Prime Day is June 23 to 26, and Lifehacker is sharing the best sales based on product reviews, comparisons, and price-tracking tools before it's over. 

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• New to Prime Day? We have a primer on everything you need to know. Sales are accurate at the time of publication, but prices and inventory are always subject to change.

If you're facing down a summer filled with outdoor chores, a set of cordless tools could make the job quicker, easier, and a lot quieter. It used to be that cordless tool batteries couldn’t keep up with the intensity required of landscaping equipment.

But high-output batteries have come a long way in the last few years, and there are now tools that will get the job done in most any yard. Electric tools can save you some money on fuel, too. EGO makes some of the best high-capacity batteries for larger cordless tools, and a handful of their best outdoor tools are discounted for Prime Day.

This EGO 21-inch electric mower is a steal at 40% off

Lawnmowers used to be one of those tools beyond the reasonable reach of cordless batteries because they need so much sustained torque to operate effectively. But the EGO 21-inch 56-volt self-propelled cordless mower can run for over an hour without needing a recharge. It’s on sale for $399, 40% off its usual price, and it comes with two 56-volt, 4-amp-hour batteries and a charger. You can expect to mow about a half-acre of grass with this mower without stopping to recharge.

The best Prime Day deals on EGO electric blowers and trimmers

• The EGO cordless electric 56-volt 530 CFM leaf blower is on sale for $139, 30% off its regular price. It comes with a 56-volt, 2.5-amp-hour battery and a charger. This tool has a 45-minute run time, so it’s a good fit for small to medium yard cleanup jobs.

• The EGO cordless electric 56-volt, 650 CFM leaf blower is on sale for $199, 35% off its usual price. This tool comes with a  56-volt, 5-amp-hour battery and a charger. With a 90-minute run-time, it can tackle even larger cleanup chores—that should be enough juice to clear about a half acre oworth of dry leaves or about 300 square feet filled with wet or heavily accumulated debris.

• The EGO 56-volt, 16-inch cordless electric string trimmer is on sale for $157.82, 34% off its typical price. It comes with a 56-volt, 2.5-amp-hour battery and a charger. This tool has about a 45-minute runtime, allowing you to clear between 1,500 and 5,000 linear feet of weeds on one charge, depending on the density of the vegetation.

• The EGO 56-volt 15-inch cordless electric string trimmer and 670 CFM leaf blower combo is on sale for $299, 27% off its regular price. This combo comes with a 4-amp-hour battery and a charger. You’ll be able to run one of your tools for about 80 minutes with this battery set. This is a good tool set for a small- to medium-sized yard.

The best Prime Day deals on EGO inverters and portable power stations

An inverter or power station can be used to turn your cordless tool batteries into charging stations for your devices or emergency equipment. Since EGO batteries are higher capacity, they are a good choice for an emergency kit or a camping set.

• The 180-watt Ego power inverter is on sale for $64.60, 44% off its typical price. This is a tool-only deal, so you’ll need a 56-volt Ego battery and charger to use it. The power station has an Edison outlet, USB-A and USB-C charging ports, and a built-in light source for power outages. When used in conjunction with a 56-volt, 4-amp-hour battery, you could use this to charge a cell phone 27 times.

• The 400-watt Ego power inverter and portable generator is on sale for $218.78, 34% off its regular price. It comes with a 50-volt, 4-amp-hour battery and a charger. This portable power station could be used to charge small devices like tables and smart phones, run your wi-fi router and modem for up to 7 hours, or a CPAP machine for 4-5 hours. This is a good backup for an emergency kit because of its long battery life and high output.

Looking for something else? Retailers like Walmart and Best Buy run Prime Day-style sales that are especially useful if you don’t have Amazon Prime.

• Walmart’s Prime Day competition sale runs from June 22-28 and includes deals up to 50% off. It’s an especially good option if you have Walmart+. 

• Best Buy’s Prime Day competition sale runs from June 22-28, and has some of the best tech sales online. It’s an especially good option if you’re a My Best Buy “Plus” or “Total” member.

• Target’s Prime Day competition sale runs from June 23-26, with deals up to 50% off. You can become a Circle member for free.