Additional Details ------------------------------ Product description: ?Cameron Sino As a professional digital battery manufacturer, Cameron Sino focuses on the stability, safety and compatibility of replacement batteries. Cameron Sino has multiple circuit protection (overcharge, short circuit, high temperature and surge protection) and high quality fire resistant construction. ?Fit Modelr DS-2300, DS-3300, DS-4000, DS-5000, DS-5000ID ?Compatible Model BR-402, BR-403 ?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 85 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.