When your battery is not charged in time, or forgotten, the battery may become unbalanced with too low individual cell voltage as a result. The common charger, the battery can therefore no longer correct balance resulting in a low battery capacity / short radius of the bicycle. V-bike can balance most batteries manually when this is going on.
The battery is brought back to strength and the condition of the cells is checked. In 90% of cases V-bike can fix the battery in this case. Balancing the battery may take time to one week. A before and after test will be done to see if there really profit made in balancing the cells.
Only suitable for LI-ION batteries, supplied by V-bike.