Hero image 0 of HART 40 Volts 4.0Ah Lithium-Ion Battery, 0 of 7
RollbackOverall pick
HART 40 Volts 4.0Ah Lithium-Ion Battery
Key item features
- Compatibility: Works with all HART 40V tools
- Advanced Technology: Lithium-Ion battery offers more power and longer life with zero "memory" effect
- High Capacity: 4.0Ah battery provides better runtime and power for demanding tools like mowers, chainsaws, and blowers
- Convenient Design: Slim design reduces fatigue for a more comfortable experience
- On-Board Fuel Gauge: Allows quick charge checks at any moment
- Included Items: Comes with a 40V 4.0Ah Battery and Operator Manual
- Model Information: Model number HLBP021A
Generated by AI
Specs
- Battery capacity4 Ah
- Volts40 V
- CompatibilityHART Consumer Products
- Weight3.06 lb
Reviews summary
Pros
- : Can cover entire yard with one charge.
- : Lasts for an extended period on a single charge.
- : Provides lasting power for task completion.
Cons
- : Costs more than similar products or tools.
Generated by AI
Current price is USDNow $128.00
You save $30.00
was $158.00$158.00
You save$30.00
Price when purchased online
- Free shipping
Free 90-day returns
How do you want your item?
Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
Columbus, 43215
Arrives by Today
.Order within 9 hr 37 min
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
Similar items you might like
Based on what customers bought
Best seller HART 2-Pack 20 Volts 4.0Ah Lithium-Ion Batteries (Charger Not Included) $99.00
Best seller
2 optionsAvailable in additional 2 options$9900current price $99.00Options from $99.00 – $198.00HART 2-Pack 20 Volts 4.0Ah Lithium-Ion Batteries (Charger Not Included)
9294.7 out of 5 Stars. 929 reviewsSave with
Pickup todayDelivery todayShipping, arrives todayRollback HART 20-Volt Lithium-Ion 4.0Ah Battery (Charger Not Included) $67.16 Was $89.00
Rollback
Now$6716current price Now $67.16, Was $89.00$89.00HART 20-Volt Lithium-Ion 4.0Ah Battery (Charger Not Included)
10814.6 out of 5 Stars. 1081 reviewsSave withPickup todayDelivery todayShipping, arrives todayRollback HART 2-Pack 20-Volt 2.0Ah Lithium-Ion Batteries (Charger Not Included) $79.00 Was $94.00 $39.50/ea
Rollback
Now$7900current price Now $79.00, Was $94.00$94.00$39.50/eaHART 2-Pack 20-Volt 2.0Ah Lithium-Ion Batteries (Charger Not Included)
7444.3 out of 5 Stars. 744 reviewsSave withShipping, arrives todayHART 20 Volts 6.0Ah Lithium-Ion Battery (Charger Not Included) $99.00
2 optionsAvailable in additional 2 options$9900current price $99.00Options from $99.00 – $198.00HART 20 Volts 6.0Ah Lithium-Ion Battery (Charger Not Included)
1264.8 out of 5 Stars. 126 reviewsSave withPickup todayDelivery todayShipping, arrives todayHART 20V Lithium-Ion 4.0Ah Battery (Charger Not Included) $88.00
$8800current price $88.00HART 20V Lithium-Ion 4.0Ah Battery (Charger Not Included)
3404.7 out of 5 Stars. 340 reviewsSave withPickup todayDelivery todayShipping, arrives todayHART 20-Volt Lithium-Ion 2.0Ah Battery (Charger Not Included) $59.00
$5900current price $59.00HART 20-Volt Lithium-Ion 2.0Ah Battery (Charger Not Included)
3784.3 out of 5 Stars. 378 reviewsSave withPickup todayDelivery todayShipping, arrives todayStealthMounts - Black Battery Mounts for Hart 20v | Battery Holders | Package of 6 $16.88
2 optionsAvailable in additional 2 options$1688current price $16.88Options from $16.88 – $33.76StealthMounts - Black Battery Mounts for Hart 20v | Battery Holders | Package of 6
184.8 out of 5 Stars. 18 reviewsSave withPickup todayDelivery todayShipping, arrives todayGreenworks 60 Volt 2.5Ah Battery 1807202 $99.99 Was $168.00
Now$9999current price Now $99.99, Was $168.00$168.00Greenworks 60 Volt 2.5Ah Battery 1807202
1194.4 out of 5 Stars. 119 reviewsSave withShipping, arrives todayBest seller Hyper Tough 12V Max 4.0Ah Lithium-Ion Power Tool Battery Pack $29.97
Best seller
2 optionsAvailable in additional 2 options$2997current price $29.97Options from $29.97 – $59.94Hyper Tough 12V Max 4.0Ah Lithium-Ion Power Tool Battery Pack
1734.7 out of 5 Stars. 173 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Hyper Tough 20V Max 2.0Ah Lithium-Ion Battery Pack with USB-A and USB-C Ports $28.44
Best seller
$2844current price $28.44Hyper Tough 20V Max 2.0Ah Lithium-Ion Battery Pack with USB-A and USB-C Ports
3644.4 out of 5 Stars. 364 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Hyper Tough 12V Max 2.0Ah Lithium-Ion Rechargeable Battery $22.16
Best seller
2 optionsAvailable in additional 2 options$2216current price $22.16Options from $22.16 – $44.32Hyper Tough 12V Max 2.0Ah Lithium-Ion Rechargeable Battery
2154.7 out of 5 Stars. 215 reviewsSave withPickup todayDelivery todayShipping, arrives todayStealthMounts - Black Tool Mounts for Hart 20v Tools | Power Tool Holder | Package of 4 $16.88 $4.22/ea
$1688current price $16.88$4.22/eaStealthMounts - Black Tool Mounts for Hart 20v Tools | Power Tool Holder | Package of 4
85 out of 5 Stars. 8 reviewsSave withPickup todayDelivery todayShipping, arrives today
About this item
Product details
Expand your 40V collection with this powerful and compact 4.0Ah 40V HART Battery. This powerful battery features Lithium-Ion technology to give you long-lasting and fade-free power you need to tackle any project that comes your way. Also, the On-Board Fuel Gauge allows you to quickly check the charge at any moment. The 4.0Ah 40V HART Battery has a slim design that lends itself to a more comfortable experience by reducing fatigue. This 4.0Ah battery is compatible with all HART 40V outdoor tools. You will never run out of runtime while having this additional HART Battery on hand! Get ALL POWER, NO GAS with the HART 4.0Ah Battery. This battery is sold as a single battery and does not include a charger or a tool. Model: HLBP021A
- Works with all HART 40V tools
- More power and longer life with zero "memory" effect sets this Lithium-Ion battery apart from Ni-Cad competitors
- Higher capacity battery provides better runtime and power for more demanding tools like mowers, chainsaws, and blowers
- Model: HLBP021A
- Includes: 40V 4.0Ah Battery and Operator Manual
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Battery capacity
4 Ah
Volts
40 V
Compatibility
HART Consumer Products
Weight
3.06 lb
Warranty
Warranty information
Limited 3-Year Warranty
Warnings
Ingestion Hazard
This product contains a battery. Death or serious injury can occur if ingested. A swallowed battery can cause Internal Chemical Burn in as little as 2 hours. Keep new and used batteries OUT OF REACH OF CHILDREN. Seek Immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.govMore items to consider
Based on what customers bought
HART 2-Pack .080-inch Pre-Wound Cordless Trimmer Spools $15.88 $7.94/ea
$1588current price $15.88$7.94/eaHART 2-Pack .080-inch Pre-Wound Cordless Trimmer Spools
2204.4 out of 5 Stars. 220 reviewsSave withShipping, arrives todayHART 40-Volt Dual Port Fast Charger for HART 40V Batteries $98.00
$9800current price $98.00HART 40-Volt Dual Port Fast Charger for HART 40V Batteries
1984.1 out of 5 Stars. 198 reviewsSave withShipping, arrives todayHART 40V 300 Watt Battery Powered Power Source with LED Light and Carry Handle (Battery Not Included) $97.00
$9700current price $97.00HART 40V 300 Watt Battery Powered Power Source with LED Light and Carry Handle (Battery Not Included)
924.1 out of 5 Stars. 92 reviewsSave withHART 40V 2.5Ah Battery Accessory, Lithium-Ion, On-Board Fuel Gauge $98.00
$9800current price $98.00HART 40V 2.5Ah Battery Accessory, Lithium-Ion, On-Board Fuel Gauge
1163.9 out of 5 Stars. 116 reviewsSave withShipping, arrives in 3+ daysHART 40V Cordless Leaf Vacuum Kit, (1) 4.0Ah Lithium-Ion Battery $156.00
2 optionsAvailable in additional 2 options$15600current price $156.00More options from $117.00HART 40V Cordless Leaf Vacuum Kit, (1) 4.0Ah Lithium-Ion Battery
5883.8 out of 5 Stars. 588 reviewsSave withShipping, arrives todayRollback HART 40-Volt Cordless Attachment Capable 15-inch String Trimmer Kit, (1) 4.0Ah Lithium-Ion Battery $138.00 Was $159.99
Rollback
2 optionsAvailable in additional 2 optionsNow$13800current price Now $138.00, Was $159.99$159.99HART 40-Volt Cordless Attachment Capable 15-inch String Trimmer Kit, (1) 4.0Ah Lithium-Ion Battery
15784.4 out of 5 Stars. 1578 reviewsSave withPickup todayDelivery todayShipping, arrives todayRollback HART 40V Cordless Brushless 14 inch Chainsaw Kit (1) 4.0Ah Lithium-Ion Battery $158.00 Was $199.99
Rollback
2 optionsAvailable in additional 2 optionsNow$15800current price Now $158.00, Was $199.99$199.99HART 40V Cordless Brushless 14 inch Chainsaw Kit (1) 4.0Ah Lithium-Ion Battery
9574.5 out of 5 Stars. 957 reviewsSave withPickup todayDelivery todayShipping, arrives todayHART 40-Volt 6A Dual Port Rapid Charger $178.00
$17800current price $178.00HART 40-Volt 6A Dual Port Rapid Charger
284.8 out of 5 Stars. 28 reviewsSave withBest seller HART 20-Volt Lithium-Ion 4-Port Fast Battery Charger (Batteries Not Included) $54.88
Best seller
$5488current price $54.88HART 20-Volt Lithium-Ion 4-Port Fast Battery Charger (Batteries Not Included)
5604.7 out of 5 Stars. 560 reviewsSave withPickup todayDelivery todayShipping, arrives todayHART 40V 12" String Trimmer and Blower Combo Kit, Generation Two, (1) 4.0Ah Lithium-Ion Battery $148.00
$14800current price $148.00HART 40V 12" String Trimmer and Blower Combo Kit, Generation Two, (1) 4.0Ah Lithium-Ion Battery
10884 out of 5 Stars. 1088 reviewsSave withShipping, arrives todayRollback HART 40-Volt Cordless 20-inch Brushless Self Propelled Mower Kit, (1) 6.0 Ah Lithium-Ion Battery $378.00 Was $428.00
Rollback
2 optionsAvailable in additional 2 optionsNow$37800current price Now $378.00, Was $428.00$428.00HART 40-Volt Cordless 20-inch Brushless Self Propelled Mower Kit, (1) 6.0 Ah Lithium-Ion Battery
23944.2 out of 5 Stars. 2394 reviewsSave withShipping, arrives todayRollback HART 20-Volt Cordless 4 Tool Combo Kit $127.00 Was $158.00
Rollback
Now$12700current price Now $127.00, Was $158.00$158.00HART 20-Volt Cordless 4 Tool Combo Kit
3284.6 out of 5 Stars. 328 reviewsSave withPickup todayDelivery todayShipping, arrives todayHART PowerFit Hedge Attachment (for Attachment Capable Trimmer) $88.00
$8800current price $88.00HART PowerFit Hedge Attachment (for Attachment Capable Trimmer)
1534.5 out of 5 Stars. 153 reviewsSave withShipping, arrives tomorrowRollback HART 40-Volt 24-inch Cordless Hedge Trimmer Kit, (1) 2.5Ah Lithium-Ion Battery $128.00 Was $158.00
Rollback
2 optionsAvailable in additional 2 optionsNow$12800current price Now $128.00, Was $158.00$158.00HART 40-Volt 24-inch Cordless Hedge Trimmer Kit, (1) 2.5Ah Lithium-Ion Battery
3794.3 out of 5 Stars. 379 reviewsSave withPickup todayDelivery todayShipping, arrives todayHyper Tough 20V Lithium-Ion 2.0Ah Battery, HT21-401-003-10 $24.88
2 optionsAvailable in additional 2 options$2488current price $24.88Options from $24.88 – $49.76Hyper Tough 20V Lithium-Ion 2.0Ah Battery, HT21-401-003-10
3934.4 out of 5 Stars. 393 reviewsSave withHart 5 Pack .095" Precut Line for Bump Feed Trimmers $15.88
2 optionsAvailable in additional 2 options$1588current price $15.88Options from $15.88 – $31.76Hart 5 Pack .095" Precut Line for Bump Feed Trimmers
774.7 out of 5 Stars. 77 reviewsSave withShipping, arrives tomorrowHART 20-Volt Lithium-Ion 2.0Ah Battery (Charger Not Included) $64.00
$6400current price $64.00HART 20-Volt Lithium-Ion 2.0Ah Battery (Charger Not Included)
2563.8 out of 5 Stars. 256 reviewsSave withShipping, arrives in 2 daysHART 40-Volt Cordless 18-inch Push Mower Kit, (1) 6Ah Lithium-Ion Battery, (1) Battery Charger $247.00
$24700current price $247.00HART 40-Volt Cordless 18-inch Push Mower Kit, (1) 6Ah Lithium-Ion Battery, (1) Battery Charger
26094.1 out of 5 Stars. 2609 reviewsSave withShipping, arrives tomorrow
Popular items in this category
Best selling items that customers love
Rollback HART 20-Volt Cordless Rotary Tool, (1) 1.5Ah Lithium-Ion Battery $98.00
Rollback
2 optionsAvailable in additional 2 options$9800current price $98.00More options from $50.88HART 20-Volt Cordless Rotary Tool, (1) 1.5Ah Lithium-Ion Battery
3464.7 out of 5 Stars. 346 reviewsSave withShipping, arrives tomorrowHART 20-Volt Lithium-Ion 4-Port Fast Charger (2) 20-Volt 2ah Lithium Ion Batteries $133.88
$13388current price $133.88HART 20-Volt Lithium-Ion 4-Port Fast Charger (2) 20-Volt 2ah Lithium Ion Batteries
15 out of 5 Stars. 1 reviewsSave withShipping, arrives tomorrowHART 20V Project Kit $69.88
$6988current price $69.88HART 20V Project Kit
1214.5 out of 5 Stars. 121 reviewsSave withPickup todayDelivery todayShipping, arrives todayHART 20-Volt 3-Tool Combo Kit (2) 2.0Ah Lithium-Ion Batteries $198.00
$19800current price $198.00HART 20-Volt 3-Tool Combo Kit (2) 2.0Ah Lithium-Ion Batteries
1634.4 out of 5 Stars. 163 reviewsSave withShipping, arrives tomorrowHART 20-Volt Battery-Powered Detail Sander Kit, (1) 2.0Ah Lithium-Ion Battery $79.00
$7900current price $79.00HART 20-Volt Battery-Powered Detail Sander Kit, (1) 2.0Ah Lithium-Ion Battery
664.4 out of 5 Stars. 66 reviewsSave withShipping, arrives tomorrowRollback HART 20-Volt Cordless Multi-Tool Kit, (1) 1.5Ah Lithium-Ion Battery $103.00
Rollback
2 optionsAvailable in additional 2 options$10300current price $103.00More options from $53.94HART 20-Volt Cordless Multi-Tool Kit, (1) 1.5Ah Lithium-Ion Battery
7334.6 out of 5 Stars. 733 reviewsSave withShipping, arrives tomorrowHART 20V (2) 4Ah Battery and Charger Kit $175.00
$17500current price $175.00HART 20V (2) 4Ah Battery and Charger Kit
4854.6 out of 5 Stars. 485 reviewsSave withShipping, arrives tomorrowHART 20-Volt Cordless 1/4 Sheet Sander Kit, (1) 2.0Ah Lithium-Ion Battery $89.00
$8900current price $89.00HART 20-Volt Cordless 1/4 Sheet Sander Kit, (1) 2.0Ah Lithium-Ion Battery
514.7 out of 5 Stars. 51 reviewsSave withBest seller HART 20-Volt 3/8-inch Battery-Powered Ratchet Kit, (1) 1.5Ah Lithium-Ion Battery $83.97
Best seller
$8397current price $83.97HART 20-Volt 3/8-inch Battery-Powered Ratchet Kit, (1) 1.5Ah Lithium-Ion Battery
4194.5 out of 5 Stars. 419 reviewsSave withShipping, arrives todayHART 3-Tool 20-Volt Cordless Combo Kit with and 16-inch Storage Bag, (1) 20-Volt 1.5Ah (1) 20-Volt 4.0Ah Lithium-Ion Batteries $169.00
$16900current price $169.00HART 3-Tool 20-Volt Cordless Combo Kit with and 16-inch Storage Bag, (1) 20-Volt 1.5Ah (1) 20-Volt 4.0Ah Lithium-Ion Batteries
2734.6 out of 5 Stars. 273 reviewsSave withShipping, arrives in 2 daysHART 20-Volt Brushless Angle Grinder with 4Ah Battery and Charger Starter Kit Bundle $184.66
$18466current price $184.66HART 20-Volt Brushless Angle Grinder with 4Ah Battery and Charger Starter Kit Bundle
Save withShipping, arrives tomorrowHART 40V Brushless Auger (1) 4.0 Ah Lithium-Ion Battery $396.00
$39600current price $396.00HART 40V Brushless Auger (1) 4.0 Ah Lithium-Ion Battery
564.7 out of 5 Stars. 56 reviewsSave withShipping, arrives in 2 days
Customer ratings & reviews
How item rating is calculated
Reviews summary
Pros
- : Can cover entire yard with one charge.
- : Lasts for an extended period on a single charge.
- : Provides lasting power for task completion.
Cons
- : Costs more than similar products or tools.
Generated by AI
Customer images
+4 images
Sort by |
Showing 1-3 of 142 reviews
Jul 12, 2020
millrat0259
Top Reviewer
5 out of 5 stars review
Great battery for 40V HART tools
I got this HART 40-Volt 4.0Ah Battery Accessory, Lithium-Ion, On-Board Fuel Gauge to use with my HART 40V tools. Now I can use them longer by having two batteries charged up and ready to use while I am using my HART string trimmer, blower and chainsaw. Now I can know I can complete my job without running out of battery charge. I love thatthis batter is so powerful. It features the fad free lithium Ion technology and gives consistent power that lasts a long time and lets me complete what I am doing. And, the On Board Fuel Gauge lets me check the charge at a glance so I can know when it is time to switch batteries. I really love how durable this battery is and how it should last a very long time. And it is compatible with all of the HART 40V tools, so I do not have to have separate batteries for each tool, which saves me money and space, both of which are important to me. I feel better knowing I do not have to use gas with my tools. It is sold separately from any tool, and does not include a charger. I do recommend this battery.
Incentivized Review
Helpful?3SITQI5OWYZS969444706
Jul 31, 2025
Ken
Top Reviewer
5 out of 5 stars review
Verified Purchase
Yes for HART batteries…
If a battery on line looks like HART but doesn't have the Hart logo on it do not order it, others just don't fit the Hart products. Hart are good products from Walmart, dependable.
Helpful?3SITQI5OWYZS969444706
Jul 15, 2020
NanaB
5 out of 5 stars review
Powerhouse of a battery
Hart 4Ah 40V Lithium Ion Battery The Hart 4Ah 40V Lithium Ion Battery is a powerhouse. It holds a charge for a very long time. It is easy to recharge. You put it in a docking station and plug it in a 110 volt electrical outlet. The docking station comes with a Hart tool such as a mower, blower, trimmer, or edger. The battery is easy to install. It fits well onto multiple tools that are made by Hart. The battery is heavy enough that it helps distribute the weight of the tool it’s installed on. It is a well engineered battery. This battery powers tools that increase the joy of mowing, blowing, and trimming without the noise of gas machines or dragging around electrical cords. I have an edger by Hart and am looking forward to getting the Hart blower and Hart trimmer that this battery can attach to. It also fits a mower. The whole system that the Hart 4Ah 40V Lithium Ion Battery works on is well engineered by Hart. It even lets you know when the battery is running low with it's onboard gauge.
Incentivized Review
Helpful?3SITQI5OWYZS969444706
