Sorry forgot about taking a picture of the batteries, I now use lifpo4 in a shoulder bag or backpack, the box on the back of the green bike houses the controller all the conections a punture repair kit and tools.
It has a Steel rigid frame a 10 speed 53/39 chain ring, direct drive motor on a 28" rear wheel, 48v controller powered by a 48v 12a ping , a Very light old fashion design with modern upgrades no extra power is needed to ride this bike, but if you what it its there in spades.
The wisper is an early model 905e (Knight rider 2006) this one has no mods, basic repairs and maintanance and is still 95% original even has the same tiers, been used almost every day for 3 years by my Daughter a teenager 6st never peddled whent everywhere at 18mph, (now has a car) the only problems were one puncture lost the keys and just rescently the charger stopped working.