This 48V 17.5Ah Hailong battery is a top - selling size with a wide range of applications. It features a robust Hailong case known for its strength and durability, and is powered by high - density Samsung 35E cells along with a high - end battery management system. It offers a 40A continuous discharge, much higher than our other 48 - Volt batteries, making it ideal for high - powered motors that run at full power for long periods. There's also a USB port, allowing you to charge your accessories while riding, though keep in mind it will reduce the power for riding. Specifications: 48V, 17.5AH, 840Wh, 13S5P cell configuration, 2 - year warranty, 367L 90W 111H dimensions, comes with 2 keys, works with Hailong 4 - pin connector, weighs 4.3KG, continuous discharge of 40A for larger motors, and has a Battery Management System (BMS).

Using the Hailong 48V 17.5Ah battery is easy. First, connect it to your device using the Hailong 4 - pin connector. When you're riding, you can use the USB port to charge your small accessories like your phone or a GPS device, but remember it will take some power away from your ride. For maintenance, keep the battery in a cool and dry place. Avoid over - discharging the battery. If you don't use it for a long time, make sure to charge it every few months. The battery comes with a 2 - year warranty, so if you have any issues during this time, contact our customer service.