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10 Best kobalt 40v replacement battery - March 2026

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Last Updated: 03-09-2026

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1

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BOTKK Premium 6.5Ah Replacement for Kobalt 40V Battery Compatible with Kobalt 40V Max Battery KB440-06 KB-540-06 ‎KB240-06 KB2540C-06 KB640-03

BOTKK Premium 6.5Ah Replacement for Kobalt 40V Battery Compatible with Kobalt 40V Max Battery KB440-06 KB-540-06 ‎KB240-06 KB2540C-06 KB640-03

BOTKK

9.8

9.8

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2

XAVITO Replacement for Kobalt 40V Battery 6.0Ah, New Upgraded 5X Longer Runtime, Compatible with Kobalt 40V Cordless Power Tool, for 40V Max Battery KB440-03 KB2540C-06 KB240-03 KRC60

XAVITO Replacement for Kobalt 40V Battery 6.0Ah, New Upgraded 5X Longer Runtime, Compatible with Kobalt 40V Cordless Power Tool, for 40V Max Battery KB440-03 KB2540C-06 KB240-03 KRC60

XAVITO

9.6

9.6

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3

bestBest value
for Kobalt 40V Battery Replacement, 40 Volt Max 4Ah Lithium-ion Bateria Compatible with with Kobalt Cordless Power Tool Battery KB640-06 KB540-06 KB440-06 KB340-06 KB240-06 (KB440-06 40V 4.0Ah-2P)

for Kobalt 40V Battery Replacement, 40 Volt Max 4Ah Lithium-ion Bateria Compatible with with Kobalt Cordless Power Tool Battery KB640-06 KB540-06 KB440-06 KB340-06 KB240-06 (KB440-06 40V 4.0Ah-2P)

SAPBJ

9.5

9.5

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4

Capowill 40V 3.0Ah Replacement Battery for Kobalt 40V KB2540C-06 KB440-06 KB440-03 KB640-03 KB240-06 KB240C-06 KB640-06 KB245-06 KB540-06 ‎Cordless Power Tool Battery

Capowill 40V 3.0Ah Replacement Battery for Kobalt 40V KB2540C-06 KB440-06 KB440-03 KB640-03 KB240-06 KB240C-06 KB640-06 KB245-06 KB540-06 ‎Cordless Power Tool Battery

Capowill

9.2

9.2

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5

2-Pack 6.0Ah Battery Replacement for Kobalt 40V Battery KB-540-06 KB440-06 KB2540C-06, Rechargeable Lithium Ion Pack Compatible with Kobalt 40 Volt Cordless Tools & Chargers

2-Pack 6.0Ah Battery Replacement for Kobalt 40V Battery KB-540-06 KB440-06 KB2540C-06, Rechargeable Lithium Ion Pack Compatible with Kobalt 40 Volt Cordless Tools & Chargers

FJP

9.1

9.1

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6

YXKC 2-Pack 6.0Ah Battery Replacement for Kobalt 40V Battery, Compatible with KB-540-06, KB440-06 Batteries & Cordless Power Tools

YXKC 2-Pack 6.0Ah Battery Replacement for Kobalt 40V Battery, Compatible with KB-540-06, KB440-06 Batteries & Cordless Power Tools

YXKC

8.8

8.8

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7

2 Pack 6.0Ah Lithium-ion Replacement for Kobalt 40V Battery Compatible with KPM1040A-03, KM-1640-06, KM 4040-06,Cordless Power Tool Battery

2 Pack 6.0Ah Lithium-ion Replacement for Kobalt 40V Battery Compatible with KPM1040A-03, KM-1640-06, KM 4040-06,Cordless Power Tool Battery

Bayhon

8.6

8.6

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8

BOTKK Upgraded 6.0Ah Lithium-ion Replacement for Kobalt 40V Battery, Compatible with Kobalt 40 Volt KPM1040A-03 KM-1640-06 KM 4040-06 Cordless Power Tool Batteries

BOTKK Upgraded 6.0Ah Lithium-ion Replacement for Kobalt 40V Battery, Compatible with Kobalt 40 Volt KPM1040A-03 KM-1640-06 KM 4040-06 Cordless Power Tool Batteries

BOTKK

8.4

8.4

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9

6.0Ah Replacement for Kobalt 40v Battery KB240-06 KB2540C-06 KB240-03 KB440-03 KB640-03 KB640-06 KB245-06 KRC40-06 KB440C-06 KB340C-06, Compatible with Kobalt 40 Volt Max Cordless Power Tools&Chargers

6.0Ah Replacement for Kobalt 40v Battery KB240-06 KB2540C-06 KB240-03 KB440-03 KB640-03 KB640-06 KB245-06 KRC40-06 KB440C-06 KB340C-06, Compatible with Kobalt 40 Volt Max Cordless Power Tools&Chargers

TenHutt

8.2

8.2

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10

40-Volt 4-Amps 4.0ah Rechargeable Lithium Ion (Li-Ion) Cordless Power Equipment Battery for Kobalt

40-Volt 4-Amps 4.0ah Rechargeable Lithium Ion (Li-Ion) Cordless Power Equipment Battery for Kobalt

Kobalts

8.1

8.1

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