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HART 40V 6Ah Lithium-Ion Battery

  • Based on 152 reviews
Condition: New
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$199.99 Why this price?
Holiday Deal · 18% off was $244.99

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Availability: Only 3 left in stock, order soon!
Fulfilled by Golden Knight Trading Company

Arrives Sunday, Nov 23
Order within 5 hours and 9 minutes
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Features

  • Lithium Ion Battery

Description

Got a nice big yard? Then you’ll love the HART 40V 6.0Ah Lithium-Ion Battery. This high-capacity battery gets 3x more runtime than HART’s 40V 2.0 Ah battery, while delivering the same fade-free power and performance. That means you’ll be able to tackle any outdoor lawn & garden project that comes your way. We packed all that power into a slim battery design for a more comfortable experience. It also features an onboard fuel gauge that displays the remaining runtime. What’s more, this 6.0Ah battery is compatible with all HART 40V outdoor tools and 40V chargers. Throw in a limited 3-year warranty and you can see why there’s never been a better time to go cordless. Get ALL POWER, NO GAS with the HART 6.0Ah Battery. This product is sold as a single battery and does not include a charger. 6.0Ah battery compatible with all HART 40V outdoor tools & 40V chargers Charger sold separately Fade-free lithium-ion power Onboard fuel gauge displays remaining runtime Limited 3-year warranty

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


Brand: Hart


Battery Cell Composition: Lithium Ion


Battery Capacity: 6 Amp Hours


Unit Count: 1.0 Count


Product Dimensions: 8 x 6 x 4 inches


Item Weight: 4.02 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: Sunday, Nov 23

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.

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Top Amazon Reviews


  • 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

  • Battery
Good price.
Reviewed in the United States on July 26, 2025 by Christine Thatcher

  • 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

  • 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

  • Hart batteries are garbage
Battery went bad in less than 6 months. Hart customer service is terrible I won’t buy anymore Hart electric tools period.
Reviewed in the United States on July 10, 2025 by Wild-Bill Jenkins

  • Last
Great and last a good while.
Reviewed in the United States on April 25, 2024 by BrentMcG

  • 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

  • Great Product
Great product! Cheapest spot to get spare battery for Hart lawnmower
Reviewed in the United States on July 29, 2024 by David S.

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