Energy Storage Extended Range Federal Grant Range 
Green Car Congress
OCTOBER 5, 2015
The Proterra TerraFlex Energy Systems provides customers with the ability to choose between 53 kWh to 321 kWh of energy storage, and the option to charge on-route or in-depot. The XR Extended Range product, using NMC Li-ion cells, allows longer distances between charge events.
Tony Karrer Delicious EVdriven
APRIL 22, 2009
However, because of the duty cycle used by the Postal Service, which generally amounts to only about 18-20 miles per day on a fixed route, these vehicles are being built without the range extender seen on the concept. The extended-range version will be focused on retail customers. Postal Service for mail delivery.
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