You can mount the ROLF on the bottle-mount of your
bike, then just slide in a Lupine SmartCore battery. Rolf V1 makes it possible to attach or remove the Lupine SmartCore battery
within a second. No fastener straps needed.
You may need an additional extension cord to connect to the battery.
Simple Brilliance, December 17, 2013 By Joe Wright (Squamish, BC,Canada)
One could wonder why someone would take the time to write a review on a $10 item, the Rolf V1 is well worth it. It is well made design does the job flawlessly and holds Lupines largest Smart Core battery in place without any movement. Simple install and removal compliment it's design. I would recommend the Rolf V1 to any owner of a Smart Core type battery