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 $199.99The PetraTools HD4000 rates 3.9 among 4 gallons and up battery backpack sprayers; the PetraTools HD3000 rates 3.3 among under 4 gallons ones. The PetraTools HD3000 costs $20 less ($179.99 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.

A smaller, lighter PetraTools sprayer for yards where 4 gallons is more than you need.
Amazon $179.99Scores side by side
These two sit in different type classes (4 gallons and up and under 4 gallons), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | PetraTools HD4000 | PetraTools HD3000 |
|---|---|---|
| Overall rating | 3.9/5 | 3.3/5 |
| Value 25% | 56 $50 per gallon of tank ($199.99, 4 gal) | 44 $60 per gallon of tank ($179.99, 3 gal) |
| Tank size 10% | 67 4 gal tank | 33 3 gal tank |
| Spray power 20% | 79 up to 90 PSI | 79 up to 90 PSI |
| Runtime or airflow 20% | 100 50 tanks per charge (200 gal) | 52 16.7 tanks per charge (50 gal) |
| Features 15% | 75 battery and charger included, adjustable pressure, 4 or more nozzles, gauge or control panel | 65 battery and charger included, adjustable pressure, 4 or more nozzles |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| PetraTools HD4000 | PetraTools HD3000 | |
|---|---|---|
| Spraying | ||
| Tank | 4 gal | 3 gal |
| Max pressure | 90 PSI | 90 PSI |
| Nozzles included | 6 | 6 |
| Wand length | 34.5 in | - |
| Power | ||
| Battery | 12 V 8 Ah, included | 12 V 3.3 Ah, included |
| Runtime per charge | 6 hours | 2 hours |
| Gallons per charge | 200 gal | 50 gal |
| Tanks per charge | 50 | 16.7 |
| Features | ||
| Adjustable pressure | Yes | Yes |
| Agitator | No | No |
| Gauge or control panel | Yes | No |