This frame adopts dual-battery design, which offer more flexibility by allowing you to carry two batteries right on the frame. You can simply install the front battery kit without the need for soldering or cutting any wires. Please be aware this battery kit is only compatible with Wallke series ebike. What's in the Battery Kit box? 22Ah front battery 2 keys Dual battery module Battery connection terminal The Battery Kit does not include a charger. If you need a charger, please select the +3A charger option. ??If you only need a 3A charger for the H9 22Ah front battery kit, Get Here. Note:This model is available in multiple configurations. Product images are for reference only. All shipments are fulfilled with the latest updated version matching your selected setup.