Newly bought a Wuxi riding rhyme brand 60-volt electric car, found that the odometer is automatically cleared every time you stop, there is no place to adjust, may I ask what's going on ah!

This kind of electric car meter will be automatically cleared after power failure.

The battery is 12V/block collocation, more than 3, 4 blocks in series, that is, 36V, 48V, another 18V four blocks in series for 64V, 70V in principle is not. How many kilometers an electric car can run, the industry called range, it is not only related to the battery voltage, current, but also with the motor type, power rating, output efficiency, load, etc..

Based on the 64V20A battery, 500W electric motor, the range is approximately equal to = 20/(500W/64V/20A)*80%*30km/h=61.44km. That is to say, if your electric car is driven under normal conditions (good road conditions, temperature above 10 degrees and below 35 degrees, only carrying 1 person), the efficiency of the motor can be up to 80%, then it can last about 61 kilometers.

Different electric cars have different average riding currents, the battery's continuous discharge time is different, the electric car's range is different, because the motor in the rated power when the efficiency of the work is the highest, so, in the conditions of the fastest speed to maintain the electric car does not take into account the conditions of the other external factors of the uniform acceleration of the electric car, the electric car's riding mileage is the furthest. Here are a few formulas for calculating this.

Formula 1: V = P / (G × 0.09) (V: the fastest speed P: rated power G: total load weight)

Formula 2: I = P / U (P: rated power U: battery voltage I: current)

Formula 3: T = Q / I (Q: battery capacity I: riding current)

Formula 4: S = VT (S: miles) V: Vehicle speed T: Riding time)