PetraTools HD4000
A 4-gallon sprayer with battery and charger that runs all day on a charge, for homeowners and small crews spraying large lawns or acreage.
Amazon $199.99$199.99
The PetraTools HD4000 is the better battery backpack sprayer overall, rated 3.9 to 3.6. The PetraTools HD4000 leads on runtime or airflow, features and spray power. The Greenworks 24V 4 Gallon wins on value. The Greenworks 24V 4 Gallon costs $50.10 less ($149.89 vs $199.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Greenworks 24V 4 Gallon
A low-cost 4-gallon kit for homeowners already on the Greenworks 24V battery.
Amazon $149.89$149.89
Which should you buy?
- Choose the PetraTools HD4000 for runtime or airflow (50 tanks per charge (200 gal) vs 15 tanks per charge (60 gal)), features (battery and charger included, adjustable pressure, 4 or more nozzles, gauge or control panel vs battery and charger included, 4 or more nozzles) and spray power (up to 90 PSI vs up to 70 PSI).
- Choose the Greenworks 24V 4 Gallon for value ($37.47 per gallon of tank ($149.89, 4 gal) vs $50 per gallon of tank ($199.99, 4 gal)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 4 gallons and up battery backpack sprayer; a clear win is highlighted. How we rank explains each one.
| Factor weight | PetraTools HD4000 | Greenworks 24V 4 Gallon |
|---|---|---|
| Overall rating | 3.9/5 | 3.6/5 |
| Value 25% | 56 $50 per gallon of tank ($199.99, 4 gal) | 74 $37.47 per gallon of tank ($149.89, 4 gal) |
| Tank size 10% | 67 4 gal tank | 67 4 gal tank |
| Spray power 20% | 79 up to 90 PSI | 61 up to 70 PSI |
| Runtime or airflow 20% | 100 50 tanks per charge (200 gal) | 48 15 tanks per charge (60 gal) |
| Features 15% | 75 battery and charger included, adjustable pressure, 4 or more nozzles, gauge or control panel | 45 battery and charger included, 4 or more nozzles |
| Warranty 10% | 0 warranty not published, scored as none | 50 3-year warranty |
Specifications
| PetraTools HD4000 | Greenworks 24V 4 Gallon | |
|---|---|---|
| Spraying | ||
| Tank | 4 gal | 4 gal |
| Max pressure | 90 PSI | 70 PSI |
| Nozzles included | 6 | 5 |
| Wand length | 34.5 in | - |
| Power | ||
| Battery | 12 V 8 Ah, included | 24 V 2 Ah, included |
| Runtime per charge | 6 hours | - |
| Gallons per charge | 200 gal | 60 gal |
| Tanks per charge | 50 | 15 |
| Features | ||
| Adjustable pressure | Yes | - |
| Agitator | No | No |
| Gauge or control panel | Yes | No |
| Build | ||
| Warranty | - | 3 years |