Best Kobalt 40v Battery Replacement and Charger in 2025
Updated on July 2025
#1
Recommended
10% Off
Free Shipping
- Battery specifications: 40V voltage, 6.0Ah capacity, 240Wh wattage, lithium-ion type. Includes 2 removable and rechargeable packs with no memory effect.
- Compatible with various 40V cordless tools, including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers. Replacement for multiple Kobalt part numbers.
- Features a 4-LED fuel gauge for immediate charge status feedback. Fast charging capability with compatible Kobalt chargers.
- Constructed with high-quality lithium cells, this battery offers safety protections against over-charging, over-discharging, over-current, and overheating. The ABS+PC casing ensures durability and heat dissipation.
- Includes two battery packs and a manual, with a 30-day money-back guarantee and a 12-month warranty. Customer service available through the Amazon "Your Orders" tab.
Read More
- Battery specifications: 40V voltage, 6.0Ah capacity, 240Wh wattage, lithium-ion type. Includes 2 removable and rechargeable packs with no memory effect.
- Compatible with various 40V cordless tools, including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers. Replacement for multiple Kobalt part numbers.
- Features a 4-LED fuel gauge for immediate charge status feedback. Fast charging capability with compatible Kobalt chargers.
Read More
#2
Value for Money
Free Shipping
- Battery specs: 40V voltage, 2.8Ah capacity, 112Wh wattage, lithium-ion type, removable and rechargeable with no memory effect.
- Compatible with all Kobalt 40V cordless tools including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers.
- Constructed with high-quality lithium cells, the battery features protections against over-charging, over-discharging, over-current, and overheating. The sturdy ABS+PC casing ensures safety and effective heat dissipation.
- CE, FCC, ROHS, and MSDS certified for safety. Integrated intelligent chip provides multiple protections to enhance tool longevity.
- Includes 2 batteries, manual, 30-day money-back guarantee, and 12-month limited warranty. Customer support available through Amazon orders.
Read More
- Battery specs: 40V voltage, 2.8Ah capacity, 112Wh wattage, lithium-ion type, removable and rechargeable with no memory effect.
- Compatible with all Kobalt 40V cordless tools including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers.
Read More
#3
26% Off
Free Shipping
- High-performance Kobalt 40-volt Li-ion 4.0Ah battery ensures consistent power without memory effects after charging
- Offers twice the capacity of the 2.0-Ah version for longer operational time
- Compatible with the complete range of Kobalt 40-volt max tools
- Built-in fuel gauge allows for quick power level assessment
Read More
- High-performance Kobalt 40-volt Li-ion 4.0Ah battery ensures consistent power without memory effects after charging
- Offers twice the capacity of the 2.0-Ah version for longer operational time
- Compatible with the complete range of Kobalt 40-volt max tools
- Built-in fuel gauge allows for quick power level assessment
#4
7% Off
Free Shipping
- Integrated LED lights indicate battery charge status
- Compatible with all Kobalt 40-volt max Li-ion batteries
- Efficient charging minimizes downtime
- Specifically designed for 40-volt max Li-ion batteries
- Available in Black and Blue colors
Read More
- Integrated LED lights indicate battery charge status
- Compatible with all Kobalt 40-volt max Li-ion batteries
- Efficient charging minimizes downtime
- Specifically designed for 40-volt max Li-ion batteries
- Available in Black and Blue colors
#5
40% Off
Free Shipping
- Kobalt 40-Volt Lithium Ion battery charger
- Designed with a new top load format
- Compatible with Generation 2 cordless power equipment
- 2019 model offering improved features
- Efficient charging for Lithium Ion batteries
- Compact design suitable for storage
Read More
- Kobalt 40-Volt Lithium Ion battery charger
- Designed with a new top load format
- Compatible with Generation 2 cordless power equipment
- 2019 model offering improved features
- Efficient charging for Lithium Ion batteries
- Compact design suitable for storage
#6
13% Off
Free Shipping
- Stronger 6.0Ah 40-Volt battery offers up to 3X longer runtime for Kobalt tools, enhancing efficiency.
- Compatible with various Kobalt 40V cordless tools, including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers.
- Advanced cell protection technology ensures consistent power output and protects against overheating and overloading.
- Compact design reduces weight to 2.66 lbs while improving energy density for longer use and enhanced performance.
- 4-LED fuel gauge provides a quick view of remaining battery power and charge level.
- 18-month free return and replacement policy with 24/7 email support for any battery-related issues.
Read More
- Stronger 6.0Ah 40-Volt battery offers up to 3X longer runtime for Kobalt tools, enhancing efficiency.
- Compatible with various Kobalt 40V cordless tools, including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers.
- Advanced cell protection technology ensures consistent power output and protects against overheating and overloading.
Read More
#7
Free Shipping
- Compatible with Kobalt 40V tools, this upgraded battery boasts a capacity of 6Ah for longer usage.
- Equipped with a cooling system to enhance heat dissipation and extend battery life.
- Features an LED indicator for monitoring remaining power, preventing over-discharge and enabling quicker charging.
- Offers a 1000 cycle lifespan with a low self-discharge rate, ensuring reliability and safety with built-in protection against short circuits and overheating.
- Includes a 5-year money-back guarantee with dedicated customer support for inquiries or issues.
Read More
- Compatible with Kobalt 40V tools, this upgraded battery boasts a capacity of 6Ah for longer usage.
- Equipped with a cooling system to enhance heat dissipation and extend battery life.
- Features an LED indicator for monitoring remaining power, preventing over-discharge and enabling quicker charging.
Read More
#8
10% Off
Free Shipping
- Voltage: 40V, Capacity: 6.2Ah, Wattage: 248Wh, Type: Lithium-ion, designed for Kobalt 40V cordless tools, removable and rechargeable without memory effect.
- Compatible with various 40V cordless tools including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers. Replacement for models KPM1040A-03, KM-1640-06, KM4040-06, KM1940-07, KB440.
- Equipped with a 4-LED Fuel Gauge to provide real-time charge status. Compatible with KRC60-06, KRC40-06, and KRC840-03 chargers for fast recharging.
- Constructed with high-quality lithium cells, designed for safety with built-in protections against overcharging, discharging, current, and overheating. Durable ABS+PC materials offer fire resistance and heat dissipation.
- Includes 1 battery pack and a manual, along with a 30-day money-back guarantee and a 12-month limited warranty. Customer support available through Amazon account.
Read More
- Voltage: 40V, Capacity: 6.2Ah, Wattage: 248Wh, Type: Lithium-ion, designed for Kobalt 40V cordless tools, removable and rechargeable without memory effect.
- Compatible with various 40V cordless tools including string trimmers, leaf blowers, hedge trimmers, chainsaws, and lawn mowers. Replacement for models KPM1040A-03, KM-1640-06, KM4040-06, KM1940-07, KB440.
Read More
#9
15% Off
Free Shipping
- 40-Volt 6.0Ah lithium-ion battery offers 3X longer runtime and enhanced power compared to the original Kobalt 40V battery.
- Compatible with all Kobalt 40V Max tools and chargers, including support for fast charging.
- Designed for longevity with up to 1000 recharge cycles and a low self-discharge rate, functioning effectively for up to 3 years.
- Compact and lightweight design delivers longer runtime and consistent power without fade.
- Equipped with UL-certified battery cells and a Battery Management System (BMS) for safety against short circuits, overcharging, and overheating.
- Package includes one 6.0Ah replacement battery and a user manual, backed by a 1.5-year free refund or replacement policy and around-the-clock customer service.
Read More
- 40-Volt 6.0Ah lithium-ion battery offers 3X longer runtime and enhanced power compared to the original Kobalt 40V battery.
- Compatible with all Kobalt 40V Max tools and chargers, including support for fast charging.
- Designed for longevity with up to 1000 recharge cycles and a low self-discharge rate, functioning effectively for up to 3 years.
- Compact and lightweight design delivers longer runtime and consistent power without fade.
Read More
#10
Free Shipping
- Upgraded Kobalt 40V lithium battery with 5X longer runtime than the original 2.0Ah version. Model: KB440-03, 6000mAh capacity, 240Wh wattage.
- Compatible replacement for Kobalt 40V battery models KB440-03, KB640-03, and more. Works seamlessly with 45+ Kobalt 40V tools and various Ryobi chargers.
- High-density cells ensure the battery lasts over 1200 charge cycles, featuring a 5X longer lifespan and only 1% self-discharge rate.
- Equipped with smart BMS protection to prevent short circuits, overcharging, and overheating, ensuring consistent power performance.
- Includes a 5-year protection plan with options for free return and replacement, and dedicated support for customer inquiries.
Read More
- Upgraded Kobalt 40V lithium battery with 5X longer runtime than the original 2.0Ah version. Model: KB440-03, 6000mAh capacity, 240Wh wattage.
- Compatible replacement for Kobalt 40V battery models KB440-03, KB640-03, and more. Works seamlessly with 45+ Kobalt 40V tools and various Ryobi chargers.
- High-density cells ensure the battery lasts over 1200 charge cycles, featuring a 5X longer lifespan and only 1% self-discharge rate.
Read More
Black And Decker 40v Lithium Battery For Lst140 Trimmer
See All
Tools Compatible With Dewalt Batteries
See All
Craftsman Battery 19.2 Volt Replacement Lithium Ion
See All
