2 PACK For Kobalt 40v MAX 4.0 Ah Extended Run Li-Ion Battery KB440-03 KB540-06
Replace for Kobalt 40V Lithium-ion Battery Kobalt 40V KB440-03 KB2540C-06 KB640-03 KB240-06 KB240C-06 KB640-06. 100% Compatible with Kobalt 40V Tools Model Compatible with all Kobalt 40V cordless power tool.