If you have a Specialized Turbo E-Bike and have opted for the Range Extender cell along side your e-bike' standard battery, this Turbo SL Y-Charger Cable lets you simultaneously charge your Specialized SL Battery and Range Extender. The custom Y-split cable simultaneously delivers power to both the main internal battery, and the SL Range Extender Battery, adding about 1.5 hours to fully charge both. The end base end connects directly to your standard charging cable and adds 1 meter of length (just over 3 feet) to make it more flexible for A/C access out to your bike.