Replacement Battery for Craftsman Nextec 12 Volt Lithium Ion Battery Pack Part No. Craftsman 320.11221 Additional Details ------------------------------ Product description: ?Cameron Sino Cameron Sino is a brand focusing on sell battery, we aim at supplying high-quality professional battery products. ?Fit Modelr: 11221, 9-11221, Nextec ?Compatible Models: 320.11221 ?Notice Before Purchase - Be carefully check the model number of your device and the part number of your original Battery to see if this Battery is compatible with your device. - A new battery will achieve its best performance after 2 or 3 complete cycles of charge discharge. - When you install it, be sure the connector has been properly connected to your device. - Do not use low quality third-party adapter charger to charge your device, that will shorten the battery's life. ?Contact us If you have any questions or any issues when using our product, please send us a message, we will reply you as soon as possible.