MaximalPower Power Tool Replacement Battery for DEWALT 14.4V DC9091, DW9091, DW9094, DE9038, DE9091 Amazon.com is the only authorized dealer selling MaximalPower brand products. Please make sure your item is ONLY sold and shipped by Amazon.com! All other marketplace vendors are selling counterfeit products that do not perform the same, and/or are not covered by our MaximalPower Warranty. Replaces the OEM battery part numbers: DEWALT # DC9091, DE9038, DE9091, DE9092, DE9094, DE9502, DW9091, DW9094 Battery Type: Ni-Cd Capacity: 14.4v 2000mAh (Will NOT affect battery compatibility) Integrated microchip prevents overcharging & lengthens battery life! 100% Compatible with original manufacturer equipment