Field King 190515 Professionals Battery Powered Backpack Sprayer, 4 gal

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Well designed and made. Comfortable to wear, easy to put on if lifted onto a table first. Spent a long time looking at reviews of various alternatives. Was a little unsure as this is a USA item incurring tax and import costs but still cheaper than nearest alternative. However, be aware designed for USA mains voltage so need to get a voltage adaptor for charger. Used twice for total of two hours without need of recharge. Bought to replace a hand pumped backpack after giving myself golfer's elbow weedkilling a two acre field. Very glad I did - so much easier and more comfortable

This is such a good product. I bought it in 2022 and in 2025 it still works perfectly. The battery lasts forever it seems without a charge and I’m so happy with this product that I am buying a second one. I use it for watering my gardens and then I also use it for spraying fruit trees. I find it easier to water the garden with this rather than carrying heavy water cans and walking up and down the rows because it’s just easier for me as an older lady to carry the weight on my back rather than carrying the weight of the water on my joints and wrist and shoulders, etc. 10/10 would recommend.

I've been using my sprayer for about 3 weeks now. Just yesterday and today I sprayed 6 acres of avocado orchard where weeds were growing between the rows and between trees. I pretty much worked non-stop each day for 6 hours and the battery never showed any signs of weakening. I do believe they are correct when they say it'll spray 50- gallons on one charge. It doesn't leak, it's very quiet and it's comfortable with it's wide straps and harness. Here's the thing: I am not spraying continuously, I'm spraying individual weeds but at times I'll spray for upwards of 5-6 seconds when I encounter a cluster of weeds. The sprayer kept-up just fine but after 4-5 seconds you will notice a reduction in pressure and it starts 'falling-off', after 8-10 seconds you're at half-power. Of course, this will vary depending which spray head you use. Now let me tell you about my awesome modification! Since you no longer have to pump the sprayer, I decided to convert mine into a dual-sprayer unit! I cut the hose about 6 inches coming out of the tank and then went to Home Depot and bought a plastic/nylon Tee fitting. I then got some fuel-injection clamps (not band clamps), these clamps are smooth and let you really cinch down on the hose. I took another hose and sprayer and now I have a sprayer in each hand! This proved to be incredibly more production and faster working through the orchard. You can also bring the sprayers together to double-saturate a weed as well. Did the sprayer keep-up with having TWO sprayers going? Yes, it did but if both sprayers were going for more then 5-6 seconds I did notice the pressure reduced and I wasn't get as much a mist/spray but instead more streaming. Still, double-sprayer is the way to go, I'm surprised they don't offer this already.

I have a large lawn, about 4000 square ft, and this saved me a ton of time and energy to spray with weed killer. Battery was good on a single charge to do it all, less refilling, and the most important - no hand pumping to pressurize the tank! When full, I suggest putting it on a table or counter and put on the backpack straps (adjust those before filling). Comfortable to carry around, hardly notice it is there once started.

So far, great. This unit is an improvement over the Petra 4-gallon sprayer that only gave me problems. I have used this unit to spray 8 tanks of herbicide so it’s new. What I find so well designed with this sprayer is that it shuts off the pump when the spraying stops. Another design that appeals to me is the built-in bottom stand that helps in stability when I have the unit on my zero turn mower between my legs. It doesn’t tip over. I also ordered and received the 4.2amp battery so now I can spray for a long time. I need the long spray time because I live on a large acreage.