Top 10 Best kobalt 40v battery in 2026

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• •【High-Performance 6.0Ah Capacity】Engineered with premium lithium-ion cells, this Kobalt 40V Battery 6.0Ah delivers 3X longer runtime than standard batteries. Perfect for demanding tasks with Kobalt 40V MAX tools, ensuring uninterrupted power for lawn mowers, chainsaws, and trimmers
• •【Smart LED Power Indicator】Featuring a 4-LED fuel gauge system, this 40 Volt Kobalt Battery provides real-time power status updates. Never get caught off-guard with precise battery level monitoring during intensive yard work
• •【Universal Compatibility】Designed as a direct replacement for Kobalt 40V tools (KB-540-06/KB440-06/KB240-06 series). This KOBALT battery 40 VOLT powers all 40V MAX cordless tools, including leaf blowers, hedge trimmers, and pole saws
• •【Advanced Safety Protection】Built with multiple safety mechanisms, this 40v lithium battery features overcharge/overheat protection and durable ABS+PC casing. Certified for reliable performance in various weather conditions
• •【24-Month Warranty】— Industry-Leading Protection Enjoy DOUBLE the coverage of most competitors (12 months). Save costs and shop worry for 2 full years! Questions about your battery? Click "Contact Seller" in "Your Orders" for a replacement or solution within 24 hours.

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• •🌟 [New & Improved for 5X Longer Runtime]: The upgraded replacement for Kobalt 40V lithium battery offers up to 5X the runtime of the original 2.0Ah 40V battery. Model: KB440-03 | Type: Lithium-ion | Voltage: 40V | Capacity: 6000mAh | Wattage: 240Wh
• •🔋 [Replacement for Kobalt 40V Battery]: Perfect replacement for Kobalt 40V battery KB440-03 KB640-03 KB240-06 KB240C-06 KB640-06, etc. Ensures a seamless fit with Ryobi 40V chargers KRC60-06 KRC40-06 KRC 840-03, etc. 100% compatible with 45+ Kobalt 40V tools, Makes Your Tools 5X Runing Time
• •⚡ [5X Longer Life & 1200+ Cycles]: The XAVITO battery upgrade features high-density cells with 5X the lifespan of standard cells, lasting over 1200 charge cycles with only 1% self-discharge, and is built for 5 years of reliable performance
• •🏅 [BMS Protection & Certified Safe]: The 40V battery with smart BMS and multi-protection, it safeguards against short circuits, overcharging, over-voltage, and overheating, ensuring reliable power and peak performance in any weather. All XAVITO battery is fully certified (𝐔𝐋, 𝐈𝐄𝐂, 𝐌𝐒𝐃𝐒, 𝐔𝐍𝟑𝟖.𝟑, 𝐅𝐂𝐂, 𝐂𝐁, 𝐏𝐒𝐄)
• •📞 [5-Year Protection & Support]: The XAVITO replacement for kobalt 40v max battery comes with a 𝟓-𝐲𝐞𝐚𝐫 𝐏𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧, with free return and replacement. If you have any questions, simply click "𝐀𝐬𝐤 𝐀 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧" on our storefront or "𝐂𝐨𝐧𝐭𝐚𝐜𝐭 𝐒𝐞𝐥𝐥𝐞𝐫" under "𝐘𝐨𝐮𝐫 𝐎𝐫𝐝𝐞𝐫." We're dedicated to providing you with a 5-star shopping experience!

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• •Replacement Battery for All Kobalt 40v Battery -- This 40 volt kobalt battery with a solid value in good design and engineering, kobalt battery 40v has 6AH capacity, wattage at 240Wh, support long-lasting performance and durability, 40v max kobalt battery great replace for all kobalt 40v batteries including KB440-03 KB2540C-06 KB640-03 KB240-06 KB640-06 KB245-06 ‎KRC40-06 KB440C-06 KRC60
• •Reliable Quality -- High quality battery cells integrated microchip protects the rechargeable battery replacement for kobalt batteries 40v and extends lifetime, kobalt battery leaf blower equipped with automatic overload cut-off, short-circuit and over-voltage protection, no memory effect, can be charged or discharged as needed without capacity reduction, the kobalt leaf blower battery easy meet your requirement
• •Widely Compatibility -- Kobalt 40 volt battery seamless fit for whole Kobalt 40-volt tools lineup including the Kobalt 40v chain saws, weed whacker, leaf blower, lawn mower(20 inch mower KM 2041B-06 KPM1040A-03, 16 inch mower KM-1640-06, please check your mower model before purchase), string trimmer, pole saw, hedge trimmer, etc... , prolonging tool run time, and 40v battery kobalt can be fast charged with all the original Kobalt 40V Chargers KRC60-06, KRC40-06 and KRC840-03
• •Visible Battery Power -- Replacement for kobalt 40 V lithium battery with smart 4 led fuel indicators to show the batterty charging status, and if in demand, press the button near the indicator LED to show how much power remains in the 40v kobalt battery replacement
• •What you get -- 1x kobalt 40v battery 6.0ah, replacement for kobalt 40v max battery with 30-days money back and One Year Exchange aftersales service. Any problem, please feel free to contact us. Please click the "Ask a question" on our storefront or in "YOUR ORDER" options click the "contact seller", we will give you the most satisfactory solution

Main highlights

• •[Battery specification] Voltage : 40V| Capacity : 6.2Ah | Wattage : 248Wh | 1 Pack | Type : Lithium-ion | battery replacement for Kobalt 40V Cordless Tool | Removable, Rechargeable & No Memory Effect.
• •[Perfect compatibility] Replacement for 40V cordless tool such as 40V string trimmer, leaf blower, hedge trimmer, chainsaw and lawn mower etc. Replacement Battery for KPM1040A-03, KM-1640-06,KM 4040-06,KM1940-07 KB440 and so on.
• •[Remaining battery indicator LED] The batteries built with 4-LED Fuel Gauge System allows immediate feedback on state of charge. Fast charge with original 40V battery charger KRC60-06 / KRC40-06 / KRC 840-03
• •[Product advantages] Use high quality lithium cells to produce this battery, no memory effect, can be charged or discharged as needed without capacity reduction.Over-charging, over-discharging, over-current and over-heating protections are programed in the battery, Battery case is made of ABS+PC materials, it’s sturdy and fire resistant with good heat dissipation.All this to promise safety use
• •[What You Get, Customer Service]: 1 pack battery, Manual. 30-day money back and 12-month limited warranty. CONTACT US: Please contact through "Your Orders" tab in Amazon account (allow 24hrs for reply), we will give you the most satisfactory solution.

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• •【Battery Specifications】 -Voltage:40 Volt | Capacity: 6000 mAh |Conditions: 100% Brand New | Type: Li-ion | 1Pack | Rechargeable
• •【Widely Compatibility】-Compatible with Kobalt 40V lawn mower ,snow blower ,saw and so on,Work with Kobalt 40Vchargers.Replacement for Kobalt Battery 88620 88675 L135 88502 66810 L324.
• •【Safe & Reliable】- Replace for 40Volt Kobalt Batteries Obtained FCC CE RoHs Certification, Integrated Smart Chip and Multiple Protection Systems Prevent Over-Charging, Over-Discharging, Over-Current and Over-Heating for Safe Usage.
• •【Upgrade Capacity】-Cordless Tool Battery Packs Upgraded 6000mAh High Capacity Battery has 20% More Run-Time than Standard Batteries. No Memory Effect, Can be Charged or Discharged as Needed Without Loss of Capacity.LED Indicator Lights that Allow Users to Monitor the Power Status.
• •【What You Get】-1 Pack 6.0 Ah Replace Battery for Kobalt 40V Battery;1 Year Manufacturer Warranty;Upgraded Your Power Tool Experience Now!

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• •✔【Powerful & 3X Longer Runtime】Arguments:40-Volt 6.0Ah Lithium-ion | Not just a replacement！Actual capacity and top A grade li-ion cells provides 3X longer runtime and stronger power than original Kobalt 40V battery. (You can get lot done with full charge.)✚ 1/2 Lightweight for better handling and less fatigue.
• •✔【Extensive Compatibility & Seamless Fit】100% Fits all Kobalt 40V Max Tools and Kobalt 40V chargers[Support fast charging] ✚ Replace for all Kobalt 40V Series Battery
• •✔【Upgraded in Longevity】Thanks to its 1000 times recharge cycle and 1% low self discharge rate, the TenHutt battery for Kobalt could easily works for up to 3 years without problem.| Doesn't allow the tool to slow down at the end of the charge.
• •✔【Excellent Performance】 This 40V 3rd-Lithium battery are Smaller and lighter than common replacement batteries, yet delivers longer runtime and fade-free power.
• •✔【Safety Assured】One of the few battery cell selection with UL cetified in the market of Kobalt MAX 40volt replacement battery, equipped with battery management system(BMS) that can effectively protect the battery from potential damage caused by short circuit, over-charge/discharge, over-voltage and over-heating.
• •✔【 What You Get ？】1* 6.0Ah Replacement Battery for Kobalt 40V Battery + 1* User Manual + Excellent Service: {Free refund or replacement for 1.5 year !!} & {24*7 hours prompt after-sales service.}

Main highlights

• •[Battery specification] Voltage : 40V| Capacity : 6.2Ah | Wattage : 248Wh | 2 Pack | Type : Lithium-ion | battery replacement for Kobalt 40V Cordless Tool | Removable, Rechargeable & No Memory Effect.
• •[Perfect compatibility] Replacement for 40V cordless tool such as 40V string trimmer, leaf blower, hedge trimmer, chainsaw and lawn mower etc. Replacement Battery for KPM1040A-03, KM-1640-06,KM 4040-06,KM1940-07 and so on.
• •[Remaining battery indicator LED] The batteries built with 4-LED Fuel Gauge System allows immediate feedback on state of charge. Fast charge with original 40V battery charger KRC60-06 / KRC40-06 / KRC 840-03
• •[Product advantages] Use high quality lithium cells to produce this battery, no memory effect, can be charged or discharged as needed without capacity reduction.Over-charging, over-discharging, over-current and over-heating protections are programed in the battery, Battery case is made of ABS+PC materials, it’s sturdy and fire resistant with good heat dissipation.All this to promise safety use
• •[What You Get, Customer Service]: 2 packs batteries, Manual. 30-day money back and 12-month limited warranty. CONTACT US: Please contact through "Your Orders" tab in Amazon account (allow 24hrs for reply), we will give you the most satisfactory solution.

Main highlights

• •[Battery specification] Voltage : 40V| Capacity : 6.0Ah | Wattage : 240Wh | 2 Packs | Type : Lithium-ion | Battery Replacement for Kobalt 40V Cordless Tool | Removable, Rechargeable & No Memory Effect.
• •[Perfect compatibility] Replacement for 40V cordless tool such as 40V string trimmer, leaf blower, hedge trimmer, chainsaw and lawn mower etc. Replacement Battery for KB-540-06 KB440-06‎ KB240-06 KB2540C-06 KB640-03
• •[Remaining battery indicator LED] The batteries built with 4-LED Fuel Gauge System allows immediate feedback on state of charge. Fast charge with original 40V battery charger KRC60-06,KRC40-06,KRC 840-03.
• •[Product advantages] Use high quality lithium cells to produce this battery, no memory effect, can be charged or discharged as needed without capacity reduction.Over-charging, over-discharging, over-current and over-heating protections are programed in the battery, Battery case is made of ABS+PC materials, it’s sturdy and fire resistant with good heat dissipation.All this to promise safety use
• •[What You Get, Customer Service]: 2 packs batteries, Manual. 30-day money back and 12-month limited warranty. CONTACT US: Please contact through "Your Orders" tab in Amazon account (allow 24hrs for reply), we will give you the most satisfactory solution.