A great purchase for anyone who rides a Whill Model Ci regularly, this spare Battery Charger will insure that you are always able to get to a full charge whenever and wherever. Whether you have your initial charger or you don't, having more ways to keep a full charge going throughout the day only makes life with a Model Ci easier. A perfect complement to the Spare Battery, a purchase of both allows users to go from one fully-charged battery to the next, eliminating downtime for the Model Ci due to charging almost entirely. The Spare Charger offers users the peace-of-mind that they will never have to wait on their Model Ci to charge again.