Solo 417-Li
#11 in 4 gallons and upFull review
A lithium 4.5-gallon sprayer from a long-time sprayer maker, for homeowners who want a long runtime without fuss.
Amazon $249.93$249.93
The Solo 417-Li is the better battery backpack sprayer overall, rated 3.1 to 2.6. The Solo 417-Li leads on value, runtime or airflow and tank size. The Solo 442 18V wins on features. The Solo 417-Li costs $203.05 less ($249.93 vs $452.98).
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.
Solo 442 18V
#16 in 4 gallons and upFull review
A commercial-style 18 V sprayer with set pressure steps and a gauge, for applicators who need repeatable rates more than a low price.
Amazon $452.98$452.98
Which should you buy?
- Choose the Solo 417-Li for value ($55.54 per gallon of tank ($249.93, 4.5 gal) vs $113.25 per gallon of tank ($452.98, 4 gal)), runtime or airflow (3.7 hours per charge vs 2.5 hours per charge) and tank size (4.5 gal tank vs 4 gal tank).
- Choose the Solo 442 18V for features (battery and charger included, adjustable pressure, gauge or control panel vs battery and charger included, adjustable pressure).
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 | Solo 417-Li | Solo 442 18V |
|---|---|---|
| Overall rating | 3.1/5 | 2.6/5 |
| Value 25% | 49 $55.54 per gallon of tank ($249.93, 4.5 gal) | 4 $113.25 per gallon of tank ($452.98, 4 gal) |
| Tank size 10% | 83 4.5 gal tank | 67 4 gal tank |
| Spray power 20% | 52 up to 62 PSI | 50 up to 60 PSI |
| Runtime or airflow 20% | 39 3.7 hours per charge | 21 2.5 hours per charge |
| Features 15% | 50 battery and charger included, adjustable pressure | 60 battery and charger included, adjustable pressure, gauge or control panel |
| Warranty 10% | 0 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Solo 417-Li | Solo 442 18V | |
|---|---|---|
| Spraying | ||
| Tank | 4.5 gal | 4 gal |
| Max pressure | 62 PSI | 60 PSI |
| Wand length | 28 in | 20 in |
| Hose length | 55 in | 48 in |
| Power | ||
| Battery | 11 V 7.8 Ah, included | 18 V, included |
| Runtime per charge | 3.7 hours | 2.5 hours |
| Features | ||
| Adjustable pressure | Yes | Yes |
| Metal wand | No | No |
| Agitator | No | No |
| Gauge or control panel | No | Yes |
| Build | ||
| Warranty | 1 year | - |