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This Prime Day Lightning Deal on Neato’s D4 robot vacuum saves you 40%

Prime Day is already shaping up to be a banner year for sales on smart home products, and we’re already finding great deals on many robot vacuums.  However, the deal we uncovered for Neato’s D4 Robot Vacuum is time limited and only while supplies last, so act fast.

The sale on the D4 answers one of our biggest problems with the vacuum overall — its price. Not on sale, the D4 will set you back $530. And this is for a robot vac that is arguably a bit light on functionality for its price. While Amazon recently offered the D4 for $399 on sale, the Lightning Deal cuts another 20% off, making it just $319 — which we think is a much fairer price.

Lightning Deals are short six-hour sales, and also are offered in limited quantities. This sale runs from 3:35 p.m. to 9:35 p.m. PT, so if you’ve reached this after that time, unfortunately, you’ll be stuck paying the $399, which, to be honest, isn’t bad, but paying $80 less is better. Other Neato robot vacuums are on sale, but in our opinion, this is the best option we’ve seen out of what’s available.

So what’s so great about the D4? Neato points to a few features which make it stand out. An impressive 75-minute cleaning time will allow you to clean several rooms on a single charge, and if for some reason it doesn’t have enough charge to complete a room, the D4 will automatically return to its charger and charge itself just enough to complete its cleaning cycle.

The D4 makes precise maps of your room using lasers and can clean pretty effectively thanks to its “D” shape, which allows it to get into corners better. While it lacks multi-room cleaning functionality, the D4 still does a solid job of cleaning — and a bargain with the Lightning Deal discount.

If you’re looking for other Prime Day smart home deals, we have a roundup that we are continuously updating right here. For a broader view of all Prime Day deals, be sure to check out our Prime Day 2019 page for up-to-the-minute news on the best sales as we find them.

Editors' Recommendations

This flash deal gets you a Roomba robot vacuum for just $180
iRobot Roomba 694 at Best Buy - WiFi connected robot vacuum

iRobot Roombas are the reigning kings of robot vacuum deals. What Band-Aid is to adhesive bandages, or Kleenex to facial tissues, Roomba is to the robot vacuum. Right now you can grab one of the cheaper models at a sweet discount. The Roomba 694 is down to only $180 at Crutchfield after a $95 discount. We don't know how long it will stick around, so grab it before it's gone.

Why you should buy the iRobot Roomba 694
iRobot's Roomba is one of the more expensive brands, but it's behind some of the best and most well-reviewed robot vacuums in the market such as the iRobot Roomba s9+, according to our guide on how to choose a robot vacuum. The iRobot Roomba 694 is a more affordable version, but you can expect the same topnotch quality that has made the brand a household name. The robot vacuum features a three-stage cleaning system that lets it pick up all kinds of dirt and debris from various surfaces, and once it's done or its battery gets low after up to 90 minutes of cleaning, it automatically returns to its base to recharge.

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This 96-pack Energizer AA and AAA battery bundle deal saves you $38
A 96-pack Energizer battery bundle featuring AA and AAA batteries.

Buying batteries -- not the sexiest purchase in the world. But we all need them and never seem to have them. Here's the fix: buy a bunch of them all at once. Right now you can buy a pack of 48 AAA batteries for just $52. That's a $38 discount off their usual price of $90. Do yourself a favor and grab the pack while its on sale, then forget about buying batteries for a few more years.

This 96-pack bundle deal includes 48 Energizer MAX AA batteries and 48 AAA batteries. Energizer MAX batteries are the brand's longest-lasting yet, and have some other nice features as well. For starters, these alkaline batteries are designed to last up to 10 years in storage, ensuring that you always have reliable power on hand. Plus, they are leak-resistant and designed to protect your devices from damage. Energizer even guarantees them against leakage.

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This deal saves you $350 on the unlocked Samsung Galaxy Z Fold 4
The Galaxy Z Fold 4 open in a person's hands.

The Samsung Galaxy Z Fold 4, the brand's flagship foldable smartphone, doesn't usually appear in phone deals. However, an unlocked version of the device is currently available from Best Buy for $1,450, following a $350 discount on its original price of $1,800. If you've been waiting for an opportunity to buy the Samsung Galaxy Z Fold 4 at a lower price, this is it.

Why you should buy the Samsung Galaxy Z Fold 4
The Samsung Galaxy Z Fold 4 appears like a traditional smartphone with a 6.2-inch Dynamic AMOLED screen with 2316 x 904 resolution and a 120Hz refresh rate. However, you can open it up to reveal a 7.6-inch Dynamic AMOLED screen with 2176 x 1812 resolution and also a 120Hz refresh rate. The inside screen is perfect for watching streaming content, playing games, and editing photos, among other functions, and the crease in the middle is no longer visible due to the reduced rippling surrounding it. For an additional input option that you can use with the larger inner display, the smartphone also comes with Samsung's S Pen, which you can use to take down notes, make sketches, and more.

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