The battery for Sony NW-E403 and similar models is a high-quality accessory specifically designed for the reliable power supply of vehicle navigation units. With a capacity of 1050 milliampere-hours (mAh), this lithium-ion battery provides long-lasting performance, ensuring efficient use while driving. Its compact dimensions of 4.95 cm in length, 3.58 cm in width, and 0.55 cm in height make it a practical solution that easily integrates into various devices. Weighing only 58.97 grams, the battery is lightweight and portable, facilitating transport and handling. The UN number 3480 indicates the safety standards adhered to during the manufacturing of this product. This battery is an ideal choice for anyone looking for a reliable and durable power source for their navigation devices.