aegiron replacement for kobalt 40v battery 6.0ah, compatible with all kobalt 40 volt lithium-lon battery power tools, replace for 40v max battery kb440-03 kb2540c-06 kb640-03 kb240-06 is up for auction in Tools & Home Improvement. The current bid is $25.75, 59% below the $62.99 MSRP, in New/Like New condition. Bid on this item at our Lavergne - Industrial Blvd Ste D location before the auction closes.