on the lid of the HD4000 unit.
  • Attach the nozzle.
  • Put on the straps.

Now your HD4000 battery-powered sprayer is ready to use! Flip the red switch or for a finer pressure adjustment, adjust the silver knob, and press the trigger to begin spraying.


How Can I Replace the Battery of the HD4000 Battery Powered Sprayer?

A man changing the battery of PetraTools HD4000 battery powered backpack sprayer

If your HD4000 Battery Powered Sprayer is not working as well as it should, it may be time to replace the battery. Here is a quick guide on how you can do this:

  • Unplug the battery charger from the sprayer.
  • Remove the old battery from the housing.
  • Install the new battery in the housing.
  • Plug in the battery charger and turn on the sprayer.
  • Test the sprayer to make sure it is working correctly.


How Can I Replace the Pump?

A man using tools in replacing the pump of PetraTools HD4000 battery powered backpack sprayer

The HD4000 battery-powered sprayer is a great choice for those who need a durable and reliable pump.

However, like all mechanical devices, the pump will eventually need to be replaced. Here are instructions on how to replace the pump of this 4-gallon backpack sprayer.

  • First, you will need to disconnect the battery from the sprayer.
  • Next, remove the four screws that are holding the pump in place.
  • Carefully lift the old pump out of the sprayer and set it aside.
  • Now, insert the new pump into the opening where the old one was located.
  • Ensure the new pump is seated properly, and replace the four screws.
  • Reconnect the battery and turn on the sprayer to test the new pump.

Replacing the pump on your 4-gallon lawn and garden sprayer is a relatively simple task that can be completed in just a few minutes. By following these instructions, you can ensure that your sprayer will continue to work properly for years to come.


How Long Should I Charge the HD4000 Battery-Powered Sprayer?

A man holding PetraTools HD4000 battery powered backpack Sprayer

As with any battery-powered sprayer, the HD4000 will achieve optimal performance when fully charged. Depending on your usage, we recommend topping off the battery of your HD4000 at least once a week. For best results, charge the HD4000 immediately after each use.

To charge the battery, plug the included charger into a standard outlet and connect it to the HD4000. The LED charging indicator will turn red, indicating that the battery is charging. Once the LED turns green, the battery is fully charged and ready for use.

If you notice that the HD4000 is not holding a charge as well as it used to, it may be time to replace the battery. Contact us for assistance in finding the right replacement battery for your HD4000.


How Can I Clean My Sprayer After Each Use?

A man pouring water to clean the PetraTools HD4000

It's essential to clean your lawn and garden sprayer after each use to prevent clogs and keep it working properly. Here's how:

  • Ensure your charging cord is unplugged, and unscrew the cap from the tank.
  • Pour half a tank of warm water into the sprayer and add a few tablespoons of dish soap.
  • Screw on both caps. Flip the red power switch to ON.
  • Press the trigger to run soapy water through the pump and hose.
  • Repeat steps 2-4 with clean water to rinse.
  • Dry the outside of the sprayer with a paper towel and store in a cool, dry place until the next use.


Why Choose the HD4000 Battery Powered Sprayer?

A man using PetraTools Backpack sprayer in spraying garden solution

Regarding battery-powered sprayers, the HD4000 is in a class of its own. This powerful unit is perfect for various spraying applications, from general cleaning and disinfecting to specific pest control. Here are just a few reasons why this 4-gallon backpack sprayer is the best choice for your needs:

  • The HD4000 uses high-quality batteries that provide longer run times and more power than other battery-operated sprayers on the market. This means you can complete your job faster with less downtime.
  • The pump on the 4-gallon backpack sprayer is designed for fast priming and operation. This makes it easy to use, even for those with limited experience.
  • The ergonomic design of the HD4000 makes it comfortable to use, even for extended periods.
  • The HD4000 comes with various nozzles and tips, so you can customize your spraying experience to suit your specific needs.
  • PetraTools offers customers a free 30-day return policy and a free registration to our Gold Club for a 90-day extended warranty, so you can be confident in its quality and performance.



If you're looking for a dependable battery-powered sprayer, this lawn and garden sprayer is a great option. The HD4000 from PetraTools is perfect for any homeowner or gardener. With its 12V battery, the HD4000 can be used anywhere without worrying about cords or plugged-in outlets.

And with its lightweight design, the HD4000 is easy to maneuver around your yard or garden. So if you're looking for a versatile and dependable battery-powered sprayer, the HD4000 is worth considering.