The charger wasn't included. Battery works but as other commented real capacity is between 5-6 Ah. Otherwise all functional and fair for the price.
The battery don't have 10 Ah. It has around 5 Ah. I have 75 kg, my bicycle can travel with this battery 24-25 km with pedal assist and with average speed 27-30 km/h. Maximum speed was 42 km/h.