Google+ Polaris Ebike Battery Technology: ARC Regen | Polaris eBikes

Automatic Battery Regeneration
The ARC Regen system is an energy recovery system that captures power  and returns it to the bike’s battery supply.  Although POLARIS electric bicycles are designed to empower your ride, there are times when you can power the system.  The system captures power during the braking process, or when your speeds exceed 19MPH, and returns that power to the battery supply.  The DuoDrive motor is triggered by a sensor in either the brake lever or onboard computer, and acts as a generator to create power for the battery.  The electric bike battery is activated during periods where the power generation will not negatively impact your ride experience, and can generate power levels of up to 100 Watts resulting in extended range.  The IC dashboard alerts you that you have entered an ARC Regen period on the display.  The battery supply meter will begin to flash, accompanied by the words REGEN.  When you see this flashing, you know that not only does your POLARIS ebike have the power to move you, but also has power generated by you.