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Hart

HART 40V 6.0Ah Lithium Ion Battery, For 40V Outdoor Power Tools, Fuel Gauge, 3 Year Warranty, Charger Sold Separately

  • Based on 152 reviews
Condition: New
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Save $16.00 was $197.00

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Availability: Only 2 left in stock, order soon!
Fulfilled by Golden Knight Trading Company
Arrives Thursday, Apr 2
Order within 11 hours and 30 minutes
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Features

  • Power your entire HART 40V outdoor power tool system with this single, high-capacity 6.0Ah battery.
  • Experience up to three times more runtime compared to the HART 40V 2.0Ah battery model.
  • Features an onboard fuel gauge to clearly display the remaining runtime for project planning.
  • Delivers consistent, fade-free power throughout the entire discharge cycle for dependable performance.
  • Comes with a limited 3-year warranty for added peace of mind.

Description

Power your entire HART 40V outdoor system with this 6.0Ah lithium-ion battery. It provides three times more runtime than the standard 2.0Ah battery for extended lawn and garden work. The slim design fits all HART 40V tools and chargers. Monitor the charge level with the integrated fuel gauge. Technical Specifications:40V, 6.0Ah Lithium-Ion BatteryCompatible with all HART 40V outdoor tools and chargersCharger is sold separatelyIncludes a limited 3-year warranty 1: What is the capacity of this HART battery? - This is a 40V, 6Ah 6.0Ah) lithium-ion battery. 2: Is a charger included with this battery purchase? - No, this product is sold as a single battery only. A compatible 40V charger is sold separately. 3: What tools is this 40V battery compatible with? - This 6Ah battery is compatible with all HART 40V outdoor power tools. 4: How much more runtime does this battery provide? - It provides approximately three times more runtime compared to the HART 40V 2.0Ah battery. 5: Does this battery have a warranty? - Yes, it comes with a limited 3-year warranty. 6: How can I check the battery's current charge level? - The battery features an onboard fuel gauge that displays the remaining runtime. 7: Does this battery lose power as the charge depletes? - No, it is designed to deliver fade-free power and consistent performance until it needs recharging. 8: Is the battery design easy to handle? - Yes, it has a slim battery design intended for a more comfortable user experience.

Number of Batteries: 1 Lithium Ion batteries required. (included)


Brand: Hart


Battery Cell Composition: Lithium Ion


Battery Capacity: 6 Amp Hours


Recommended Uses For Product: Power Tool


Product Dimensions: 8 x 6 x 4 inches


Item Weight: 4.03 pounds


Item model number: 40V-6Ah


Batteries: 1 Lithium Ion batteries required. (included)


Is Discontinued By Manufacturer: No


Date First Available: February 3, 2022


Manufacturer: TTI


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Apr 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Works well!!
Very happy with the battery!!!!
Reviewed in the United States on November 11, 2025 by karen Powers
    • Quality
Love this replacement battery for my Hart lawn mower. I have a 4 that doesn't last long enough to do my whole yard,got this and it has plenty of life left over doing my whole yard. I don't even use the 4 amp anymore. You won't be disappointed. It's worth th money.
Reviewed in the United States on January 11, 2024 by dorothy
    • Whew 😥- it holds up
No problems with this battery- it has held up and still charging- soooooo glad
Reviewed in the United States on July 25, 2025 by mirror
    • Battery
Good price.
Reviewed in the United States on July 26, 2025 by Christine Thatcher
    • Hart Battery
This battery quit charging on September 2, 2023, and I contacted the Hart company for support and warranty service. The battery was only 3 months old. Here it is October 13, 2023, and I'm still waiting for help. Worst company to deal with. I have had 5 different customer service personal contact me and they wanted to have the same questions answered. One hand doesn't know what the other hand is doing. Finally received a replacement battery on October 17, 2023. I do regret purchasing anything from this company. ... show more
Reviewed in the United States on October 13, 2023 by Sharlene
    • As advertised
I received the used battery as promised and it has come in handy with my new battery operated lawn mower. I have two batteries and my mowing time has doubled.
Reviewed in the United States on October 13, 2024 by bgillette
    • You can't get your money back.
My battery arrived in a box, but the battery container inside looked like it had been dropped several stories to the concrete below. It would not charge and demonstrated a fault. I applied to return it, followed instructions, and shipped it. Six months later, my account shows the approval for a return, but nothing else. No money. The online help is circular and keeps you going around from menu to menu and back again. There are no phone numbers, email addresses, or forms to post a direct complaint. ... show more
Reviewed in the United States on December 2, 2024 by Elwin N. McKellar
    • Just like the original
I brought this because my lawn is a little to big for one charge that the battery came with a mower. Perfect!!! I am very happy with this battery!!! Had to charge it when it first came but it lasted just like the original! Identical!! Get purchase!! If you need a backup battery for your electric mower, this will not disappoint! ... show more
Reviewed in the United States on April 7, 2023 by missann123

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